twitter.android: fix get_own_user_id for latest exports

once XML files increase past a certain size
(was about 220MB for me), the parser just throws
an error because the tree is too large (iirc for
security reasons)

could maybe look at using iterparse in the future
to parse it without loading the whole file, but this
seems to fix it fine for me

.ci/release

@@ -21,7 +21,7 @@ import shutil
 
 is_ci = os.environ.get('CI') is not None
 
-def main():
+def main() -> None:
     import argparse
     p = argparse.ArgumentParser()
     p.add_argument('--test', action='store_true', help='use test pypi')
@@ -29,7 +29,7 @@ def main():
 
     extra = []
     if args.test:
-        extra.extend(['--repository-url', 'https://test.pypi.org/legacy/'])
+        extra.extend(['--repository', 'testpypi'])
 
     root = Path(__file__).absolute().parent.parent
     os.chdir(root) # just in case
@@ -42,7 +42,7 @@ def main():
     if dist.exists():
         shutil.rmtree(dist)
 
-    check_call('python3 setup.py sdist bdist_wheel', shell=True)
+    check_call(['python3', '-m', 'build'])
 
     TP = 'TWINE_PASSWORD'
     password = os.environ.get(TP)

.ci/run

@@ -11,6 +11,8 @@ if ! command -v sudo; then
     }
 fi
 
+# --parallel-live to show outputs while it's running
+tox_cmd='run-parallel --parallel-live'
 if [ -n "${CI-}" ]; then
     # install OS specific stuff here
     case "$OSTYPE" in
@@ -20,7 +22,8 @@ if [ -n "${CI-}" ]; then
         ;;
     cygwin* | msys* | win*)
         # windows
-        :
+        # ugh. parallel stuff seems super flaky under windows, some random failures, "file used by other process" and crap like that
+        tox_cmd='run'
         ;;
     *)
         # must be linux?
@@ -37,5 +40,9 @@ if ! command -v python3 &> /dev/null; then
     PY_BIN="python"
 fi
 
-"$PY_BIN" -m pip install --user tox
-"$PY_BIN" -m tox
+
+# TODO hmm for some reason installing uv with pip and then running
+# "$PY_BIN" -m uv tool fails with missing setuptools error??
+# just uvx directly works, but it's not present in PATH...
+"$PY_BIN" -m pip install --user pipx
+"$PY_BIN" -m pipx run uv tool run --with=tox-uv tox $tox_cmd "$@"

.github/workflows/main.yml

@@ -5,24 +5,36 @@ on:
   push:
     branches: '*'
     tags: 'v[0-9]+.*' # only trigger on 'release' tags for PyPi
-  # Note that people who fork it need to go to "Actions" tab on their fork and click "I understand my workflows, go ahead and enable them".
+    # Ideally I would put this in the pypi job... but github syntax doesn't allow for regexes there :shrug:
   pull_request: # needed to trigger on others' PRs
   # Note that people who fork it need to go to "Actions" tab on their fork and click "I understand my workflows, go ahead and enable them".
   workflow_dispatch: # needed to trigger workflows manually
     # todo cron?
+    inputs:
+      debug_enabled:
+        type: boolean
+        description: 'Run the build with tmate debugging enabled (https://github.com/marketplace/actions/debugging-with-tmate)'
+        required: false
+        default: false
 
 
 jobs:
   build:
     strategy:
+      fail-fast: false
       matrix:
         platform: [ubuntu-latest, macos-latest,  windows-latest]
-        python-version: ['3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
         exclude: [
-            # windows runners are pretty scarce, so let's only run one of them..
-            {platform: windows-latest, python-version: '3.7' },
-            {platform: windows-latest, python-version: '3.9' },
+            # windows runners are pretty scarce, so let's only run lowest and highest python version
             {platform: windows-latest, python-version: '3.10'},
+            {platform: windows-latest, python-version: '3.11'},
+            {platform: windows-latest, python-version: '3.12'},
+
+            # same, macos is a bit too slow and ubuntu covers python quirks well
+            {platform: macos-latest  , python-version: '3.10' },
+            {platform: macos-latest  , python-version: '3.11' },
+            {platform: macos-latest  , python-version: '3.12' },
         ]
 
     runs-on: ${{ matrix.platform }}
@@ -34,29 +46,31 @@ jobs:
     # ugh https://github.com/actions/toolkit/blob/main/docs/commands.md#path-manipulation
     - run: echo "$HOME/.local/bin" >> $GITHUB_PATH
 
-    - uses: actions/setup-python@v3
+    - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
         fetch-depth: 0  # nicer to have all git history when debugging/for tests
 
-    # uncomment for SSH debugging
-    # - uses: mxschmitt/action-tmate@v3
+    - uses: mxschmitt/action-tmate@v3
+      if: ${{ github.event_name == 'workflow_dispatch' && inputs.debug_enabled }}
 
     # explicit bash command is necessary for Windows CI runner, otherwise it thinks it's cmd...
-    - run: bash scripts/ci/run
+    - run: bash .ci/run
 
     - if: matrix.platform == 'ubuntu-latest'  # no need to compute coverage for other platforms
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
+        include-hidden-files: true
         name: .coverage.mypy-misc_${{ matrix.platform }}_${{ matrix.python-version }}
         path: .coverage.mypy-misc/
     - if: matrix.platform == 'ubuntu-latest'  # no need to compute coverage for other platforms
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
+        include-hidden-files: true
         name: .coverage.mypy-core_${{ matrix.platform }}_${{ matrix.python-version }}
         path: .coverage.mypy-core/
 
@@ -68,11 +82,11 @@ jobs:
     # ugh https://github.com/actions/toolkit/blob/main/docs/commands.md#path-manipulation
     - run: echo "$HOME/.local/bin" >> $GITHUB_PATH
 
-    - uses: actions/setup-python@v3
+    - uses: actions/setup-python@v5
       with:
-        python-version: '3.8'
+        python-version: '3.10'
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
 
@@ -81,8 +95,7 @@ jobs:
       if: github.event_name != 'pull_request' && github.event.ref == 'refs/heads/master'
       env:
         TWINE_PASSWORD: ${{ secrets.TWINE_PASSWORD_TEST }}
-      run: pip3 install --user wheel twine && scripts/release --test
-      # TODO run pip install just to test?
+      run: pip3 install --user --upgrade build twine && .ci/release --test
 
     - name: 'release to pypi'
       # always deploy tags to release pypi
@@ -90,4 +103,4 @@ jobs:
       if: github.event_name != 'pull_request' && startsWith(github.event.ref, 'refs/tags')
       env:
         TWINE_PASSWORD: ${{ secrets.TWINE_PASSWORD }}
-      run: pip3 install --user wheel twine && scripts/release
+      run: pip3 install --user --upgrade build twine && .ci/release

.gitignore

@@ -12,6 +12,7 @@
 auto-save-list
 tramp
 .\#*
+*.gpx
 
 # Org-mode
 .org-id-locations
@@ -154,6 +155,9 @@ celerybeat-schedule
 .dmypy.json
 dmypy.json
 
+# linters
+.ruff_cache/
+
 # Pyre type checker
 .pyre/
 

CHANGELOG.md

@@ -17,10 +17,10 @@ General/my.core changes:
 - 746c3da0cadcba3b179688783186d8a0bd0999c5 core.pandas: allow specifying schema; add tests
 - 5313984d8fea2b6eef6726b7b346c1f4316acd01 add `tmp_config` context manager for test & adhoc patching
 - df9a7f7390aee6c69f1abf1c8d1fc7659ebb957c core.pandas: add check for 'error' column + add empty one by default
-- e81dddddf083ffd81aa7e2b715bd34f59949479c proprely resolve class properties in make_config + add test
+- e81dddddf083ffd81aa7e2b715bd34f59949479c properly resolve class properties in make_config + add test
 
 Modules:
-- some innitial work on filling **InfluxDB** with HPI data
+- some initial work on filling **InfluxDB** with HPI data
 
 - pinboard
   - 42399f6250d9901d93dcedcfe05f7857babcf834: **breaking backwards compatibility**, use pinbexport module directly

README.org

@@ -531,7 +531,7 @@ If you like the shell or just want to quickly convert/grab some information from
 #+begin_src bash
   $ hpi query my.coding.commits.commits --stream # stream JSON objects as they're read
     --order-type datetime  # find the 'datetime' attribute and order by that
-    --after '2020-01-01 00:00:00' --before '2020-12-31 23:59:59' # in 2020
+    --after '2020-01-01' --before '2021-01-01' # in 2020
     | jq '.committed_dt' -r  # extract the datetime
     # mangle the output a bit to group by month and graph it
     | cut -d'-' -f-2 | sort | uniq -c | awk '{print $2,$1}' | sort -n | termgraph
@@ -552,6 +552,8 @@ If you like the shell or just want to quickly convert/grab some information from
 2020-12: ▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ 383.00
 #+end_src
 
+See [[https://github.com/karlicoss/HPI/blob/master/doc/QUERY.md][query docs]]
+for more examples
 
 ** Querying Roam Research database
 :PROPERTIES:
@@ -721,10 +723,10 @@ If you want to write modules for personal use but don't want to merge them into
 
 Other HPI Repositories:
 
-- [[https://github.com/seanbreckenridge/HPI][seanbreckenridge/HPI]]
+- [[https://github.com/purarue/HPI][purarue/HPI]]
 - [[https://github.com/madelinecameron/hpi][madelinecameron/HPI]]
 
-If you want to create your own to create your own modules/override something here, you can use the [[https://github.com/seanbreckenridge/HPI-template][template]].
+If you want to create your own to create your own modules/override something here, you can use the [[https://github.com/purarue/HPI-template][template]].
 
 * Related links
 :PROPERTIES:

conftest.py

@@ -0,0 +1,47 @@
+# this is a hack to monkey patch pytest so it handles tests inside namespace packages without __init__.py properly
+# without it, pytest can't discover the package root for some reason
+# also see https://github.com/karlicoss/pytest_namespace_pkgs for more
+
+import os
+import pathlib
+from typing import Optional
+
+import _pytest.main
+import _pytest.pathlib
+
+# we consider all dirs in repo/ to be namespace packages
+root_dir = pathlib.Path(__file__).absolute().parent.resolve()  # / 'src'
+assert root_dir.exists(), root_dir
+
+# TODO assert it contains package name?? maybe get it via setuptools..
+
+namespace_pkg_dirs = [str(d) for d in root_dir.iterdir() if d.is_dir()]
+
+# resolve_package_path is called from _pytest.pathlib.import_path
+# takes a full abs path to the test file and needs to return the path to the 'root' package on the filesystem
+resolve_pkg_path_orig = _pytest.pathlib.resolve_package_path
+def resolve_package_path(path: pathlib.Path) -> Optional[pathlib.Path]:
+    result = path  # search from the test file upwards
+    for parent in result.parents:
+        if str(parent) in namespace_pkg_dirs:
+            return parent
+    if os.name == 'nt':
+        # ??? for some reason on windows it is trying to call this against conftest? but not on linux/osx
+        if path.name == 'conftest.py':
+            return resolve_pkg_path_orig(path)
+    raise RuntimeError("Couldn't determine path for ", path)
+_pytest.pathlib.resolve_package_path = resolve_package_path
+
+
+# without patching, the orig function returns just a package name for some reason
+# (I think it's used as a sort of fallback)
+# so we need to point it at the absolute path properly
+# not sure what are the consequences.. maybe it wouldn't be able to run against installed packages? not sure..
+search_pypath_orig = _pytest.main.search_pypath
+def search_pypath(module_name: str) -> str:
+    mpath = root_dir / module_name.replace('.', os.sep)
+    if not mpath.is_dir():
+        mpath = mpath.with_suffix('.py')
+        assert mpath.exists(), mpath  # just in case
+    return str(mpath)
+_pytest.main.search_pypath = search_pypath

demo.py

@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 from subprocess import check_call, DEVNULL
-from shutil import copy, copytree
+from shutil import copytree, ignore_patterns
 import os
 from os.path import abspath
 from sys import executable as python
@@ -9,12 +9,17 @@ from pathlib import Path
 my_repo = Path(__file__).absolute().parent
 
 
-def run():
+def run() -> None:
     # uses fixed paths; worth it for the sake of demonstration
     # assumes we're in /tmp/my_demo now
 
     # 1. clone git@github.com:karlicoss/my.git
-    copytree(my_repo, 'my_repo', symlinks=True)
+    copytree(
+        my_repo,
+        'my_repo',
+        symlinks=True,
+        ignore=ignore_patterns('.tox*'),  # tox dir might have broken symlinks while tests are running in parallel
+    )
 
     # 2. prepare repositories you'd be using. For this demo we only set up Hypothesis
     tox = 'TOX' in os.environ

doc/DENYLIST.md

@@ -0,0 +1,130 @@
+For code reference, see: [`my.core.denylist.py`](../my/core/denylist.py)
+
+A helper module for defining denylists for sources programmatically (in layman's terms, this lets you remove some particular output from a module you don't want)
+
+Lets you specify a class, an attribute to match on,
+and a JSON file containing a list of values to deny/filter out
+
+As an example, this will use the `my.ip` module, as filtering incorrect IPs was the original use case for this module:
+
+```python
+class IP(NamedTuple):
+    addr: str
+    dt: datetime
+```
+
+A possible denylist file would contain:
+
+```json
+[
+    {
+        "addr": "192.168.1.1",
+    },
+    {
+        "dt": "2020-06-02T03:12:00+00:00",
+    }
+]
+```
+
+Note that if the value being compared to is not a single (non-array/object) JSON primitive
+(str, int, float, bool, None), it will be converted to a string before comparison
+
+To use this in code:
+
+```python
+from my.ip.all import ips
+filtered = DenyList("~/data/ip_denylist.json").filter(ips())
+```
+
+To add items to the denylist, in python (in a one-off script):
+
+```python
+from my.ip.all import ips
+from my.core.denylist import DenyList
+
+d = DenyList("~/data/ip_denylist.json")
+
+for ip in ips():
+    # some custom code you define
+    if ip.addr == ...:
+        d.deny(key="ip", value=ip.ip)
+    d.write()
+```
+
+... or interactively, which requires [`fzf`](https://github.com/junegunn/fzf) and [`pyfzf-iter`](https://pypi.org/project/pyfzf-iter/) (`python3 -m pip install pyfzf-iter`) to be installed:
+
+```python
+from my.ip.all import ips
+from my.core.denylist import DenyList
+
+d = DenyList("~/data/ip_denylist.json")
+d.deny_cli(ips())  # automatically writes after each selection
+```
+
+That will open up an interactive `fzf` prompt, where you can select an item to add to the denylist
+
+This is meant for relatively simple filters, where you want to filter items out
+based on a single attribute of a namedtuple/dataclass. If you want to do something
+more complex, I would recommend overriding the `all.py` file for that source and
+writing your own filter function there.
+
+For more info on all.py:
+
+https://github.com/karlicoss/HPI/blob/master/doc/MODULE_DESIGN.org#allpy
+
+This would typically be used in an overridden `all.py` file, or in a one-off script
+which you may want to filter out some items from a source, progressively adding more
+items to the denylist as you go.
+
+A potential `my/ip/all.py` file might look like (Sidenote: `discord` module from [here](https://github.com/purarue/HPI)):
+
+```python
+from typing import Iterator
+
+from my.ip.common import IP
+from my.core.denylist import DenyList
+
+deny = DenyList("~/data/ip_denylist.json")
+
+# all possible data from the source
+def _ips() -> Iterator[IP]:
+    from my.ip import discord
+    # could add other imports here
+
+    yield from discord.ips()
+
+
+# filtered data
+def ips() -> Iterator[IP]:
+    yield from deny.filter(_ips())
+```
+
+To add items to the denylist, you could create a `__main__.py` in your namespace package (in this case, `my/ip/__main__.py`), with contents like:
+
+```python
+from my.ip import all
+
+if __name__ == "__main__":
+    all.deny.deny_cli(all.ips())
+```
+
+Which could then be called like: `python3 -m my.ip`
+
+Or, you could just run it from the command line:
+
+```
+python3 -c 'from my.ip import all; all.deny.deny_cli(all.ips())'
+```
+
+To edit the `all.py`, you could either:
+
+- install it as editable (`python3 -m pip install --user -e ./HPI`), and then edit the file directly
+- or, create a namespace package, which splits the package across multiple directories. For info on that see [`MODULE_DESIGN`](https://github.com/karlicoss/HPI/blob/master/doc/MODULE_DESIGN.org#namespace-packages), [`reorder_editable`](https://github.com/purarue/reorder_editable), and possibly the [`HPI-template`](https://github.com/purarue/HPI-template) to create your own HPI namespace package to create your own `all.py` file.
+
+For a real example of this see, [purarue/HPI-personal](https://github.com/purarue/HPI-personal/blob/master/my/ip/all.py)
+
+Sidenote: the reason why we want to specifically override
+the all.py and not just create a script that filters out the items you're
+not interested in is because we want to be able to import from `my.ip.all`
+or `my.location.all` from other modules and get the filtered results, without
+having to mix data filtering logic with parsing/loading/caching (the stuff HPI does)

doc/DESIGN.org

@@ -4,7 +4,7 @@ note: this doc is in progress
 
 - interoperable
 
-  # note: this link doesnt work in org, but does for the github preview
+  # note: this link doesn't work in org, but does for the github preview
   This is the main motivation and [[file:../README.org#why][why]] I created HPI in the first place.
 
   Ideally it should be possible to hook into anything you can imagine -- regardless the database/programming language/etc.

doc/MODULES.org

@@ -76,7 +76,7 @@ The config snippets below are meant to be modified accordingly and *pasted into
 
 You don't have to set up all modules at once, it's recommended to do it gradually, to get the feel of how HPI works.
 
-For an extensive/complex example, you can check out ~@seanbreckenridge~'s [[https://github.com/seanbreckenridge/dotfiles/blob/master/.config/my/my/config/__init__.py][config]]
+For an extensive/complex example, you can check out ~@purarue~'s [[https://github.com/purarue/dotfiles/blob/master/.config/my/my/config/__init__.py][config]]
 
 # Nested Configurations before the doc generation using the block below
 ** [[file:../my/reddit][my.reddit]]
@@ -96,7 +96,7 @@ For an extensive/complex example, you can check out ~@seanbreckenridge~'s [[http
 
         class pushshift:
             '''
-            Uses [[https://github.com/seanbreckenridge/pushshift_comment_export][pushshift]] to get access to old comments
+            Uses [[https://github.com/purarue/pushshift_comment_export][pushshift]] to get access to old comments
             '''
 
             # path[s]/glob to the exported JSON data
@@ -106,7 +106,7 @@ For an extensive/complex example, you can check out ~@seanbreckenridge~'s [[http
    
 ** [[file:../my/browser/][my.browser]]
 
-    Parses browser history using [[http://github.com/seanbreckenridge/browserexport][browserexport]]
+    Parses browser history using [[http://github.com/purarue/browserexport][browserexport]]
 
     #+begin_src python
     class browser:
@@ -132,7 +132,7 @@ For an extensive/complex example, you can check out ~@seanbreckenridge~'s [[http
 
    You might also be able to use [[file:../my/location/via_ip.py][my.location.via_ip]] which uses =my.ip.all= to
    provide geolocation data for an IPs (though no IPs are provided from any
- of the sources here). For an example of usage, see [[https://github.com/seanbreckenridge/HPI/tree/master/my/ip][here]]
+ of the sources here). For an example of usage, see [[https://github.com/purarue/HPI/tree/master/my/ip][here]]
 
     #+begin_src python
     class location:
@@ -256,9 +256,9 @@ for cls, p in modules:
 
 ** [[file:../my/google/takeout/parser.py][my.google.takeout.parser]]
 
-      Parses Google Takeout using [[https://github.com/seanbreckenridge/google_takeout_parser][google_takeout_parser]]
+      Parses Google Takeout using [[https://github.com/purarue/google_takeout_parser][google_takeout_parser]]
 
-      See [[https://github.com/seanbreckenridge/google_takeout_parser][google_takeout_parser]] for more information about how to export and organize your takeouts
+      See [[https://github.com/purarue/google_takeout_parser][google_takeout_parser]] for more information about how to export and organize your takeouts
 
       If the =DISABLE_TAKEOUT_CACHE= environment variable is set, this won't
       cache individual exports in =~/.cache/google_takeout_parser=

doc/MODULE_DESIGN.org

@@ -2,6 +2,19 @@ Some thoughts on modules, how to structure them, and adding your own/extending H
 
 This is slightly more advanced, and would be useful if you're trying to extend HPI by developing your own modules, or contributing back to HPI
 
+* TOC
+:PROPERTIES:
+:TOC:      :include all :depth 1 :force (nothing) :ignore (this) :local (nothing)
+:END:
+:CONTENTS:
+- [[#allpy][all.py]]
+- [[#module-count][module count]]
+- [[#single-file-modules][single file modules]]
+- [[#adding-new-modules][Adding new modules]]
+- [[#an-extendable-module-structure][An Extendable module structure]]
+- [[#logging-guidelines][Logging guidelines]]
+:END:
+
 * all.py
 
 Some modules have lots of different sources for data. For example, ~my.location~ (location data) has lots of possible sources -- from ~my.google.takeout.parser~, using the ~gpslogger~ android app, or through geo locating ~my.ip~ addresses. For a module with multiple possible sources, its common to split it into files like:
@@ -54,7 +67,7 @@ If you want to disable a source, you have a few options.
 
 ... that suppresses the warning message and lets you use ~my.location.all~ without having to change any lines of code
 
-Another benefit is that all the custom sources/data is localized to the ~all.py~ file, so a user can override the ~all.py~ (see the sections below on ~namespace packages~) file in their own HPI repository, adding additional sources without having to maintain a fork and patching in changes as things eventually change. For a 'real world' example of that, see [[https://github.com/seanbreckenridge/HPI#partially-in-usewith-overrides][seanbreckenridge]]s location and ip modules.
+Another benefit is that all the custom sources/data is localized to the ~all.py~ file, so a user can override the ~all.py~ (see the sections below on ~namespace packages~) file in their own HPI repository, adding additional sources without having to maintain a fork and patching in changes as things eventually change. For a 'real world' example of that, see [[https://github.com/purarue/HPI#partially-in-usewith-overrides][purarue]]s location and ip modules.
 
 This is of course not required for personal or single file modules, its just the pattern that seems to have the least amount of friction for the user, while being extendable, and without using a bulky plugin system to let users add additional sources.
 
@@ -113,7 +126,7 @@ Not all HPI Modules are currently at that level of complexity -- some are simple
 
 A related concern is how to structure namespace packages to allow users to easily extend them, and how this conflicts with single file modules (Keep reading below for more information on namespace packages/extension) If a module is converted from a single file module to a namespace with multiple files, it seems this is a breaking change, see [[https://github.com/karlicoss/HPI/issues/89][#89]] for an example of this. The current workaround is to leave it a regular python package with an =__init__.py= for some amount of time and send a deprecation warning, and then eventually remove the =__init__.py= file to convert it into a namespace package. For an example, see the [[https://github.com/karlicoss/HPI/blob/8422c6e420f5e274bd1da91710663be6429c666c/my/reddit/__init__.py][reddit init file]].
 
-Its quite a pain to have to convert a file from a single file module to a namespace module, so if theres *any* possibility that you might convert it to a namespace package, might as well just start it off as one, to avoid the pain down the road. As an example, say you were creating something to parse ~zsh~ history. Instead of creating ~my/zsh.py~, it would be better to create ~my/zsh/parser.py~. That lets users override the file using editable/namespace packages, and it also means in the future its much more trivial to extend it to something like:
+Its quite a pain to have to convert a file from a single file module to a namespace module, so if there's *any* possibility that you might convert it to a namespace package, might as well just start it off as one, to avoid the pain down the road. As an example, say you were creating something to parse ~zsh~ history. Instead of creating ~my/zsh.py~, it would be better to create ~my/zsh/parser.py~. That lets users override the file using editable/namespace packages, and it also means in the future its much more trivial to extend it to something like:
 
   #+begin_src
   my/zsh
@@ -161,7 +174,7 @@ There's no requirement to follow this entire structure when you start off, the e
 
 Note: this section covers some of the complexities and benefits with this being a namespace package and/or editable install, so it assumes some familiarity with python/imports
 
-HPI is installed as a namespace package, which allows an additional way to add your own modules. For the details on namespace packges, see [[https://www.python.org/dev/peps/pep-0420/][PEP420]], or the  [[https://packaging.python.org/guides/packaging-namespace-packages][packaging docs for a summary]], but for our use case, a sufficient description might be: Namespace packages let you split a package across multiple directories on disk.
+HPI is installed as a namespace package, which allows an additional way to add your own modules. For the details on namespace packages, see [[https://www.python.org/dev/peps/pep-0420/][PEP420]], or the  [[https://packaging.python.org/guides/packaging-namespace-packages][packaging docs for a summary]], but for our use case, a sufficient description might be: Namespace packages let you split a package across multiple directories on disk.
 
 Without adding a bulky/boilerplate-y plugin framework to HPI, as that increases the barrier to entry, [[https://packaging.python.org/guides/creating-and-discovering-plugins/#using-namespace-packages][namespace packages offers an alternative]] with little downsides.
 
@@ -195,13 +208,13 @@ Where ~lastfm.py~ is your version of ~my.lastfm~, which you've copied from this
 
 Then, running ~python3 -m pip install -e .~ in that directory would install that as part of the namespace package, and assuming (see below for possible issues) this appears on ~sys.path~ before the upstream repository, your ~lastfm.py~ file overrides the upstream. Adding more files, like ~my.some_new_module~ into that directory immediately updates the global ~my~ package -- allowing you to quickly add new modules without having to re-install.
 
-If you install both directories as editable packages (which has the benefit of any changes you making in either repository immediately updating the globally installed ~my~ package), there are some concerns with which editable install appears on your ~sys.path~ first. If you wanted your modules to override the upstream modules, yours would have to appear on the ~sys.path~ first (this is the same reason that =custom_lastfm_overlay= must be at the front of your ~PYTHONPATH~). For more details and examples on dealing with editable namespace packages in the context of HPI, see the [[https://github.com/seanbreckenridge/reorder_editable][reorder_editable]] repository.
+If you install both directories as editable packages (which has the benefit of any changes you making in either repository immediately updating the globally installed ~my~ package), there are some concerns with which editable install appears on your ~sys.path~ first. If you wanted your modules to override the upstream modules, yours would have to appear on the ~sys.path~ first (this is the same reason that =custom_lastfm_overlay= must be at the front of your ~PYTHONPATH~). For more details and examples on dealing with editable namespace packages in the context of HPI, see the [[https://github.com/purarue/reorder_editable][reorder_editable]] repository.
 
 There is no limit to how many directories you could install into a single namespace package, which could be a possible way for people to install additional HPI modules, without worrying about the module count here becoming too large to manage.
 
-There are some other users [[https://github.com/hpi/hpi][who have begun publishing their own modules]] as namespace packages, which you could potentially install and use, in addition to this repository, if any of those interest you. If you want to create your own you can use the [[https://github.com/seanbreckenridge/HPI-template][template]] to get started.
+There are some other users [[https://github.com/hpi/hpi][who have begun publishing their own modules]] as namespace packages, which you could potentially install and use, in addition to this repository, if any of those interest you. If you want to create your own you can use the [[https://github.com/purarue/HPI-template][template]] to get started.
 
-Though, enabling this many modules may make ~hpi doctor~ look pretty busy. You can explicitly choose to enable/disable modules with a list of modules/regexes in your [[https://github.com/karlicoss/HPI/blob/f559e7cb899107538e6c6bbcf7576780604697ef/my/core/core_config.py#L24-L55][core config]], see [[https://github.com/seanbreckenridge/dotfiles/blob/a1a77c581de31bd55a6af3d11b8af588614a207e/.config/my/my/config/__init__.py#L42-L72][here]] for an example.
+Though, enabling this many modules may make ~hpi doctor~ look pretty busy. You can explicitly choose to enable/disable modules with a list of modules/regexes in your [[https://github.com/karlicoss/HPI/blob/f559e7cb899107538e6c6bbcf7576780604697ef/my/core/core_config.py#L24-L55][core config]], see [[https://github.com/purarue/dotfiles/blob/a1a77c581de31bd55a6af3d11b8af588614a207e/.config/my/my/config/__init__.py#L42-L72][here]] for an example.
 
 You may use the other modules or [[https://github.com/karlicoss/hpi-personal-overlay][my overlay]] as reference, but python packaging is already a complicated issue, before adding complexities like namespace packages and editable installs on top of it... If you're having trouble extending HPI in this fashion, you can open an issue here, preferably with a link to your code/repository and/or ~setup.py~ you're trying to use.
 
@@ -226,11 +239,93 @@ The main goals are:
  - doesn't require you to maintain a fork of this repository, though you can maintain a separate HPI repository (so no patching/merge conflicts)
  - allows you to easily add/remove sources to the ~all.py~ module, either by:
     - overriding an ~all.py~ in your own repository
-    - just commenting out the source/adding 2 lines to import and ~yield
-      from~ your new source
+    - just commenting out the source/adding 2 lines to import and ~yield from~ your new source
     - doing nothing! (~import_source~ will catch the error and just warn you
       and continue to work without changing any code)
 
 It could be argued that namespace packages and editable installs are a bit complex for a new user to get the hang of, and this is true. But fortunately ~import_source~ means any user just using HPI only needs to follow the instructions when a warning is printed, or peruse the docs here a bit -- there's no need to clone or create your own override to just use the ~all.py~ file.
 
 There's no requirement to use this for individual modules, it just seems to be the best solution we've arrived at so far
+
+* Logging guidelines
+HPI doesn't enforce any specific logging mechanism, you're free to use whatever you prefer in your modules.
+
+However there are some general guidelines for developing modules that can make them more pleasant to use.
+
+- each module should have its unique logger, the easiest way to ensure that is simply use module's ~__name__~ attribute as the logger name
+
+  In addition, this ensures the logger hierarchy reflect the package hierarchy.
+  For instance, if you initialize the logger for =my.module= with specific settings, the logger for =my.module.helper= would inherit these settings. See more on that [[ https://docs.python.org/3/library/logging.html?highlight=logging#logger-objects][in python docs]].
+
+  As a bonus, if you use the module ~__name__~, this logger will be automatically be picked up and used by ~cachew~.
+
+- often modules are processing multiple files, extracting data from each one ([[https://beepb00p.xyz/exports.html#types][incremental/synthetic exports]])
+
+  It's nice to log each file name you're processing as =logger.info= so the user of module gets a sense of progress.
+  If possible, add the index of file you're processing and the total count.
+
+  #+begin_src python
+  def process_all_data():
+      paths = inputs()
+      total = len(paths)
+      width = len(str(total))
+      for idx, path in enumerate(paths):
+          # :>{width} to align the logs vertically
+          logger.info(f'processing [{idx:>{width}}/{total:>{width}}] {path}')
+          yield from process_path(path)
+  #+end_src
+
+  If there is a lot of logging happening related to a specific path, instead of adding path to each logging message manually, consider using [[https://docs.python.org/3/library/logging.html?highlight=loggeradapter#logging.LoggerAdapter][LoggerAdapter]].
+
+- log exceptions, but sparingly
+
+  Generally it's a good practice to call ~logging.exception~ from the ~except~ clause, so it's immediately visible where the errors are happening.
+
+  However, in HPI, instead of crashing on exceptions we often behave defensively and ~yield~ them instead (see [[https://beepb00p.xyz/mypy-error-handling.html][mypy assisted error handling]]).
+
+  In this case logging every time may become a bit spammy, so use exception logging sparingly in this case.
+  Typically it's best to rely on the downstream data consumer to handle the exceptions properly.
+
+- instead of =logging.getLogger=, it's best to use =my.core.make_logger=
+
+  #+begin_src python
+      from my.core import make_logger
+
+      logger = make_logger(__name__)
+
+      # or to set a custom level
+      logger = make_logger(__name__, level='warning')
+  #+end_src
+
+  This sets up some nicer defaults over standard =logging= module:
+
+  - colored logs (via =colorlog= library)
+  - =INFO= as the initial logging level (instead of default =ERROR=)
+  - logging full exception trace when even when logging outside of the exception handler
+
+    This is particularly useful for [[https://beepb00p.xyz/mypy-error-handling.html][mypy assisted error handling]].
+
+    By default, =logging= only logs the exception message (without the trace) in this case, which makes errors harder to debug.
+  - control logging level from the shell via ~LOGGING_LEVEL_*~ env variable
+
+    This can be useful to suppress logging output if it's too spammy, or showing more output for debugging.
+
+    E.g. ~LOGGING_LEVEL_my_instagram_gdpr=DEBUG hpi query my.instagram.gdpr.messages~
+
+  - experimental: passing env variable ~LOGGING_COLLAPSE=<loglevel>~ will "collapse" logging with the same level
+
+    Instead of printing new logging line each time, it will 'redraw' the last logged line with a new logging message.
+
+    This can be convenient if there are too many logs, you just need logging to get a sense of progress.
+
+  - experimental: passing env variable ~ENLIGHTEN_ENABLE=yes~ will display TUI progress bars in some cases
+
+    See [[https://github.com/Rockhopper-Technologies/enlighten#readme][https://github.com/Rockhopper-Technologies/enlighten#readme]]
+
+    This can be convenient for showing the progress of parallel processing of different files from HPI:
+
+    #+BEGIN_EXAMPLE
+      ghexport.dal[111]  29%|████████████████████                          |  29/100 [00:03<00:07, 10.03 files/s]
+      rexport.dal[comments]  17%|████████                                  | 115/682 [00:03<00:14, 39.15 files/s]
+      my.instagram.android   0%|▎                                          |    3/2631 [00:02<34:50, 1.26 files/s]
+    #+END_EXAMPLE

doc/OVERLAYS.org

@@ -0,0 +1,322 @@
+NOTE this kinda overlaps with [[file:MODULE_DESIGN.org][the module design doc]], should be unified in the future.
+
+Relevant discussion about overlays: https://github.com/karlicoss/HPI/issues/102
+
+# This is describing TODO
+# TODO goals
+# - overrides
+# - proper mypy support
+# - TODO reusing parent modules?
+
+# You can see them TODO in overlays dir
+
+Consider a toy package/module structure with minimal code, without any actual data parsing, just for demonstration purposes.
+
+- =main= package structure
+  # TODO do links
+
+  - =my/twitter/gdpr.py=
+    Extracts Twitter data from GDPR archive.
+  - =my/twitter/all.py=
+    Merges twitter data from multiple sources (only =gdpr= in this case), so data consumers are agnostic of specific data sources used.
+    This will be overridden by =overlay=.
+  - =my/twitter/common.py=
+    Contains helper function to merge data, so they can be reused by overlay's =all.py=.
+  - =my/reddit.py=
+    Extracts Reddit data -- this won't be overridden by the overlay, we just keep it for demonstration purposes.
+
+- =overlay= package structure
+
+  - =my/twitter/talon.py=
+    Extracts Twitter data from Talon android app.
+  - =my/twitter/all.py=
+    Override for =all.py= from =main= package -- it merges together data from =gpdr= and =talon= modules.
+
+# TODO mention resolution? reorder_editable
+
+* Installing (editable install)
+
+NOTE: this was tested with =python 3.10= and =pip 23.3.2=.
+
+To install, we run:
+
+: pip3 install --user -e overlay/
+: pip3 install --user -e main/
+
+# TODO mention non-editable installs (this bit will still work with non-editable install)
+
+As a result, we get:
+
+: pip3 list | grep hpi
+: hpi-main           0.0.0       /project/main/src
+: hpi-overlay        0.0.0       /project/overlay/src
+
+: cat ~/.local/lib/python3.10/site-packages/easy-install.pth
+: /project/overlay/src
+: /project/main/src
+
+(the order above is important, so =overlay= takes precedence over =main= TODO link)
+
+Verify the setup:
+
+: $ python3 -c 'import my; print(my.__path__)'
+: _NamespacePath(['/project/overlay/src/my', '/project/main/src/my'])
+
+This basically means that modules will be searched in both paths, with overlay taking precedence.
+
+** Installing with =--use-pep517=
+
+See here for discussion https://github.com/purarue/reorder_editable/issues/2, but TLDR it should work similarly.
+
+* Testing runtime behaviour (editable install)
+
+: $ python3 -c 'import my.reddit as R; print(R.upvotes())'
+: [main] my.reddit hello
+: ['reddit upvote1', 'reddit upvote2']
+
+Just as expected here, =my.reddit= is imported from the =main= package, since it doesn't exist in =overlay=.
+
+Let's theck twitter now:
+
+: $ python3 -c 'import my.twitter.all as T; print(T.tweets())'
+: [overlay] my.twitter.all hello
+: [main] my.twitter.common hello
+: [main] my.twitter.gdpr hello
+: [overlay] my.twitter.talon hello
+: ['gdpr tweet 1', 'gdpr tweet 2', 'talon tweet 1', 'talon tweet 2']
+
+As expected, =my.twitter.all= was imported from the =overlay=.
+As you can see it's merged data from =gdpr= (from =main= package) and =talon= (from =overlay= package).
+
+So far so good, let's see how it works with mypy.
+
+* Mypy support (editable install)
+
+To check that mypy works as expected I injected some statements in modules that have no impact on runtime,
+but should trigger mypy, like this =trigger_mypy_error: str = 123=:
+
+Let's run it:
+
+: $ mypy --namespace-packages --strict -p my
+: overlay/src/my/twitter/talon.py:9: error: Incompatible types in assignment (expression has type "int", variable has type "str")
+: [assignment]
+:     trigger_mypy_error: str = 123
+:                               ^
+: Found 1 error in 1 file (checked 4 source files)
+
+Hmm, this did find the statement in the =overlay=, but missed everything from =main= (e.g. =reddit.py= and =gdpr.py= should have also triggered the check).
+
+First, let's check which sources mypy is processing:
+
+: $ mypy --namespace-packages --strict -p my -v 2>&1 | grep BuildSource
+: LOG:  Found source:           BuildSource(path='/project/overlay/src/my', module='my', has_text=False, base_dir=None)
+: LOG:  Found source:           BuildSource(path='/project/overlay/src/my/twitter', module='my.twitter', has_text=False, base_dir=None)
+: LOG:  Found source:           BuildSource(path='/project/overlay/src/my/twitter/all.py', module='my.twitter.all', has_text=False, base_dir=None)
+: LOG:  Found source:           BuildSource(path='/project/overlay/src/my/twitter/talon.py', module='my.twitter.talon', has_text=False, base_dir=None)
+
+So seems like mypy is not processing anything from =main= package at all?
+
+At this point I cloned mypy, put a breakpoint, and found out this is the culprit: https://github.com/python/mypy/blob/1dd8e7fe654991b01bd80ef7f1f675d9e3910c3a/mypy/modulefinder.py#L288
+
+This basically returns the first path where it finds =my= package, which happens to be the overlay in this case.
+So everything else is ignored?
+
+It even seems to have a test for a similar usecase, which is quite sad.
+https://github.com/python/mypy/blob/1dd8e7fe654991b01bd80ef7f1f675d9e3910c3a/mypy/test/testmodulefinder.py#L64-L71
+
+For now, I opened an issue in mypy repository https://github.com/python/mypy/issues/16683
+
+But ok, maybe mypy treats =main= as an external package somehow but still type checks it properly?
+Let's see what's going on with imports:
+
+: $ mypy --namespace-packages --strict -p my --follow-imports=error
+: overlay/src/my/twitter/talon.py:9: error: Incompatible types in assignment (expression has type "int", variable has type "str")
+: [assignment]
+:     trigger_mypy_error: str = 123
+:                               ^
+: overlay/src/my/twitter/all.py:3: error: Import of "my.twitter.common" ignored  [misc]
+:     from .common import merge
+:     ^
+: overlay/src/my/twitter/all.py:6: error: Import of "my.twitter.gdpr" ignored  [misc]
+:         from . import gdpr
+:     ^
+: overlay/src/my/twitter/all.py:6: note: (Using --follow-imports=error, module not passed on command line)
+: overlay/src/my/twitter/all.py: note: In function "tweets":
+: overlay/src/my/twitter/all.py:8: error: Returning Any from function declared to return "List[str]"  [no-any-return]
+:         return merge(gdpr, talon)
+:         ^
+: Found 4 errors in 2 files (checked 4 source files)
+
+Nope -- looks like it's completely unawareof =main=, and what's worst, by default (without tweaking =--follow-imports=), these errors would be suppressed.
+
+What if we check =my.twitter= directly?
+
+: $ mypy --namespace-packages --strict -p my.twitter  --follow-imports=error
+: overlay/src/my/twitter/talon.py:9: error: Incompatible types in assignment (expression has type "int", variable has type "str")
+: [assignment]
+:     trigger_mypy_error: str = 123
+:                               ^~~
+: overlay/src/my/twitter: error: Ancestor package "my" ignored  [misc]
+: overlay/src/my/twitter: note: (Using --follow-imports=error, submodule passed on command line)
+: overlay/src/my/twitter/all.py:3: error: Import of "my.twitter.common" ignored  [misc]
+:     from .common import merge
+:     ^
+: overlay/src/my/twitter/all.py:3: note: (Using --follow-imports=error, module not passed on command line)
+: overlay/src/my/twitter/all.py:6: error: Import of "my.twitter.gdpr" ignored  [misc]
+:         from . import gdpr
+:     ^
+: overlay/src/my/twitter/all.py: note: In function "tweets":
+: overlay/src/my/twitter/all.py:8: error: Returning Any from function declared to return "list[str]"  [no-any-return]
+:         return merge(gdpr, talon)
+:         ^~~~~~~~~~~~~~~~~~~~~~~~~
+: Found 5 errors in 3 files (checked 3 source files)
+
+Now we're also getting =error: Ancestor package "my" ignored  [misc]= .. not ideal.
+
+* What if we don't install at all?
+Instead of editable install let's try running mypy directly over source files
+
+First let's only check =main= package:
+
+: $ MYPYPATH=main/src mypy --namespace-packages --strict -p my
+: main/src/my/twitter/gdpr.py:9: error: Incompatible types in assignment (expression has type "int", variable has type "str")  [assignment]
+:     trigger_mypy_error: str = 123
+:                               ^~~
+: main/src/my/reddit.py:11: error: Incompatible types in assignment (expression has type "int", variable has type "str")  [assignment]
+:     trigger_mypy_error: str = 123
+:                               ^~~
+: Found 2 errors in 2 files (checked 6 source files)
+
+As expected, it found both errors.
+
+Now with overlay as well:
+
+: $ MYPYPATH=overlay/src:main/src mypy --namespace-packages --strict -p my
+: overlay/src/my/twitter/all.py:6: note: In module imported here:
+: main/src/my/twitter/gdpr.py:9: error: Incompatible types in assignment (expression has type "int", variable has type "str")  [assignment]
+:     trigger_mypy_error: str = 123
+:                               ^~~
+: overlay/src/my/twitter/talon.py:9: error: Incompatible types in assignment (expression has type "int", variable has type "str")
+: [assignment]
+:     trigger_mypy_error: str = 123
+:                               ^~~
+: Found 2 errors in 2 files (checked 4 source files)
+
+Interesting enough, this is slightly better than the editable install (it detected error in =gdpr.py= as well).
+But still no =reddit.py= error.
+
+TODO possibly worth submitting to mypy issue tracker as well...
+
+Overall it seems that properly type checking HPI setup as a whole is kinda problematic, especially if the modules actually override/extend base modules.
+
+* Modifying (monkey patching) original module in the overlay
+Let's say we want to modify/monkey patch =my.twitter.talon= module from =main=, for example, convert "gdpr" to uppercase, i.e. =tweet.replace('gdpr', 'GDPR')=.
+
+# TODO see overlay2/
+
+I think our options are:
+
+- symlink to the 'parent' packages, e.g. =main= in the case
+
+  Alternatively, somehow install =main= under a different name/alias (managed by pip).
+
+  This is discussed here: https://github.com/karlicoss/HPI/issues/102
+
+  The main upside is that it's relatively simple and (sort of works with mypy).
+
+  There are a few big downsides:
+  - creates a parallel package hierarchy (to the one maintained by pip), symlinks will need to be carefully managed manually
+
+    This may not be such a huge deal if you don't have too many overlays.
+    However this results in problems if you're trying to switch between two different HPI checkouts (e.g. stable and development). If you have symlinks into "stable" from the overlay then stable modules will sometimes be picked up when you're expecting "development" package.
+
+  - symlinks pointing outside of the source tree might cause pip install to go into infinite loop
+
+  - it modifies the package name
+
+    This may potentially result in some confusing behaviours.
+
+    One thing I noticed for example is that cachew caches might get duplicated.
+
+  - it might not work in all cases or might result in recursive imports
+
+- do not shadow the original module
+
+  Basically instead of shadowing via namespace package mechanism and creating identically named module,
+  create some sort of hook that would patch the original =my.twitter.talon= module from =main=.
+
+  The downside is that it's a bit unclear where to do that, we need some sort of entry point?
+
+  - it could be some global dynamic hook defined in the overlay, and then executed from =my.core=
+
+    However, it's a bit intrusive, and unclear how to handle errors. E.g. what if we're monkey patching a module that we weren't intending to use, don't have dependencies installed and it's crashing?
+
+    Perhaps core could support something like =_hook= in each of HPI's modules?
+    Note that it can't be =my.twitter.all=, since we might want to override =.all= itself.
+
+    The downside is is this probably not going to work well with =tmp_config= and such -- we'll need to somehow execute the hook again on reloading the module?
+
+  - ideally we'd have something that integrates with =importlib= and executed automatically when module is imported?
+
+    TODO explore these:
+
+    - https://stackoverflow.com/questions/43571737/how-to-implement-an-import-hook-that-can-modify-the-source-code-on-the-fly-using
+    - https://github.com/brettlangdon/importhook
+
+      This one is pretty intrusive, and has some issues, e.g. https://github.com/brettlangdon/importhook/issues/4
+
+      Let's try it:
+      : $ PYTHONPATH=overlay3/src:main/src python3 -c 'import my.twitter._hook; import my.twitter.all as M; print(M.tweets())'
+      : [main] my.twitter.all hello
+      : [main] my.twitter.common hello
+      : [main] my.twitter.gdpr hello
+      : EXECUTING IMPORT HOOK!
+      : ['GDPR tweet 1', 'GDPR tweet 2']
+
+      Ok it worked, and seems pretty neat.
+      However sadly it doesn't work with =tmp_config= (TODO add a proper demo?)
+      Not sure if it's more of an issue with =tmp_config= implementation (which is very hacky), or =importhook= itself?
+
+    In addition, still the question is where to put the hook itself, but in that case even a global one could be fine.
+
+  - define hook in =my/twitter/__init__.py=
+
+    Basically, use =extend_path= to make it behave like a namespace package, but in addition, patch original =my.twitter.talon=?
+
+    : $ cat overlay2/src/my/twitter/__init__.py
+    : print(f'[overlay2] {__name__} hello')
+    :
+    : from pkgutil import extend_path
+    : __path__ = extend_path(__path__, __name__)
+    :
+    : def hack_gdpr_module() -> None:
+    :     from . import gdpr
+    :     tweets_orig = gdpr.tweets
+    :     def tweets_patched():
+    :         return [t.replace('gdpr', 'GDPR') for t in tweets_orig()]
+    :     gdpr.tweets = tweets_patched
+    :
+    : hack_gdpr_module()
+
+    This actually seems to work??
+
+    : PYTHONPATH=overlay2/src:main/src python3 -c 'import my.twitter.all as M; print(M.tweets())'
+    : [overlay2] my.twitter hello
+    : [main] my.twitter.gdpr hello
+    : [main] my.twitter.all hello
+    : [main] my.twitter.common hello
+    : ['GDPR tweet 1', 'GDPR tweet 2']
+
+    However, this doesn't stack, i.e. if the 'parent' overlay had its own =__init__.py=, it won't get called.
+
+- shadow the original module and temporarily modify =__path__= before importing the same module from the parent overlay
+
+  This approach is implemented in =my.core.experimental.import_original_module=
+
+  TODO demonstrate it properly, but I think that also works in a 'chain' of overlays
+
+  Seems like that option is the most promising so far, albeit very hacky.
+
+Note that none of these options work well with mypy (since it's all dynamic hackery), even if you disregard the issues described in the previous sections.
+
+# TODO .pkg files? somewhat interesting... https://github.com/python/cpython/blob/3.12/Lib/pkgutil.py#L395-L410

doc/QUERY.md

@@ -0,0 +1,304 @@
+`hpi query` is a command line tool for querying the output of any `hpi` function.
+
+```
+Usage: hpi query [OPTIONS] FUNCTION_NAME...
+
+  This allows you to query the results from one or more functions in HPI
+
+  By default this runs with '-o json', converting the results to JSON and
+  printing them to STDOUT
+
+  You can specify '-o pprint' to just print the objects using their repr, or
+  '-o repl' to drop into a ipython shell with access to the results
+
+  While filtering using --order-key datetime, the --after, --before and
+  --within flags parse the input to their datetime and timedelta equivalents.
+  datetimes can be epoch time, the string 'now', or an date formatted in the
+  ISO format. timedelta (durations) are parsed from a similar format to the
+  GNU 'sleep' command, e.g. 1w2d8h5m20s -> 1 week, 2 days, 8 hours, 5 minutes,
+  20 seconds
+
+  As an example, to query reddit comments I've made in the last month
+
+  hpi query --order-type datetime --before now --within 4w my.reddit.all.comments
+  or...
+  hpi query --recent 4w my.reddit.all.comments
+
+  Can also query within a range. To filter comments between 2016 and 2018:
+  hpi query --order-type datetime --after '2016-01-01' --before '2019-01-01' my.reddit.all.comments
+
+Options:
+  -o, --output [json|pprint|repl|gpx]
+                                  what to do with the result [default: json]
+  -s, --stream                    stream objects from the data source instead
+                                  of printing a list at the end
+  -k, --order-key TEXT            order by an object attribute or dict key on
+                                  the individual objects returned by the HPI
+                                  function
+  -t, --order-type [datetime|date|int|float]
+                                  order by searching for some type on the
+                                  iterable
+  -a, --after TEXT                while ordering, filter items for the key or
+                                  type larger than or equal to this
+  -b, --before TEXT               while ordering, filter items for the key or
+                                  type smaller than this
+  -w, --within TEXT               a range 'after' or 'before' to filter items
+                                  by. see above for further explanation
+  -r, --recent TEXT               a shorthand for '--order-type datetime
+                                  --reverse --before now --within'. e.g.
+                                  --recent 5d
+  --reverse / --no-reverse        reverse the results returned from the
+                                  functions
+  -l, --limit INTEGER             limit the number of items returned from the
+                                  (functions)
+  --drop-unsorted                 if the order of an item can't be determined
+                                  while ordering, drop those items from the
+                                  results
+  --wrap-unsorted                 if the order of an item can't be determined
+                                  while ordering, wrap them into an
+                                  'Unsortable' object
+  --warn-exceptions               if any errors are returned, print them as
+                                  errors on STDERR
+  --raise-exceptions              if any errors are returned (as objects, not
+                                  raised) from the functions, raise them
+  --drop-exceptions               ignore any errors returned as objects from
+                                  the functions
+  --help                          Show this message and exit.
+```
+
+This works with any function which returns an iterable, for example `my.coding.commits`, which searches for `git commit`s on your computer:
+
+```bash
+hpi query my.coding.commits
+```
+
+When run with a module, this does some analysis of the functions in that module and tries to find ones that look like data sources. If it can't figure out which, it prompts you like:
+
+```
+Which function should be used from 'my.coding.commits'?
+
+	1. commits
+	2. repos
+```
+
+You select the one you want by clicking `1` or `2` on your keyboard. Otherwise, you can provide a fully qualified path, like:
+
+```
+hpi query my.coding.commits.repos
+```
+
+The corresponding `repos` function this queries is defined in [`my/coding/commits.py`](../my/coding/commits.py)
+
+### Ordering/Filtering/Streaming
+
+By default, this just returns the items in the order they were returned by the function. This allows you to filter by specifying a `--order-key`, or `--order-type`. For example, to get the 10 most recent commits. `--order-type datetime` will try to automatically figure out which attribute to use. If it chooses the wrong one (since `Commit`s have both a `committed_dt` and `authored_dt`), you could tell it which to use. For example, to scan my computer and find the most recent commit I made:
+
+```
+hpi query my.coding.commits.commits --order-key committed_dt --limit 1 --reverse --output pprint --stream
+Commit(committed_dt=datetime.datetime(2023, 4, 14, 23, 9, 1, tzinfo=datetime.timezone(datetime.timedelta(days=-1, seconds=61200))),
+       authored_dt=datetime.datetime(2023, 4, 14, 23, 4, 1, tzinfo=datetime.timezone(datetime.timedelta(days=-1, seconds=61200))),
+       message='sources.smscalls: propagate errors if there are breaking '
+               'schema changes',
+       repo='/home/username/Repos/promnesia-fork',
+       sha='22a434fca9a28df9b0915ccf16368df129d2c9ce',
+       ref='refs/heads/smscalls-handle-result')
+```
+
+To instead limit in some range, you can use `--before` and `--within` to filter by a range. For example, to get all the commits I committed in the last day:
+
+```
+hpi query my.coding.commits.commits --order-type datetime --before now --within 1d
+```
+
+That prints a a list of `Commit` as JSON objects. You could also use `--output pprint` to pretty-print the objects or `--output repl` drop into a REPL.
+
+To process the JSON, you can pipe it to [`jq`](https://github.com/stedolan/jq). I often use `jq length` to get the count of some output:
+
+```
+hpi query my.coding.commits.commits --order-type datetime --before now --within 1d | jq length
+6
+```
+
+Because grabbing data `--before now` is such a common use case, the `--recent` flag is a shorthand for `--order-type datetime --reverse --before now --within`. The same as above, to get the commits from the last day:
+
+```
+hpi query my.coding.commits.commits --recent 1d | jq length
+6
+```
+
+To select a range of commits, you can use `--after` and `--before`, passing ISO or epoch timestamps. Those can be full `datetimes` (`2021-01-01T00:05:30`) or just dates (`2021-01-01`). For example, to get all the commits I made on January 1st, 2021:
+
+```
+hpi query my.coding.commits.commits --order-type datetime --after 2021-01-01 --before 2021-01-02 | jq length
+1
+```
+
+If you have [`dateparser`](https://github.com/scrapinghub/dateparser#how-to-use) installed, this supports dozens more natural language formats:
+
+```
+hpi query my.coding.commits.commits --order-type datetime --after 'last week' --before 'day before yesterday' | jq length
+28
+```
+
+If you're having issues ordering because there are exceptions in your results not all data is sortable (may have `None` for some attributes), you can use `--drop-unsorted` to drop those items from the results, or `--drop-exceptions` to remove the exceptions
+
+You can also stream the results, which is useful for functions that take a while to process or have a lot of data. For example, if you wanted to pick a sha hash from a particular repo, you could combine `jq` to `select` and pick that attribute from the JSON:
+
+```
+hpi query my.coding.commits.commits --recent 30d --stream | jq 'select(.repo | contains("HPI"))' | jq '.sha' -r
+4afa899c8b365b3c10e468f6279c02e316d3b650
+40de162fab741df594b4d9651348ee46ee021e9b
+e1cb229913482074dc5523e57ef0acf6e9ec2bb2
+87c13defd131e39292b93dcea661d3191222dace
+02c738594f2cae36ca4fab43cf9533fe6aa89396
+0b3a2a6ef3a9e4992771aaea0252fb28217b814a
+84817ce72d208038b66f634d4ceb6e3a4c7ec5e9
+47992b8e046d27fc5141839179f06f925c159510
+425615614bd508e28ccceb56f43c692240e429ab
+eed8f949460d768fb1f1c4801e9abab58a5f9021
+d26ad7d9ce6a4718f96346b994c3c1cd0d74380c
+aec517e53c6ac022f2b4cc91261daab5651cebf0
+44b75a88fdfc7af132f61905232877031ce32fcb
+b0ff6f29dd2846e97f8aa85a2ca73736b03254a8
+```
+
+`jq`s `select` function acts on a stream of JSON objects, not a list, so it filters the output of `hpi query` the objects are generated (the goal here is to conserve memory as items which aren't needed are filtered). The alternative would be to print the entire JSON list at the end, like:
+
+`hpi query my.coding.commits.commits --recent 30d | jq '.[] | select(.repo | contains("Repos/HPI"))' | jq '.sha' -r`, using `jq '.[]'` to convert the JSON list into a stream of JSON objects.
+
+## Usage on non-HPI code
+
+The command can accept any qualified function name, so this could for example be used to check the output of [`promnesia`](https://github.com/karlicoss/promnesia) sources:
+
+```
+hpi query promnesia.sources.smscalls | jq length
+371
+```
+
+This can be used on any function that produces an `Iterator`/`Generator` like output, as long as it can be called with no arguments.
+
+## GPX
+
+The `hpi query` command can also be used with the `--output gpx` flag to generate gpx files from a list of locations, like the ones defined in the `my.location` package. This could be used to extract some date range and create a `gpx` file which can then be visualized by a GUI application.
+
+This prints the contents for the `gpx` file to STDOUT, and prints warnings for any objects it could not convert to locations to STDERR, so pipe STDOUT to a output file, like `>out.gpx`
+
+```
+hpi query my.location.all --after '2021-07-01T00:00:00' --before '2021-07-05T00:00:00' --order-type datetime --output gpx >out.gpx
+```
+
+If you want to ignore any errors, you can use `--drop-exceptions`.
+
+To preview, you can use something like [`qgis`](https://qgis.org/en/site/) or for something easier more lightweight, [`gpxsee`](https://github.com/tumic0/GPXSee):
+
+`gpxsee out.gpx`:
+
+<img src="https://user-images.githubusercontent.com/7804791/232249184-7e203ee6-a3ec-4053-800c-751d2c28e690.png" width=500 alt="chicago trip" />
+
+(Sidenote: this is [`@purarue`](https://github.com/purarue/)s locations, on a trip to Chicago)
+
+## Python reference
+
+The `hpi query` command is a CLI wrapper around the code in [`query.py`](../my/core/query.py) and [`query_range.py`](../my/core/query_range.py). The `select` function is the core of this, and `select_range` lets you specify dates, timedelta, start-end ranges, and other CLI-specific code.
+
+`my.core.query.select`:
+
+```
+    A function to query, order, sort and filter items from one or more sources
+    This supports iterables and lists of mixed types (including handling errors),
+    by allowing you to provide custom predicates (functions) which can sort
+    by a function, an attribute, dict key, or by the attributes values.
+
+    Since this supports mixed types, there's always a possibility
+    of KeyErrors or AttributeErrors while trying to find some value to order by,
+    so this provides multiple mechanisms to deal with that
+
+    'where' lets you filter items before ordering, to remove possible errors
+    or filter the iterator by some condition
+
+    There are multiple ways to instruct select on how to order items. The most
+    flexible is to provide an 'order_by' function, which takes an item in the
+    iterator, does any custom checks you may want and then returns the value to sort by
+
+    'order_key' is best used on items which have a similar structure, or have
+    the same attribute name for every item in the iterator. If you have a
+    iterator of objects whose datetime is accessed by the 'timestamp' attribute,
+    supplying order_key='timestamp' would sort by that (dictionary or attribute) key
+
+    'order_value' is the most confusing, but often the most useful. Instead of
+    testing against the keys of an item, this allows you to write a predicate
+    (function) to test against its values (dictionary, NamedTuple, dataclass, object).
+    If you had an iterator of mixed types and wanted to sort by the datetime,
+    but the attribute to access the datetime is different on each type, you can
+    provide `order_value=lambda v: isinstance(v, datetime)`, and this will
+    try to find that value for each type in the iterator, to sort it by
+    the value which is received when the predicate is true
+
+    'order_value' is often used in the 'hpi query' interface, because of its brevity.
+    Just given the input function, this can typically sort it by timestamp with
+    no human intervention. It can sort of be thought as an educated guess,
+    but it can always be improved by providing a more complete guess function
+
+    Note that 'order_value' is also the most computationally expensive, as it has
+    to copy the iterator in memory (using itertools.tee) to determine how to order it
+    in memory
+
+    The 'drop_exceptions', 'raise_exceptions', 'warn_exceptions' let you ignore or raise
+    when the src contains exceptions. The 'warn_func' lets you provide a custom function
+    to call when an exception is encountered instead of using the 'warnings' module
+
+    src:            an iterable of mixed types, or a function to be called,
+                    as the input to this function
+
+    where:          a predicate which filters the results before sorting
+
+    order_by:       a function which when given an item in the src,
+                    returns the value to sort by. Similar to the 'key' value
+                    typically passed directly to 'sorted'
+
+    order_key:      a string which represents a dict key or attribute name
+                    to use as they key to sort by
+
+    order_value:    predicate which determines which attribute on an ADT-like item to sort by,
+                    when given its value. lambda o: isinstance(o, datetime) is commonly passed to sort
+                    by datetime, without knowing the attributes or interface for the items in the src
+
+    default:        while ordering, if the order for an object cannot be determined,
+                    use this as the default value
+
+    reverse:        reverse the order of the resulting iterable
+
+    limit:          limit the results to this many items
+
+    drop_unsorted:  before ordering, drop any items from the iterable for which a
+                    order could not be determined. False by default
+
+    wrap_unsorted:  before ordering, wrap any items into an 'Unsortable' object. Place
+                    them at the front of the list. True by default
+
+    drop_exceptions: ignore any exceptions from the src
+
+    raise_exceptions: raise exceptions when received from the input src
+```
+
+`my.core.query_range.select_range`:
+
+```
+    A specialized select function which offers generating functions
+    to filter/query ranges from an iterable
+
+    order_key and order_value are used in the same way they are in select
+
+    If you specify order_by_value_type, it tries to search for an attribute
+    on each object/type which has that type, ordering the iterable by that value
+
+    unparsed_range is a tuple of length 3, specifying 'after', 'before', 'duration',
+    i.e. some start point to allow the computed value we're ordering by, some
+    end point and a duration (can use the RangeTuple NamedTuple to construct one)
+
+    (this is typically parsed/created in my.core.__main__, from CLI flags
+
+    If you specify a range, drop_unsorted is forced to be True
+```
+
+Those can be imported and accept any sort of iterator, `hpi query` just defaults to the output of functions here. As an example, see [`listens`](https://github.com/purarue/HPI-personal/blob/master/scripts/listens) which just passes an generator (iterator) as the first argument to `query_range`

doc/SETUP.org

@@ -105,10 +105,11 @@ You can also install some optional packages
 
 They aren't necessary, but will improve your experience. At the moment these are:
 
-- [[https://github.com/karlicoss/cachew][cachew]]: automatic caching library, which can greatly speedup data access
-- [[https://github.com/metachris/logzero][logzero]]: a nice logging library, supporting colors
 - [[https://github.com/ijl/orjson][orjson]]: a library for serializing data to JSON, used in ~my.core.serialize~ and the ~hpi query~ interface
+- [[https://github.com/karlicoss/cachew][cachew]]: automatic caching library, which can greatly speedup data access
 - [[https://github.com/python/mypy][mypy]]: mypy is used for checking configs and troubleshooting
+- [[https://github.com/borntyping/python-colorlog][colorlog]]: colored formatter for ~logging~ module
+- [[https://github.com/Rockhopper-Technologies/enlighten]]: console progress bar library
 
 * Setting up modules
 This is an *optional step* as few modules work without extra setup.
@@ -191,7 +192,13 @@ HPI comes with a command line tool that can help you detect potential issues. Ru
 
 If you only have a few modules set up, lots of them will error for you, which is expected, so check the ones you expect to work.
 
-If you're having issues with ~cachew~ or want to show logs to troubleshoot what may be happening, you can pass the debug flag (e.g., ~hpi --debug doctor my.module_name~) or set the ~HPI_LOGS~ environment variable (e.g., ~HPI_LOGS=debug hpi query my.module_name~) to print all logs, including the ~cachew~ dependencies. ~HPI_LOGS~ could also be used to silence ~info~ logs, like ~HPI_LOGS=warning hpi ...~
+If you're having issues with ~cachew~ or want to show logs to troubleshoot what may be happening, you can pass the debug flag (e.g., ~hpi --debug doctor my.module_name~) or set the ~LOGGING_LEVEL_HPI~ environment variable (e.g., ~LOGGING_LEVEL_HPI=debug hpi query my.module_name~) to print all logs, including the ~cachew~ dependencies. ~LOGGING_LEVEL_HPI~ could also be used to silence ~info~ logs, like ~LOGGING_LEVEL_HPI=warning hpi ...~
+
+If you want to enable logs for a particular module, you can use the
+~LOGGING_LEVEL_~ prefix and then the module name with underscores, like
+~LOGGING_LEVEL_my_hypothesis=debug hpi query my.hypothesis~
+
+If you want ~HPI~ to autocomplete the module names for you, this comes with shell completion, see [[../misc/completion/][misc/completion]]
 
 If you have any ideas on how to improve it, please let me know!
 
@@ -380,7 +387,7 @@ But there is an extra caveat: rexport is already coming with nice [[https://gith
 
 Several other HPI modules are following a similar pattern: hypothesis, instapaper, pinboard, kobo, etc.
 
-Since the [[https://github.com/karlicoss/rexport#api-limitations][reddit API has limited results]], you can use [[https://github.com/seanbreckenridge/pushshift_comment_export][my.reddit.pushshift]] to access older reddit comments, which both then get merged into =my.reddit.all.comments=
+Since the [[https://github.com/karlicoss/rexport#api-limitations][reddit API has limited results]], you can use [[https://github.com/purarue/pushshift_comment_export][my.reddit.pushshift]] to access older reddit comments, which both then get merged into =my.reddit.all.comments=
 
 ** Twitter
 
@@ -450,7 +457,7 @@ connect the data with other apps and libraries!
 
 See more in [[file:../README.org::#how-do-you-use-it]["How do you use it?"]] section.
 
-Also check out [[https://beepb00p.xyz/myinfra.html#hpi][my personal infrastructure map]] to see wher I'm using HPI.
+Also check out [[https://beepb00p.xyz/myinfra.html#hpi][my personal infrastructure map]] to see where I'm using HPI.
 
 * Adding/modifying modules
 # TODO link to 'overlays' documentation?

doc/overlays/install_packages.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+set -eux
+pip3 install --user "$@" -e main/
+pip3 install --user "$@" -e overlay/

doc/overlays/main/setup.py

@@ -0,0 +1,17 @@
+from setuptools import setup, find_namespace_packages # type: ignore
+
+
+def main() -> None:
+    pkgs = find_namespace_packages('src')
+    pkg = min(pkgs)
+    setup(
+        name='hpi-main',
+        zip_safe=False,
+        packages=pkgs,
+        package_dir={'': 'src'},
+        package_data={pkg: ['py.typed']},
+    )
+
+
+if __name__ == '__main__':
+    main()

doc/overlays/main/src/my/reddit.py

@@ -0,0 +1,11 @@
+print(f'[main] {__name__} hello')
+
+
+def upvotes() -> list[str]:
+    return [
+        'reddit upvote1',
+        'reddit upvote2',
+    ]
+
+
+trigger_mypy_error: str = 123

doc/overlays/main/src/my/twitter/all.py

@@ -0,0 +1,7 @@
+print(f'[main] {__name__} hello')
+
+from .common import merge
+
+def tweets() -> list[str]:
+    from . import gdpr
+    return merge(gdpr)

doc/overlays/main/src/my/twitter/common.py

@@ -0,0 +1,11 @@
+print(f'[main] {__name__} hello')
+
+from typing import Protocol
+
+class Source(Protocol):
+    def tweets(self) -> list[str]:
+        ...
+
+def merge(*sources: Source) -> list[str]:
+    from itertools import chain
+    return list(chain.from_iterable(src.tweets() for src in sources))

doc/overlays/main/src/my/twitter/gdpr.py

@@ -0,0 +1,9 @@
+print(f'[main] {__name__} hello')
+
+def tweets() -> list[str]:
+    return [
+        'gdpr tweet 1',
+        'gdpr tweet 2',
+    ]
+
+trigger_mypy_error: str = 123

doc/overlays/overlay/setup.py

@@ -0,0 +1,17 @@
+from setuptools import setup, find_namespace_packages # type: ignore
+
+
+def main() -> None:
+    pkgs = find_namespace_packages('src')
+    pkg = min(pkgs)
+    setup(
+        name='hpi-overlay',
+        zip_safe=False,
+        packages=pkgs,
+        package_dir={'': 'src'},
+        package_data={pkg: ['py.typed']},
+    )
+
+
+if __name__ == '__main__':
+    main()

doc/overlays/overlay/src/my/twitter/all.py

@@ -0,0 +1,8 @@
+print(f'[overlay] {__name__} hello')
+
+from .common import merge
+
+def tweets() -> list[str]:
+    from . import gdpr
+    from . import talon
+    return merge(gdpr, talon)

doc/overlays/overlay/src/my/twitter/talon.py

@@ -0,0 +1,9 @@
+print(f'[overlay] {__name__} hello')
+
+def tweets() -> list[str]:
+    return [
+        'talon tweet 1',
+        'talon tweet 2',
+    ]
+
+trigger_mypy_error: str = 123

doc/overlays/overlay2/setup.py

@@ -0,0 +1,17 @@
+from setuptools import setup, find_namespace_packages # type: ignore
+
+
+def main() -> None:
+    pkgs = find_namespace_packages('src')
+    pkg = min(pkgs)
+    setup(
+        name='hpi-overlay2',
+        zip_safe=False,
+        packages=pkgs,
+        package_dir={'': 'src'},
+        package_data={pkg: ['py.typed']},
+    )
+
+
+if __name__ == '__main__':
+    main()

doc/overlays/overlay2/src/my/twitter/__init__.py

@@ -0,0 +1,13 @@
+print(f'[overlay2] {__name__} hello')
+
+from pkgutil import extend_path
+__path__ = extend_path(__path__, __name__)
+
+def hack_gdpr_module() -> None:
+    from . import gdpr
+    tweets_orig = gdpr.tweets
+    def tweets_patched():
+        return [t.replace('gdpr', 'GDPR') for t in tweets_orig()]
+    gdpr.tweets = tweets_patched
+
+hack_gdpr_module()

doc/overlays/overlay3/setup.py

@@ -0,0 +1,17 @@
+from setuptools import setup, find_namespace_packages # type: ignore
+
+
+def main() -> None:
+    pkgs = find_namespace_packages('src')
+    pkg = min(pkgs)
+    setup(
+        name='hpi-overlay3',
+        zip_safe=False,
+        packages=pkgs,
+        package_dir={'': 'src'},
+        package_data={pkg: ['py.typed']},
+    )
+
+
+if __name__ == '__main__':
+    main()

doc/overlays/overlay3/src/my/twitter/_hook.py

@@ -0,0 +1,9 @@
+import importhook
+
+@importhook.on_import('my.twitter.gdpr')
+def on_import(gdpr):
+    print("EXECUTING IMPORT HOOK!")
+    tweets_orig = gdpr.tweets
+    def tweets_patched():
+        return [t.replace('gdpr', 'GDPR') for t in tweets_orig()]
+    gdpr.tweets = tweets_patched

misc/.flake8-karlicoss

@@ -32,6 +32,6 @@ ignore =
 # 
 
 # as a reference:
-# https://github.com/seanbreckenridge/cookiecutter-template/blob/master/%7B%7Bcookiecutter.module_name%7D%7D/setup.cfg
+# https://github.com/purarue/cookiecutter-template/blob/master/%7B%7Bcookiecutter.module_name%7D%7D/setup.cfg
 # and this https://github.com/karlicoss/HPI/pull/151
 # find ./my | entr flake8 --ignore=E402,E501,E741,W503,E266,E302,E305,E203,E261,E252,E251,E221,W291,E225,E303,E702,E202,F841,E731,E306,E127 E722,E231 my | grep -v __NOT_HPI_MODULE__

misc/check-twitter.sh

@@ -46,7 +46,7 @@ check '2016-12-13 Tue 20:23.*TIL:.*pypi.python.org/pypi/coloredlogs'
 
 
 # https://twitter.com/karlicoss/status/472151454044917761
-# archive isn't explaning images by default
+# archive isn't expanding images by default
 check '2014-05-29 Thu 23:04.*Выколол сингулярность.*pic.twitter.com/M6XRN1n7KW'
 
 
@@ -76,7 +76,7 @@ check '2014-12-31 Wed 21:00.*2015 заебал'
 check '2021-05-14 Fri 21:08.*RT @SNunoPerez: Me explaining Rage.*'
 
 
-# make sure there is a single occurence (hence, correct tzs)
+# make sure there is a single occurrence (hence, correct tzs)
 check 'A short esoteric Python'
 # https://twitter.com/karlicoss/status/1499174823272099842
 check 'It would be a really good time for countries'

misc/completion/README.md

@@ -10,21 +10,23 @@ eval "$(_HPI_COMPLETE=fish_source hpi)"  # in ~/.config/fish/config.fish
 
 That is slightly slower since its generating the completion code on the fly -- see [click docs](https://click.palletsprojects.com/en/8.0.x/shell-completion/#enabling-completion) for more info
 
-To use the completions here:
+To use the generated completion files in this repository, you need to source the file in `./bash`, `./zsh`, or `./fish` depending on your shell.
+
+If you don't have HPI cloned locally, after installing `HPI` you can generate the file yourself using one of the commands above. For example, for `bash`: `_HPI_COMPLETE=bash_source hpi > ~/.config/hpi_bash_completion`, and then source it like `source ~/.config/hpi_bash_completion`
 
 ### bash
 
-Put `source /path/to/bash/_hpi` in your `~/.bashrc`
+Put `source /path/to/hpi/repo/misc/completion/bash/_hpi` in your `~/.bashrc`
 
 ### zsh
 
 You can either source the file:
 
-`source /path/to/zsh/_hpi`
+`source /path/to/hpi/repo/misc/completion/zsh/_hpi`
 
 ..or add the directory to your `fpath` to load it lazily:
 
-`fpath=("/path/to/zsh/" "${fpath[@]}")` (Note: the directory, not the script `_hpi`)
+`fpath=("/path/to/hpi/repo/misc/completion/zsh/" "${fpath[@]}")` (Note: the directory, not the script `_hpi`)
 
 If your zsh configuration doesn't automatically run `compinit`, after modifying your `fpath` you should:
 

misc/completion/fish/hpi.fish

@@ -1,9 +1,5 @@
 function _hpi_completion;
-    set -l response;
-
-    for value in (env _HPI_COMPLETE=fish_complete COMP_WORDS=(commandline -cp) COMP_CWORD=(commandline -t) hpi);
-        set response $response $value;
-    end;
+    set -l response (env _HPI_COMPLETE=fish_complete COMP_WORDS=(commandline -cp) COMP_CWORD=(commandline -t) hpi);
 
     for completion in $response;
         set -l metadata (string split "," $completion);

misc/completion/zsh/_hpi

@@ -31,5 +31,11 @@ _hpi_completion() {
     fi
 }
 
-compdef _hpi_completion hpi;
+if [[ $zsh_eval_context[-1] == loadautofunc ]]; then
+    # autoload from fpath, call function directly
+    _hpi_completion "$@"
+else
+    # eval/source/. command, register function for later
+    compdef _hpi_completion hpi
+fi
 

my/arbtt.py

@@ -2,19 +2,22 @@
 [[https://github.com/nomeata/arbtt#arbtt-the-automatic-rule-based-time-tracker][Arbtt]] time tracking
 '''
 
+from __future__ import annotations
+
 REQUIRES = ['ijson', 'cffi']
 # NOTE likely also needs libyajl2 from apt or elsewhere?
 
 
+from collections.abc import Iterable, Sequence
+from dataclasses import dataclass
 from pathlib import Path
-from typing import Sequence, Iterable, List, Optional
 
 
 def inputs() -> Sequence[Path]:
     try:
         from my.config import arbtt as user_config
     except ImportError:
-        from .core.warnings import low
+        from my.core.warnings import low
         low("Couldn't find 'arbtt' config section, falling back to the default capture.log (usually in HOME dir). Add 'arbtt' section with logfiles = '' to suppress this warning.")
         return []
     else:
@@ -22,8 +25,9 @@ def inputs() -> Sequence[Path]:
         return get_files(user_config.logfiles)
 
 
-from .core import dataclass, Json, PathIsh, datetime_aware
-from .core.common import isoparse
+
+from my.core import Json, PathIsh, datetime_aware
+from my.core.compat import fromisoformat
 
 
 @dataclass
@@ -39,6 +43,7 @@ class Entry:
     @property
     def dt(self) -> datetime_aware:
         # contains utc already
+        # TODO after python>=3.11, could just use fromisoformat
         ds = self.json['date']
         elen = 27
         lds = len(ds)
@@ -46,13 +51,13 @@ class Entry:
             # ugh. sometimes contains less that 6 decimal points
             ds = ds[:-1] + '0' * (elen - lds) + 'Z'
         elif lds > elen:
-            # ahd sometimes more...
+            # and sometimes more...
             ds = ds[:elen - 1] + 'Z'
 
-        return isoparse(ds)
+        return fromisoformat(ds)
 
     @property
-    def active(self) -> Optional[str]:
+    def active(self) -> str | None:
         # NOTE: WIP, might change this in the future...
         ait = (w for w in self.json['windows'] if w['active'])
         a = next(ait, None)
@@ -71,17 +76,18 @@ class Entry:
 def entries() -> Iterable[Entry]:
     inps = list(inputs())
 
-    base: List[PathIsh] = ['arbtt-dump', '--format=json']
+    base: list[PathIsh] = ['arbtt-dump', '--format=json']
 
-    cmds: List[List[PathIsh]]
+    cmds: list[list[PathIsh]]
     if len(inps) == 0:
         cmds = [base] # rely on default
     else:
-        # otherise, 'merge' them
-        cmds = [base + ['--logfile', f] for f in inps]
+        # otherwise, 'merge' them
+        cmds = [[*base, '--logfile', f] for f in inps]
+
+    from subprocess import PIPE, Popen
 
     import ijson.backends.yajl2_cffi as ijson  # type: ignore
-    from subprocess import Popen, PIPE
     for cmd in cmds:
         with Popen(cmd, stdout=PIPE) as p:
             out = p.stdout; assert out is not None
@@ -90,8 +96,8 @@ def entries() -> Iterable[Entry]:
 
 
 def fill_influxdb() -> None:
-    from .core.influxdb import magic_fill
     from .core.freezer import Freezer
+    from .core.influxdb import magic_fill
     freezer = Freezer(Entry)
     fit = (freezer.freeze(e) for e in entries())
     # TODO crap, influxdb doesn't like None https://github.com/influxdata/influxdb/issues/7722
@@ -103,6 +109,8 @@ def fill_influxdb() -> None:
     magic_fill(fit, name=f'{entries.__module__}:{entries.__name__}')
 
 
-from .core import stat, Stats
+from .core import Stats, stat
+
+
 def stats() -> Stats:
     return stat(entries)

my/bluemaestro.py

@@ -1,34 +1,70 @@
-#!/usr/bin/python3
 """
 [[https://bluemaestro.com/products/product-details/bluetooth-environmental-monitor-and-logger][Bluemaestro]] temperature/humidity/pressure monitor
 """
 
+from __future__ import annotations
+
 # todo most of it belongs to DAL... but considering so few people use it I didn't bother for now
-from datetime import datetime, timedelta
-from pathlib import Path
 import re
 import sqlite3
-from typing import Iterable, Sequence, Set, Optional
+from abc import abstractmethod
+from collections.abc import Iterable, Sequence
+from dataclasses import dataclass
+from datetime import datetime, timedelta
+from pathlib import Path
+from typing import Protocol
 
-from my.core import get_files, LazyLogger, dataclass, Res
+import pytz
+
+from my.core import (
+    Paths,
+    Res,
+    Stats,
+    get_files,
+    make_logger,
+    stat,
+    unwrap,
+)
+from my.core.cachew import mcachew
+from my.core.pandas import DataFrameT, as_dataframe
 from my.core.sqlite import sqlite_connect_immutable
 
-from my.config import bluemaestro as config
+
+class config(Protocol):
+    @property
+    @abstractmethod
+    def export_path(self) -> Paths:
+        raise NotImplementedError
+
+    @property
+    def tz(self) -> pytz.BaseTzInfo:
+        # fixme: later, rely on the timezone provider
+        # NOTE: the timezone should be set with respect to the export date!!!
+        return pytz.timezone('Europe/London')
+        # TODO when I change tz, check the diff
 
 
-# todo control level via env variable?
-# i.e. HPI_LOGGING_MY_BLUEMAESTRO_LEVEL=debug
-logger = LazyLogger(__name__, level='debug')
+def make_config() -> config:
+    from my.config import bluemaestro as user_config
+
+    class combined_config(user_config, config): ...
+
+    return combined_config()
+
+
+logger = make_logger(__name__)
 
 
 def inputs() -> Sequence[Path]:
-    return get_files(config.export_path)
+    cfg = make_config()
+    return get_files(cfg.export_path)
 
 
 Celsius = float
 Percent = float
 mBar = float
 
+
 @dataclass
 class Measurement:
     dt: datetime  # todo aware/naive
@@ -38,41 +74,39 @@ class Measurement:
     dewpoint: Celsius
 
 
-# fixme: later, rely on the timezone provider
-# NOTE: the timezone should be set with respect to the export date!!!
-import pytz # type: ignore
-tz = pytz.timezone('Europe/London')
-# TODO when I change tz, check the diff
-
-
 def is_bad_table(name: str) -> bool:
     # todo hmm would be nice to have a hook that can patch any module up to
     delegate = getattr(config, 'is_bad_table', None)
     return False if delegate is None else delegate(name)
 
 
-from my.core.cachew import cache_dir
-from my.core.common import mcachew
-@mcachew(depends_on=lambda: inputs(), cache_path=cache_dir('bluemaestro'))
+@mcachew(depends_on=inputs)
 def measurements() -> Iterable[Res[Measurement]]:
-    # todo ideally this would be via arguments... but needs to be lazy
-    dbs = inputs()
+    cfg = make_config()
+    tz = cfg.tz
 
-    last: Optional[datetime] = None
+    # todo ideally this would be via arguments... but needs to be lazy
+    paths = inputs()
+    total = len(paths)
+    width = len(str(total))
+
+    last: datetime | None = None
 
     # tables are immutable, so can save on processing..
-    processed_tables: Set[str] = set()
-    for f in dbs:
-        logger.debug('processing %s', f)
+    processed_tables: set[str] = set()
+    for idx, path in enumerate(paths):
+        logger.info(f'processing [{idx:>{width}}/{total:>{width}}] {path}')
         tot = 0
         new = 0
         # todo assert increasing timestamp?
-        with sqlite_connect_immutable(f) as db:
-            db_dt: Optional[datetime] = None
+        with sqlite_connect_immutable(path) as db:
+            db_dt: datetime | None = None
             try:
-                datas = db.execute(f'SELECT "{f.name}" as name, Time, Temperature, Humidity, Pressure, Dewpoint FROM data ORDER BY log_index')
+                datas = db.execute(
+                    f'SELECT "{path.name}" as name, Time, Temperature, Humidity, Pressure, Dewpoint FROM data ORDER BY log_index'
+                )
                 oldfmt = True
-                db_dts = list(db.execute('SELECT last_download FROM info'))[0][0]
+                [(db_dts,)] = db.execute('SELECT last_download FROM info')
                 if db_dts == 'N/A':
                     # ??? happens for 20180923-20180928
                     continue
@@ -105,7 +139,7 @@ def measurements() -> Iterable[Res[Measurement]]:
                 processed_tables |= set(log_tables)
 
                 # todo use later?
-                frequencies = [list(db.execute(f'SELECT interval from {t.replace("_log", "_meta")}'))[0][0] for t in log_tables]
+                frequencies = [list(db.execute(f'SELECT interval from {t.replace("_log", "_meta")}'))[0][0] for t in log_tables]  # noqa: RUF015
 
                 # todo could just filter out the older datapoints?? dunno.
 
@@ -121,7 +155,7 @@ def measurements() -> Iterable[Res[Measurement]]:
                 oldfmt = False
                 db_dt = None
 
-            for i, (name, tsc, temp, hum, pres, dewp) in enumerate(datas):
+            for (name, tsc, temp, hum, pres, dewp) in datas:
                 if is_bad_table(name):
                     continue
 
@@ -145,7 +179,7 @@ def measurements() -> Iterable[Res[Measurement]]:
                 upper = timedelta(days=10)  # kinda arbitrary
                 if not (db_dt - lower < dt < db_dt + timedelta(days=10)):
                     # todo could be more defenive??
-                    yield RuntimeError('timestamp too far out', f, name, db_dt, dt)
+                    yield RuntimeError('timestamp too far out', path, name, db_dt, dt)
                     continue
 
                 # err.. sometimes my values are just interleaved with these for no apparent reason???
@@ -153,7 +187,7 @@ def measurements() -> Iterable[Res[Measurement]]:
                     yield RuntimeError('the weird sensor bug')
                     continue
 
-                assert -60 <= temp <= 60, (f, dt, temp)
+                assert -60 <= temp <= 60, (path, dt, temp)
                 ##
 
                 tot += 1
@@ -170,7 +204,7 @@ def measurements() -> Iterable[Res[Measurement]]:
                     dewpoint=dewp,
                 )
                 yield p
-        logger.debug('%s: new %d/%d', f, new, tot)
+        logger.debug(f'{path}: new {new}/{tot}')
     # logger.info('total items: %d', len(merged))
     # for k, v in merged.items():
     #     # TODO shit. quite a few of them have varying values... how is that freaking possible????
@@ -180,12 +214,11 @@ def measurements() -> Iterable[Res[Measurement]]:
     # for k, v in merged.items():
     #     yield Point(dt=k, temp=v) # meh?
 
-from my.core import stat, Stats
+
 def stats() -> Stats:
     return stat(measurements)
 
 
-from my.core.pandas import DataFrameT, as_dataframe
 def dataframe() -> DataFrameT:
     """
     %matplotlib gtk
@@ -200,6 +233,7 @@ def dataframe() -> DataFrameT:
 
 def fill_influxdb() -> None:
     from my.core import influxdb
+
     influxdb.fill(measurements(), measurement=__name__)
 
 
@@ -207,7 +241,6 @@ def check() -> None:
     temps = list(measurements())
     latest = temps[:-2]
 
-    from my.core.error import unwrap
     prev = unwrap(latest[-2]).dt
     last = unwrap(latest[-1]).dt
 

my/body/blood.py

@@ -2,41 +2,42 @@
 Blood tracking (manual org-mode entries)
 """
 
+from __future__ import annotations
+
+from collections.abc import Iterable
 from datetime import datetime
-from typing import Iterable, NamedTuple, Optional
+from typing import NamedTuple
 
-from ..core.error import Res
-from ..core.orgmode import parse_org_datetime, one_table
-
-
-import pandas as pd # type: ignore
 import orgparse
-
+import pandas as pd
 
 from my.config import blood as config  # type: ignore[attr-defined]
 
+from ..core.error import Res
+from ..core.orgmode import one_table, parse_org_datetime
+
 
 class Entry(NamedTuple):
     dt: datetime
 
-    ketones      : Optional[float]=None
-    glucose      : Optional[float]=None
+    ketones      : float | None=None
+    glucose      : float | None=None
 
-    vitamin_d    : Optional[float]=None
-    vitamin_b12  : Optional[float]=None
+    vitamin_d    : float | None=None
+    vitamin_b12  : float | None=None
 
-    hdl          : Optional[float]=None
-    ldl          : Optional[float]=None
-    triglycerides: Optional[float]=None
+    hdl          : float | None=None
+    ldl          : float | None=None
+    triglycerides: float | None=None
 
-    source       : Optional[str]=None
-    extra        : Optional[str]=None
+    source       : str | None=None
+    extra        : str | None=None
 
 
 Result = Res[Entry]
 
 
-def try_float(s: str) -> Optional[float]:
+def try_float(s: str) -> float | None:
     l = s.split()
     if len(l) == 0:
         return None
@@ -105,6 +106,7 @@ def blood_tests_data() -> Iterable[Result]:
 
 def data() -> Iterable[Result]:
     from itertools import chain
+
     from ..core.error import sort_res_by
     datas = chain(glucose_ketones_data(), blood_tests_data())
     return sort_res_by(datas, key=lambda e: e.dt)

my/body/exercise/all.py

@@ -7,10 +7,10 @@ from ...core.pandas import DataFrameT, check_dataframe
 @check_dataframe
 def dataframe() -> DataFrameT:
     # this should be somehow more flexible...
+    import pandas as pd
+
     from ...endomondo import dataframe as EDF
     from ...runnerup import dataframe as RDF
-
-    import pandas as pd # type: ignore
     return pd.concat([
         EDF(),
         RDF(),

my/body/exercise/cardio.py

@@ -3,7 +3,6 @@ Cardio data, filtered from various data sources
 '''
 from ...core.pandas import DataFrameT, check_dataframe
 
-
 CARDIO     = {
     'Running',
     'Running, treadmill',

my/body/exercise/cross_trainer.py

@@ -5,16 +5,18 @@ This is probably too specific to my needs, so later I will move it away to a per
 For now it's worth keeping it here as an example and perhaps utility functions might be useful for other HPI modules.
 '''
 
-from datetime import datetime, timedelta
-from typing import Optional
+from __future__ import annotations
 
-from ...core.pandas import DataFrameT, check_dataframe as cdf
-from ...core.orgmode import collect, Table, parse_org_datetime, TypedTable
+from datetime import datetime, timedelta
+
+import pytz
 
 from my.config import exercise as config
 
+from ...core.orgmode import Table, TypedTable, collect, parse_org_datetime
+from ...core.pandas import DataFrameT
+from ...core.pandas import check_dataframe as cdf
 
-import pytz
 # FIXME how to attach it properly?
 tz = pytz.timezone('Europe/London')
 
@@ -78,7 +80,7 @@ def cross_trainer_manual_dataframe() -> DataFrameT:
     '''
     Only manual org-mode entries
     '''
-    import pandas as pd # type: ignore[import]
+    import pandas as pd
     df = pd.DataFrame(cross_trainer_data())
     return df
 
@@ -91,7 +93,7 @@ def dataframe() -> DataFrameT:
     '''
     Attaches manually logged data (which Endomondo can't capture) and attaches it to Endomondo
     '''
-    import pandas as pd # type: ignore[import]
+    import pandas as pd
 
     from ...endomondo import dataframe as EDF
     edf = EDF()
@@ -105,7 +107,7 @@ def dataframe() -> DataFrameT:
     rows = []
     idxs = [] # type: ignore[var-annotated]
     NO_ENDOMONDO = 'no endomondo matches'
-    for i, row in mdf.iterrows():
+    for _i, row in mdf.iterrows():
         rd = row.to_dict()
         mdate = row['date']
         if pd.isna(mdate):
@@ -114,7 +116,7 @@ def dataframe() -> DataFrameT:
             rows.append(rd) # presumably has an error set
             continue
 
-        idx: Optional[int]
+        idx: int | None
         close = edf[edf['start_time'].apply(lambda t: pd_date_diff(t, mdate)).abs() < _DELTA]
         if len(close) == 0:
             idx = None
@@ -146,7 +148,7 @@ def dataframe() -> DataFrameT:
     # todo careful about 'how'? we need it to preserve the errors
     # maybe pd.merge is better suited for this??
     df = edf.join(mdf, how='outer', rsuffix='_manual')
-    # todo reindex? so we dont' have Nan leftovers
+    # todo reindex? so we don't have Nan leftovers
 
     # todo set date anyway? maybe just squeeze into the index??
     noendo = df['error'] == NO_ENDOMONDO
@@ -163,7 +165,9 @@ def dataframe() -> DataFrameT:
 # TODO wtf?? where is speed coming from??
 
 
-from ...core import stat, Stats
+from ...core import Stats, stat
+
+
 def stats() -> Stats:
     return stat(cross_trainer_data)
 

my/body/sleep/common.py

@@ -1,5 +1,6 @@
-from ...core import stat, Stats
-from ...core.pandas import DataFrameT, check_dataframe as cdf
+from ...core import Stats, stat
+from ...core.pandas import DataFrameT
+from ...core.pandas import check_dataframe as cdf
 
 
 class Combine:
@@ -7,8 +8,8 @@ class Combine:
         self.modules = modules
 
     @cdf
-    def dataframe(self, with_temperature: bool=True) -> DataFrameT:
-        import pandas as pd # type: ignore
+    def dataframe(self, *, with_temperature: bool=True) -> DataFrameT:
+        import pandas as pd
         # todo include 'source'?
         df = pd.concat([m.dataframe() for m in self.modules])
 
@@ -17,15 +18,21 @@ class Combine:
             bdf = BM.dataframe()
             temp = bdf['temp']
 
+            # sort index and drop nans, otherwise indexing with [start: end] gonna complain
+            temp = pd.Series(
+                temp.values,
+                index=pd.to_datetime(temp.index, utc=True)
+            ).sort_index()
+            temp = temp.loc[temp.index.dropna()]
+
             def calc_avg_temperature(row):
                 start = row['sleep_start']
                 end   = row['sleep_end']
                 if pd.isna(start) or pd.isna(end):
                     return None
 
-                between = (start <= temp.index) & (temp.index <= end)
                 # on no temp data, returns nan, ok
-                return temp[between].mean()
+                return temp[start: end].mean()
 
             df['avg_temp'] = df.apply(calc_avg_temperature, axis=1)
         return df

my/body/sleep/main.py

@@ -1,7 +1,6 @@
-from ... import jawbone
-from ... import emfit
-
+from ... import emfit, jawbone
 from .common import Combine
+
 _combined = Combine([
     jawbone,
     emfit,

my/body/weight.py

@@ -2,21 +2,29 @@
 Weight data (manually logged)
 '''
 
+from collections.abc import Iterator
+from dataclasses import dataclass
 from datetime import datetime
-from typing import NamedTuple, Iterator
+from typing import Any
 
-from ..core import LazyLogger
-from ..core.error import Res, set_error_datetime, extract_error_datetime
+from my import orgmode
+from my.core import make_logger
+from my.core.error import Res, extract_error_datetime, set_error_datetime
 
-from .. import orgmode
-
-from my.config import weight as config  # type: ignore[attr-defined]
+config = Any
 
 
-log = LazyLogger('my.body.weight')
+def make_config() -> config:
+    from my.config import weight as user_config  # type: ignore[attr-defined]
+
+    return user_config()
 
 
-class Entry(NamedTuple):
+log = make_logger(__name__)
+
+
+@dataclass
+class Entry:
     dt: datetime
     value: float
     # TODO comment??
@@ -26,6 +34,8 @@ Result = Res[Entry]
 
 
 def from_orgmode() -> Iterator[Result]:
+    cfg = make_config()
+
     orgs = orgmode.query()
     for o in orgmode.query().all():
         if 'weight' not in o.tags:
@@ -46,7 +56,7 @@ def from_orgmode() -> Iterator[Result]:
             yield e
             continue
         # FIXME use timezone provider
-        created = config.default_timezone.localize(created)
+        created = cfg.default_timezone.localize(created)
         assert created is not None  # ??? somehow mypy wasn't happy?
         yield Entry(
             dt=created,
@@ -56,7 +66,8 @@ def from_orgmode() -> Iterator[Result]:
 
 
 def make_dataframe(data: Iterator[Result]):
-    import pandas as pd # type: ignore
+    import pandas as pd
+
     def it():
         for e in data:
             if isinstance(e, Exception):
@@ -70,8 +81,9 @@ def make_dataframe(data: Iterator[Result]):
                     'dt': e.dt,
                     'weight': e.value,
                 }
+
     df = pd.DataFrame(it())
-    df.set_index('dt', inplace=True)
+    df = df.set_index('dt')
     # TODO not sure about UTC??
     df.index = pd.to_datetime(df.index, utc=True)
     return df
@@ -81,6 +93,7 @@ def dataframe():
     entries = from_orgmode()
     return make_dataframe(entries)
 
+
 # TODO move to a submodule? e.g. my.body.weight.orgmode?
 # so there could be more sources
 # not sure about my.body thing though

my/books/kobo.py

@@ -1,7 +1,6 @@
-from ..core import warnings
+from my.core import warnings
 
 warnings.high('my.books.kobo is deprecated! Please use my.kobo instead!')
 
-from ..core.util import __NOT_HPI_MODULE__
-
-from ..kobo import *  # type: ignore[no-redef]
+from my.core.util import __NOT_HPI_MODULE__
+from my.kobo import *

my/browser/active_browser.py

@@ -1,12 +1,13 @@
 """
-Parses active browser history by backing it up with [[http://github.com/seanbreckenridge/sqlite_backup][sqlite_backup]]
+Parses active browser history by backing it up with [[http://github.com/purarue/sqlite_backup][sqlite_backup]]
 """
 
 REQUIRES = ["browserexport", "sqlite_backup"]
 
+from dataclasses import dataclass
 
 from my.config import browser as user_config
-from my.core import Paths, dataclass
+from my.core import Paths
 
 
 @dataclass
@@ -18,16 +19,19 @@ class config(user_config.active_browser):
     export_path: Paths
 
 
+from collections.abc import Iterator, Sequence
 from pathlib import Path
-from typing import Sequence, Iterator
 
-from my.core import get_files, Stats
-from browserexport.merge import read_visits, Visit
+from browserexport.merge import Visit, read_visits
 from sqlite_backup import sqlite_backup
 
+from my.core import Stats, get_files, make_logger
+
+logger = make_logger(__name__)
+
 from .common import _patch_browserexport_logs
 
-_patch_browserexport_logs()
+_patch_browserexport_logs(logger.level)
 
 
 def inputs() -> Sequence[Path]:

my/browser/all.py

@@ -1,9 +1,9 @@
-from typing import Iterator
+from collections.abc import Iterator
+
+from browserexport.merge import Visit, merge_visits
 
 from my.core import Stats
 from my.core.source import import_source
-from browserexport.merge import merge_visits, Visit
-
 
 src_export = import_source(module_name="my.browser.export")
 src_active = import_source(module_name="my.browser.active_browser")

my/browser/common.py

@@ -1,11 +1,8 @@
-import os
 from my.core.util import __NOT_HPI_MODULE__
 
 
-def _patch_browserexport_logs():
-    # patch browserexport logs if HPI_LOGS is present
-    if "HPI_LOGS" in os.environ:
+def _patch_browserexport_logs(level: int):
+    # grab the computed level (respects LOGGING_LEVEL_ prefixes) and set it on the browserexport logger
     from browserexport.log import setup as setup_browserexport_logger
-        from my.core.logging import mklevel
 
-        setup_browserexport_logger(mklevel(os.environ["HPI_LOGS"]))
+    setup_browserexport_logger(level)

my/browser/export.py

@@ -1,33 +1,37 @@
 """
-Parses browser history using [[http://github.com/seanbreckenridge/browserexport][browserexport]]
+Parses browser history using [[http://github.com/purarue/browserexport][browserexport]]
 """
 
 REQUIRES = ["browserexport"]
 
-from my.config import browser as user_config
-from my.core import Paths, dataclass
+from collections.abc import Iterator, Sequence
+from dataclasses import dataclass
+from pathlib import Path
+
+from browserexport.merge import Visit, read_and_merge
+
+from my.core import (
+    Paths,
+    Stats,
+    get_files,
+    make_logger,
+    stat,
+)
+from my.core.cachew import mcachew
+
+from .common import _patch_browserexport_logs
+
+import my.config  # isort: skip
 
 
 @dataclass
-class config(user_config.export):
+class config(my.config.browser.export):
     # path[s]/glob to your backed up browser history sqlite files
     export_path: Paths
 
 
-from pathlib import Path
-from typing import Iterator, Sequence, List
-
-from my.core import Stats, get_files, LazyLogger
-from my.core.common import mcachew
-
-from browserexport.merge import read_and_merge, Visit
-
-from .common import _patch_browserexport_logs
-
-
-logger = LazyLogger(__name__, level="warning")
-
-_patch_browserexport_logs()
+logger = make_logger(__name__)
+_patch_browserexport_logs(logger.level)
 
 
 # all of my backed up databases
@@ -35,16 +39,10 @@ def inputs() -> Sequence[Path]:
     return get_files(config.export_path)
 
 
-def _cachew_depends_on() -> List[str]:
-    return [str(f) for f in inputs()]
-
-
-@mcachew(depends_on=_cachew_depends_on, logger=logger)
+@mcachew(depends_on=inputs, logger=logger)
 def history() -> Iterator[Visit]:
     yield from read_and_merge(inputs())
 
 
 def stats() -> Stats:
-    from my.core import stat
-
     return {**stat(history)}

my/bumble/android.py

@@ -3,24 +3,24 @@ Bumble data from Android app database (in =/data/data/com.bumble.app/databases/C
 """
 from __future__ import annotations
 
+from collections.abc import Iterator, Sequence
 from dataclasses import dataclass
 from datetime import datetime
-from typing import Iterator, Sequence, Optional, Dict
+from pathlib import Path
 
 from more_itertools import unique_everseen
 
-from my.config import bumble as user_config
+from my.core import Paths, get_files
+
+from my.config import bumble as user_config  # isort: skip
 
 
-from ..core import Paths
 @dataclass
 class config(user_config.android):
     # paths[s]/glob to the exported sqlite databases
     export_path: Paths
 
 
-from ..core import get_files
-from pathlib import Path
 def inputs() -> Sequence[Path]:
     return get_files(config.export_path)
 
@@ -43,20 +43,23 @@ class _BaseMessage:
 @dataclass(unsafe_hash=True)
 class _Message(_BaseMessage):
     conversation_id: str
-    reply_to_id: Optional[str]
+    reply_to_id: str | None
 
 
 @dataclass(unsafe_hash=True)
 class Message(_BaseMessage):
     person: Person
-    reply_to: Optional[Message]
+    reply_to: Message | None
 
 
 import json
-from typing import Union
-from ..core import Res, assert_never
 import sqlite3
-from ..core.sqlite import sqlite_connect_immutable, select
+from typing import Union
+
+from my.core.compat import assert_never
+
+from ..core import Res
+from ..core.sqlite import select, sqlite_connect_immutable
 
 EntitiesRes = Res[Union[Person, _Message]]
 
@@ -89,7 +92,7 @@ def _handle_db(db: sqlite3.Connection) -> Iterator[EntitiesRes]:
             db=db
     ):
         try:
-            key = {'TEXT': 'text', 'QUESTION_GAME': 'text', 'IMAGE': 'url', 'GIF': 'url'}[payload_type]
+            key = {'TEXT': 'text', 'QUESTION_GAME': 'text', 'IMAGE': 'url', 'GIF': 'url', 'AUDIO': 'url', 'VIDEO': 'url'}[payload_type]
             text = json.loads(payload)[key]
             yield _Message(
                 id=id,
@@ -106,17 +109,21 @@ def _handle_db(db: sqlite3.Connection) -> Iterator[EntitiesRes]:
 
 def _key(r: EntitiesRes):
     if isinstance(r, _Message):
-        if '&srv_width=' in r.text:
+        if '/hidden?' in r.text:
             # ugh. seems that image URLs change all the time in the db?
             # can't access them without login anyway
             # so use a different key for such messages
+            # todo maybe normalize text instead? since it's gonna always trigger diffs down the line
             return (r.id, r.created)
     return r
 
 
+_UNKNOWN_PERSON = "UNKNOWN_PERSON"
+
+
 def messages() -> Iterator[Res[Message]]:
-    id2person: Dict[str, Person] = {}
-    id2msg: Dict[str, Message] = {}
+    id2person: dict[str, Person] = {}
+    id2msg: dict[str, Message] = {}
     for x in unique_everseen(_entities(), key=_key):
         if isinstance(x, Exception):
             yield x
@@ -126,8 +133,12 @@ def messages() -> Iterator[Res[Message]]:
             continue
         if isinstance(x, _Message):
             reply_to_id = x.reply_to_id
+            # hmm seems that sometimes there are messages with no corresponding conversation_info?
+            # possibly if user never clicked on conversation before..
+            person = id2person.get(x.conversation_id)
+            if person is None:
+                person = Person(user_id=x.conversation_id, user_name=_UNKNOWN_PERSON)
             try:
-                person = id2person[x.conversation_id]
                 reply_to = None if reply_to_id is None else id2msg[reply_to_id]
             except Exception as e:
                 yield e

my/calendar/holidays.py

@@ -9,16 +9,18 @@ from datetime import date, datetime, timedelta
 from functools import lru_cache
 from typing import Union
 
-from ..core.time import zone_to_countrycode
+from my.core import Stats
+from my.core.time import zone_to_countrycode
 
 
 @lru_cache(1)
 def _calendar():
     from workalendar.registry import registry  # type: ignore
+
     # todo switch to using time.tz.main once _get_tz stabilizes?
     from ..time.tz import via_location as LTZ
     # TODO would be nice to do it dynamically depending on the past timezones...
-    tz = LTZ._get_tz(datetime.now())
+    tz = LTZ.get_tz(datetime.now())
     assert tz is not None
     zone = tz.zone; assert zone is not None
     code = zone_to_countrycode(zone)
@@ -46,7 +48,6 @@ def is_workday(d: DateIsh) -> bool:
     return not is_holiday(d)
 
 
-from ..core.common import Stats
 def stats() -> Stats:
     # meh, but not sure what would be a better test?
     res = {}

my/cfg.py

@@ -1,7 +1,6 @@
 import my.config as config
 
 from .core import __NOT_HPI_MODULE__
-
 from .core import warnings as W
 
 # still used in Promnesia, maybe in dashboard?

my/codeforces.py

@@ -0,0 +1,78 @@
+import json
+from collections.abc import Iterator, Sequence
+from dataclasses import dataclass
+from datetime import datetime, timezone
+from functools import cached_property
+from pathlib import Path
+
+from my.config import codeforces as config  # type: ignore[attr-defined]
+from my.core import Res, datetime_aware, get_files
+
+
+def inputs() -> Sequence[Path]:
+    return get_files(config.export_path)
+
+
+ContestId = int
+
+
+@dataclass
+class Contest:
+    contest_id: ContestId
+    when: datetime_aware
+    name: str
+
+
+@dataclass
+class Competition:
+    contest: Contest
+    old_rating: int
+    new_rating: int
+
+    @cached_property
+    def when(self) -> datetime_aware:
+        return self.contest.when
+
+
+# todo not sure if parser is the best name? hmm
+class Parser:
+    def __init__(self, *, inputs: Sequence[Path]) -> None:
+        self.inputs = inputs
+        self.contests: dict[ContestId, Contest] = {}
+
+    def _parse_allcontests(self, p: Path) -> Iterator[Contest]:
+        j = json.loads(p.read_text())
+        for c in j['result']:
+            yield Contest(
+                contest_id=c['id'],
+                when=datetime.fromtimestamp(c['startTimeSeconds'], tz=timezone.utc),
+                name=c['name'],
+            )
+
+    def _parse_competitions(self, p: Path) -> Iterator[Competition]:
+        j = json.loads(p.read_text())
+        for c in j['result']:
+            contest_id = c['contestId']
+            contest = self.contests[contest_id]
+            yield Competition(
+                contest=contest,
+                old_rating=c['oldRating'],
+                new_rating=c['newRating'],
+            )
+
+    def parse(self) -> Iterator[Res[Competition]]:
+        for path in inputs():
+            if 'allcontests' in path.name:
+                # these contain information about all CF contests along with useful metadata
+                for contest in self._parse_allcontests(path):
+                    # TODO some method to assert on mismatch if it exists? not sure
+                    self.contests[contest.contest_id] = contest
+            elif 'codeforces' in path.name:
+                # these contain only contests the user participated in
+                yield from self._parse_competitions(path)
+            else:
+                raise RuntimeError(f"shouldn't happen: {path.name}")
+
+
+def data() -> Iterator[Res[Competition]]:
+    return Parser(inputs=inputs()).parse()

my/coding/codeforces.py

@@ -1,92 +0,0 @@
-#!/usr/bin/env python3
-from my.config import codeforces as config  # type: ignore[attr-defined]
-
-
-from datetime import datetime, timezone
-from typing import NamedTuple
-import json
-from typing import Dict, Iterator
-
-
-from ..core import get_files, Res, unwrap
-from ..core.compat import cached_property
-from ..core.konsume import ignore, wrap
-
-
-Cid = int
-
-class Contest(NamedTuple):
-    cid: Cid
-    when: datetime
-
-    @classmethod
-    def make(cls, j) -> 'Contest':
-        return cls(
-            cid=j['id'],
-            when=datetime.fromtimestamp(j['startTimeSeconds'], tz=timezone.utc),
-        )
-
-Cmap = Dict[Cid, Contest]
-
-
-def get_contests() -> Cmap:
-    last = max(get_files(config.export_path, 'allcontests*.json'))
-    j = json.loads(last.read_text())
-    d = {}
-    for c in j['result']:
-        cc = Contest.make(c)
-        d[cc.cid] = cc
-    return d
-
-
-class Competition(NamedTuple):
-    contest_id: Cid
-    contest: str
-    cmap: Cmap
-
-    @cached_property
-    def uid(self) -> Cid:
-        return self.contest_id
-
-    def __hash__(self):
-        return hash(self.contest_id)
-
-    @cached_property
-    def when(self) -> datetime:
-        return self.cmap[self.uid].when
-
-    @cached_property
-    def summary(self) -> str:
-        return f'participated in {self.contest}' # TODO 
-
-    @classmethod
-    def make(cls, cmap, json) -> Iterator[Res['Competition']]:
-        # TODO try here??
-        contest_id = json['contestId'].zoom().value
-        contest = json['contestName'].zoom().value
-        yield cls(
-            contest_id=contest_id,
-            contest=contest,
-            cmap=cmap,
-        )
-        # TODO ytry???
-        ignore(json, 'rank', 'oldRating', 'newRating')
-
-
-def iter_data() -> Iterator[Res[Competition]]:
-    cmap = get_contests()
-    last = max(get_files(config.export_path, 'codeforces*.json'))
-
-    with wrap(json.loads(last.read_text())) as j:
-        j['status'].ignore()
-        res = j['result'].zoom()
-
-        for c in list(res): # TODO maybe we want 'iter' method??
-            ignore(c, 'handle', 'ratingUpdateTimeSeconds')
-            yield from Competition.make(cmap=cmap, json=c)
-            c.consume()
-            # TODO maybe if they are all empty, no need to consume??
-
-
-def get_data():
-    return list(sorted(iter_data(), key=Competition.when.fget))

my/coding/commits.py

@@ -1,30 +1,32 @@
 """
 Git commits data for repositories on your filesystem
 """
+
+from __future__ import annotations
+
 REQUIRES = [
     'gitpython',
 ]
 
-
 import shutil
-from pathlib import Path
-from datetime import datetime, timezone
+from collections.abc import Iterator, Sequence
 from dataclasses import dataclass, field
-from typing import List, Optional, Iterator, Set, Sequence, cast
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Optional, cast
 
-
-from my.core import PathIsh, LazyLogger, make_config
-from my.core.cachew import cache_dir
-from my.core.common import mcachew
+from my.core import LazyLogger, PathIsh, make_config
+from my.core.cachew import cache_dir, mcachew
 from my.core.warnings import high
 
+from my.config import commits as user_config  # isort: skip
+
 
-from my.config import commits as user_config
 @dataclass
 class commits_cfg(user_config):
     roots: Sequence[PathIsh] = field(default_factory=list)
-    emails: Optional[Sequence[str]] = None
-    names: Optional[Sequence[str]] = None
+    emails: Sequence[str] | None = None
+    names: Sequence[str] | None = None
 
 
 # experiment to make it lazy?
@@ -38,9 +40,8 @@ def config() -> commits_cfg:
 
 ##########################
 
-import git # type: ignore
-from git.repo.fun import is_git_dir # type: ignore
-
+import git
+from git.repo.fun import is_git_dir
 
 log = LazyLogger(__name__, level='info')
 
@@ -94,7 +95,7 @@ def _git_root(git_dir: PathIsh) -> Path:
         return gd # must be bare
 
 
-def _repo_commits_aux(gr: git.Repo, rev: str, emitted: Set[str]) -> Iterator[Commit]:
+def _repo_commits_aux(gr: git.Repo, rev: str, emitted: set[str]) -> Iterator[Commit]:
     # without path might not handle pull heads properly
     for c in gr.iter_commits(rev=rev):
         if not by_me(c):
@@ -121,7 +122,7 @@ def _repo_commits_aux(gr: git.Repo, rev: str, emitted: Set[str]) -> Iterator[Com
 
 def repo_commits(repo: PathIsh):
     gr = git.Repo(str(repo))
-    emitted: Set[str] = set()
+    emitted: set[str] = set()
     for r in gr.references:
         yield from _repo_commits_aux(gr=gr, rev=r.path, emitted=emitted)
 
@@ -142,56 +143,56 @@ def canonical_name(repo: Path) -> str:
 
 def _fd_path() -> str:
     # todo move it to core
-    fd_path: Optional[str] = shutil.which("fdfind") or shutil.which("fd-find") or shutil.which("fd")
+    fd_path: str | None = shutil.which("fdfind") or shutil.which("fd-find") or shutil.which("fd")
     if fd_path is None:
         high("my.coding.commits requires 'fd' to be installed, See https://github.com/sharkdp/fd#installation")
     assert fd_path is not None
     return fd_path
 
 
-def git_repos_in(roots: List[Path]) -> List[Path]:
+def git_repos_in(roots: list[Path]) -> list[Path]:
     from subprocess import check_output
     outputs = check_output([
         _fd_path(),
         # '--follow', # right, not so sure about follow... make configurable?
         '--hidden',
+        '--no-ignore',  # otherwise doesn't go inside .git directory (from fd v9)
         '--full-path',
         '--type', 'f',
         '/HEAD', # judging by is_git_dir, it should always be here..
         *roots,
     ]).decode('utf8').splitlines()
 
-    candidates = set(Path(o).resolve().absolute().parent for o in outputs)
+    candidates = {Path(o).resolve().absolute().parent for o in outputs}
 
     # exclude stuff within .git dirs (can happen for submodules?)
     candidates = {c for c in candidates if '.git' not in c.parts[:-1]}
 
     candidates = {c for c in candidates if is_git_dir(c)}
 
-    repos = list(sorted(map(_git_root, candidates)))
+    repos = sorted(map(_git_root, candidates))
     return repos
 
 
-def repos() -> List[Path]:
+def repos() -> list[Path]:
     return git_repos_in(list(map(Path, config().roots)))
 
 
 # returns modification time for an index to use as hash function
 def _repo_depends_on(_repo: Path) -> int:
-    for pp in {
+    for pp in [
         ".git/FETCH_HEAD",
         ".git/HEAD",
         "FETCH_HEAD",  # bare
         "HEAD",  # bare
-    }:
+    ]:
         ff = _repo / pp
         if ff.exists():
             return int(ff.stat().st_mtime)
-    else:
     raise RuntimeError(f"Could not find a FETCH_HEAD/HEAD file in {_repo}")
 
 
-def _commits(_repos: List[Path]) -> Iterator[Commit]:
+def _commits(_repos: list[Path]) -> Iterator[Commit]:
     for r in _repos:
         yield from _cached_commits(r)
 

my/coding/github.py

@@ -1,9 +1,12 @@
-import warnings
+from typing import TYPE_CHECKING
 
-warnings.warn('my.coding.github is deprecated! Please use my.github.all instead!')
+from my.core import warnings
+
+warnings.high('my.coding.github is deprecated! Please use my.github.all instead!')
 # todo why aren't DeprecationWarning shown by default??
 
-from ..github.all import events, get_events
+if not TYPE_CHECKING:
+    from ..github.all import events, get_events  # noqa: F401
 
     # todo deprecate properly
     iter_events = events

my/coding/topcoder.py

@@ -1,84 +0,0 @@
-#!/usr/bin/env python3
-from my.config import topcoder as config  # type: ignore[attr-defined]
-
-
-from datetime import datetime
-from typing import NamedTuple
-import json
-from typing import Dict, Iterator
-
-
-from ..core import get_files, Res, unwrap, Json
-from ..core.compat import cached_property
-from ..core.error import Res, unwrap
-from ..core.konsume import zoom, wrap, ignore
-
-
-def _get_latest() -> Json:
-    pp = max(get_files(config.export_path))
-    return json.loads(pp.read_text())
-
-
-class Competition(NamedTuple):
-    contest_id: str
-    contest: str
-    percentile: float
-    dates: str
-
-    @cached_property
-    def uid(self) -> str:
-        return self.contest_id
-
-    def __hash__(self):
-        return hash(self.contest_id)
-
-    @cached_property
-    def when(self) -> datetime:
-        return datetime.strptime(self.dates, '%Y-%m-%dT%H:%M:%S.%fZ')
-
-    @cached_property
-    def summary(self) -> str:
-        return f'participated in {self.contest}: {self.percentile:.0f}'
-
-    @classmethod
-    def make(cls, json) -> Iterator[Res['Competition']]:
-        ignore(json, 'rating', 'placement')
-        cid = json['challengeId'].zoom().value
-        cname = json['challengeName'].zoom().value
-        percentile = json['percentile'].zoom().value
-        dates = json['date'].zoom().value
-        yield cls(
-            contest_id=cid,
-            contest=cname,
-            percentile=percentile,
-            dates=dates,
-        )
-
-
-def iter_data() -> Iterator[Res[Competition]]:
-    with wrap(_get_latest()) as j:
-        ignore(j, 'id', 'version')
-
-        res = j['result'].zoom()
-        ignore(res, 'success', 'status', 'metadata')
-
-        cont = res['content'].zoom()
-        ignore(cont, 'handle', 'handleLower', 'userId', 'createdAt', 'updatedAt', 'createdBy', 'updatedBy')
-
-        cont['DEVELOP'].ignore() # TODO handle it??
-        ds = cont['DATA_SCIENCE'].zoom()
-
-        mar, srm = zoom(ds, 'MARATHON_MATCH', 'SRM')
-
-        mar = mar['history'].zoom()
-        srm = srm['history'].zoom()
-    # TODO right, I guess I could rely on pylint for unused variables??
-
-        for c in mar + srm:
-            yield from Competition.make(json=c)
-            c.consume()
-
-
-def get_data():
-    return list(sorted(iter_data(), key=Competition.when.fget))
-

my/common.py

@@ -1,6 +1,6 @@
 from .core.warnings import high
+
 high("DEPRECATED! Please use my.core.common instead.")
 
 from .core import __NOT_HPI_MODULE__
-
 from .core.common import *

my/config.py

@@ -9,17 +9,18 @@ This file is used for:
 - mypy: this file provides some type annotations
 - for loading the actual user config
 '''
+
+from __future__ import annotations
+
 #### NOTE: you won't need this line VVVV in your personal config
-from my.core import init
+from my.core import init  # noqa: F401  # isort: skip
 ###
 
 
 from datetime import tzinfo
 from pathlib import Path
-from typing import List
 
-
-from my.core import Paths, PathIsh
+from my.core import PathIsh, Paths
 
 
 class hypothesis:
@@ -68,27 +69,45 @@ class pinboard:
     export_dir: Paths = ''
 
 class google:
+    class maps:
+        class android:
+            export_path: Paths = ''
+
     takeout_path: Paths = ''
 
 
-from typing import Sequence, Union, Tuple
-from datetime import datetime, date
+from collections.abc import Sequence
+from datetime import date, datetime, timedelta
+from typing import Union
+
 DateIsh = Union[datetime, date, str]
-LatLon = Tuple[float, float]
+LatLon = tuple[float, float]
 class location:
     # todo ugh, need to think about it... mypy wants the type here to be general, otherwise it can't deduce
     # and we can't import the types from the module itself, otherwise would be circular. common module?
-    home: Union[LatLon, Sequence[Tuple[DateIsh, LatLon]]] = (1.0, -1.0)
+    home: LatLon | Sequence[tuple[DateIsh, LatLon]] = (1.0, -1.0)
+    home_accuracy = 30_000.0
 
     class via_ip:
         accuracy: float
+        for_duration: timedelta
 
     class gpslogger:
         export_path: Paths = ''
         accuracy: float
 
+    class google_takeout_semantic:
+        # a value between 0 and 100, 100 being the most confident
+        # set to 0 to include all locations
+        # https://locationhistoryformat.com/reference/semantic/#/$defs/placeVisit/properties/locationConfidence
+        require_confidence: float = 40
+        # default accuracy for semantic locations
+        accuracy: float = 100
+
+
+from typing import Literal
+
 
-from my.core.compat import Literal
 class time:
     class tz:
         policy: Literal['keep', 'convert', 'throw']
@@ -107,10 +126,9 @@ class arbtt:
     logfiles: Paths
 
 
-from typing import Optional
 class commits:
-    emails: Optional[Sequence[str]]
-    names: Optional[Sequence[str]]
+    emails: Sequence[str] | None
+    names: Sequence[str] | None
     roots: Sequence[PathIsh]
 
 
@@ -136,6 +154,9 @@ class tinder:
 class instagram:
     class android:
         export_path: Paths
+        username: str | None
+        full_name: str | None
+
     class gdpr:
         export_path: Paths
 
@@ -152,7 +173,7 @@ class materialistic:
 class fbmessenger:
     class fbmessengerexport:
         export_db: PathIsh
-        facebook_id: Optional[str]
+        facebook_id: str | None
     class android:
         export_path: Paths
 
@@ -164,6 +185,8 @@ class twitter_archive:
 class twitter:
     class talon:
         export_path: Paths
+    class android:
+        export_path: Paths
 
 
 class twint:
@@ -194,6 +217,7 @@ class simple:
 
 class vk_messages_backup:
     storage_path: Path
+    user_id: int
 
 
 class kobo:
@@ -227,7 +251,7 @@ class runnerup:
 class emfit:
     export_path: Path
     timezone: tzinfo
-    excluded_sids: List[str]
+    excluded_sids: list[str]
 
 
 class foursquare:
@@ -247,5 +271,16 @@ class roamresearch:
     username: str
 
 
+class whatsapp:
+    class android:
+        export_path: Paths
+        my_user_id: str | None
 
 
+class harmonic:
+    export_path: Paths
+
+
+class monzo:
+    class monzoexport:
+        export_path: Paths

my/core/__init__.py

@@ -1,39 +1,61 @@
 # this file only keeps the most common & critical types/utility functions
-from .common import get_files, PathIsh, Paths
-from .common import Json
-from .common import LazyLogger
-from .common import warn_if_empty
-from .common import stat, Stats
-from .common import datetime_naive, datetime_aware
-from .common import assert_never
+from typing import TYPE_CHECKING
 
 from .cfg import make_config
-
+from .common import PathIsh, Paths, get_files
+from .compat import assert_never
+from .error import Res, notnone, unwrap
+from .logging import (
+    make_logger,
+)
+from .stats import Stats, stat
+from .types import (
+    Json,
+    datetime_aware,
+    datetime_naive,
+)
 from .util import __NOT_HPI_MODULE__
+from .utils.itertools import warn_if_empty
 
-from .error import Res, unwrap
+LazyLogger = make_logger  # TODO deprecate this in favor of make_logger
 
 
-# just for brevity in modules
-# todo not sure about these.. maybe best to rely on regular imports.. perhaps compare?
+if not TYPE_CHECKING:
+    # we used to keep these here for brevity, but feels like it only adds confusion,
+    #  e.g. suggest that we perhaps somehow modify builtin behaviour or whatever
+    #  so best to prefer explicit behaviour
     from dataclasses import dataclass
     from pathlib import Path
 
 
 __all__ = [
-    'get_files', 'PathIsh', 'Paths',
-    'Json',
-    'LazyLogger',
-    'warn_if_empty',
-    'stat', 'Stats',
-    'datetime_aware', 'datetime_naive',
-    'assert_never',
-
-    'make_config',
-
     '__NOT_HPI_MODULE__',
-
-    'Res', 'unwrap',
-
-    'dataclass', 'Path',
+    'Json',
+    'LazyLogger',  # legacy import
+    'Path',
+    'PathIsh',
+    'Paths',
+    'Res',
+    'Stats',
+    'assert_never',  # TODO maybe deprecate from use in my.core? will be in stdlib soon
+    'dataclass',
+    'datetime_aware',
+    'datetime_naive',
+    'get_files',
+    'make_config',
+    'make_logger',
+    'notnone',
+    'stat',
+    'unwrap',
+    'warn_if_empty',
 ]
+
+
+## experimental for now
+# you could put _init_hook.py next to your private my/config
+# that way you can configure logging/warnings/env variables on every HPI import
+try:
+    import my._init_hook  # type: ignore[import-not-found]  # noqa: F401
+except:
+    pass
+##

my/core/__main__.py

@@ -1,23 +1,26 @@
-from contextlib import ExitStack
+from __future__ import annotations
+
 import functools
 import importlib
 import inspect
-from itertools import chain
 import os
 import shlex
 import shutil
 import sys
 import tempfile
 import traceback
-from typing import Optional, Sequence, Iterable, List, Type, Any, Callable
+from collections.abc import Iterable, Sequence
+from contextlib import ExitStack
+from itertools import chain
 from pathlib import Path
-from subprocess import check_call, run, PIPE, CompletedProcess, Popen
+from subprocess import PIPE, CompletedProcess, Popen, check_call, run
+from typing import Any, Callable
 
 import click
 
 
-@functools.lru_cache()
-def mypy_cmd() -> Optional[Sequence[str]]:
+@functools.lru_cache
+def mypy_cmd() -> Sequence[str] | None:
     try:
         # preferably, use mypy from current python env
         import mypy  # noqa: F401 fine not to use it
@@ -32,7 +35,7 @@ def mypy_cmd() -> Optional[Sequence[str]]:
     return None
 
 
-def run_mypy(cfg_path: Path) -> Optional[CompletedProcess]:
+def run_mypy(cfg_path: Path) -> CompletedProcess | None:
     # todo dunno maybe use the same mypy config in repository?
     # I'd need to install mypy.ini then??
     env = {**os.environ}
@@ -43,7 +46,7 @@ def run_mypy(cfg_path: Path) -> Optional[CompletedProcess]:
     cmd = mypy_cmd()
     if cmd is None:
         return None
-    mres = run([
+    mres = run([  # noqa: UP022,PLW1510
         *cmd,
         '--namespace-packages',
         '--color-output', # not sure if works??
@@ -63,22 +66,28 @@ def eprint(x: str) -> None:
     # err=True prints to stderr
     click.echo(x, err=True)
 
+
 def indent(x: str) -> str:
+    # todo use textwrap.indent?
     return ''.join('   ' + l for l in x.splitlines(keepends=True))
 
 
 OK = '✅'
 OFF = '🔲'
 
+
 def info(x: str) -> None:
     eprint(OK + ' ' + x)
 
+
 def error(x: str) -> None:
     eprint('❌ ' + x)
 
+
 def warning(x: str) -> None:
     eprint('❗ ' + x)  # todo yellow?
 
+
 def tb(e: Exception) -> None:
     tb = ''.join(traceback.format_exception(Exception, e, e.__traceback__))
     sys.stderr.write(indent(tb))
@@ -86,6 +95,7 @@ def tb(e: Exception) -> None:
 
 def config_create() -> None:
     from .preinit import get_mycfg_dir
+
     mycfg_dir = get_mycfg_dir()
 
     created = False
@@ -94,7 +104,8 @@ def config_create() -> None:
         my_config = mycfg_dir / 'my' / 'config' / '__init__.py'
 
         my_config.parent.mkdir(parents=True)
-        my_config.write_text('''
+        my_config.write_text(
+            '''
 ### HPI personal config
 ## see
 # https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#setting-up-modules
@@ -117,7 +128,8 @@ class example:
 
 ### you can insert your own configuration below
 ### but feel free to delete the stuff above if you don't need ti
-'''.lstrip())
+'''.lstrip()
+        )
         info(f'created empty config: {my_config}')
         created = True
     else:
@@ -130,12 +142,13 @@ class example:
 
 # todo return the config as a result?
 def config_ok() -> bool:
-    errors: List[Exception] = []
+    errors: list[Exception] = []
 
     # at this point 'my' should already be imported, so doesn't hurt to extract paths from it
     import my
+
     try:
-        paths: List[str] = list(my.__path__) # type: ignore[attr-defined]
+        paths: list[str] = list(my.__path__)
     except Exception as e:
         errors.append(e)
         error('failed to determine module import path')
@@ -143,21 +156,25 @@ def config_ok() -> bool:
     else:
         info(f'import order: {paths}')
 
-    # first try doing as much as possible without actually imporing my.config
+    # first try doing as much as possible without actually importing my.config
     from .preinit import get_mycfg_dir
+
     cfg_path = get_mycfg_dir()
     # alternative is importing my.config and then getting cfg_path from its __file__/__path__
     # not sure which is better tbh
 
     ## check we're not using stub config
     import my.core
+
     try:
-        core_pkg_path = str(Path(my.core.__path__[0]).parent) # type: ignore[attr-defined]
+        core_pkg_path = str(Path(my.core.__path__[0]).parent)
         if str(cfg_path).startswith(core_pkg_path):
-            error(f'''
+            error(
+                f'''
 Seems that the stub config is used ({cfg_path}). This is likely not going to work.
 See https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#setting-up-modules for more information
-'''.strip())
+'''.strip()
+            )
             errors.append(RuntimeError('bad config path'))
     except Exception as e:
         errors.append(e)
@@ -171,16 +188,15 @@ See https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#setting-up-module
         # use a temporary directory, useful because
         # - compileall ignores -B, so always craps with .pyc files (annoyng on RO filesystems)
         # - compileall isn't following symlinks, just silently ignores them
-        # note: ugh, annoying that copytree requires a non-existing dir before 3.8.
-        # once we have min version 3.8, can use dirs_exist_ok=True param
         tdir = Path(td) / 'cfg'
-        # this will resolve symlinks when copying
-        shutil.copytree(cfg_path, tdir)
         # NOTE: compileall still returns code 0 if the path doesn't exist..
         # but in our case hopefully it's not an issue
         cmd = [sys.executable, '-m', 'compileall', '-q', str(tdir)]
 
         try:
+            # this will resolve symlinks when copying
+            # should be under try/catch since might fail if some symlinks are missing
+            shutil.copytree(cfg_path, tdir, dirs_exist_ok=True)
             check_call(cmd)
             info('syntax check: ' + ' '.join(cmd))
         except Exception as e:
@@ -213,13 +229,15 @@ See https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#setting-up-module
     if len(errors) > 0:
         error(f'config check: {len(errors)} errors')
         return False
-    else:
+
     # note: shouldn't exit here, might run something else
     info('config check: success!')
     return True
 
 
 from .util import HPIModule, modules
+
+
 def _modules(*, all: bool = False) -> Iterable[HPIModule]:
     skipped = []
     for m in modules():
@@ -231,7 +249,7 @@ def _modules(*, all: bool=False) -> Iterable[HPIModule]:
         warning(f'Skipped {len(skipped)} modules: {skipped}. Pass --all if you want to see them.')
 
 
-def modules_check(*, verbose: bool, list_all: bool, quick: bool, for_modules: List[str]) -> None:
+def modules_check(*, verbose: bool, list_all: bool, quick: bool, for_modules: list[str]) -> None:
     if len(for_modules) > 0:
         # if you're checking specific modules, show errors
         # hopefully makes sense?
@@ -242,10 +260,9 @@ def modules_check(*, verbose: bool, list_all: bool, quick: bool, for_modules: Li
 
     import contextlib
 
-    from .common import quick_stats
-    from .util import get_stats, HPIModule
-    from .stats import guess_stats
     from .error import warn_my_config_import_error
+    from .stats import get_stats, quick_stats
+    from .util import HPIModule
 
     mods: Iterable[HPIModule]
     if len(for_modules) == 0:
@@ -267,7 +284,7 @@ def modules_check(*, verbose: bool, list_all: bool, quick: bool, for_modules: Li
             # todo more specific command?
             error(f'{click.style("FAIL", fg="red")}: {m:<50} loading failed{vw}')
             # check that this is an import error in particular, not because
-            # of a ModuleNotFoundError because some dependency wasnt installed
+            # of a ModuleNotFoundError because some dependency wasn't installed
             if isinstance(e, (ImportError, AttributeError)):
                 warn_my_config_import_error(e)
             if verbose:
@@ -275,11 +292,8 @@ def modules_check(*, verbose: bool, list_all: bool, quick: bool, for_modules: Li
             continue
 
         info(f'{click.style("OK", fg="green")}  : {m:<50}')
-        # first try explicitly defined stats function:
-        stats = get_stats(m)
-        if stats is None:
-            # then try guessing.. not sure if should log somehow?
-            stats = guess_stats(m, quick=quick)
+        # TODO add hpi 'stats'? instead of doctor? not sure
+        stats = get_stats(m, guess=True)
 
         if stats is None:
             eprint("       - no 'stats' function, can't check the data")
@@ -290,6 +304,7 @@ def modules_check(*, verbose: bool, list_all: bool, quick: bool, for_modules: Li
 
         try:
             kwargs = {}
+            # todo hmm why wouldn't they be callable??
             if callable(stats) and 'quick' in inspect.signature(stats).parameters:
                 kwargs['quick'] = quick
             with quick_context:
@@ -325,17 +340,20 @@ def tabulate_warnings() -> None:
     Helper to avoid visual noise in hpi modules/doctor
     '''
     import warnings
+
     orig = warnings.formatwarning
 
     def override(*args, **kwargs) -> str:
         res = orig(*args, **kwargs)
         return ''.join('  ' + x for x in res.splitlines(keepends=True))
+
     warnings.formatwarning = override
     # TODO loggers as well?
 
 
 def _requires(modules: Sequence[str]) -> Sequence[str]:
     from .discovery_pure import module_by_name
+
     mods = [module_by_name(module) for module in modules]
     res = []
     for mod in mods:
@@ -362,7 +380,7 @@ def module_requires(*, module: Sequence[str]) -> None:
         click.echo(x)
 
 
-def module_install(*, user: bool, module: Sequence[str], parallel: bool=False) -> None:
+def module_install(*, user: bool, module: Sequence[str], parallel: bool = False, break_system_packages: bool = False) -> None:
     if isinstance(module, str):
         # legacy behavior, used to take a since argument
         module = [module]
@@ -373,24 +391,30 @@ def module_install(*, user: bool, module: Sequence[str], parallel: bool=False) -
         warning('requirements list is empty, no need to install anything')
         return
 
+    use_uv = 'HPI_MODULE_INSTALL_USE_UV' in os.environ
     pre_cmd = [
-        sys.executable, '-m', 'pip',
+        sys.executable, '-m', *(['uv'] if use_uv else []), 'pip',
         'install',
         *(['--user'] if user else []), # todo maybe instead, forward all the remaining args to pip?
+        *(['--break-system-packages'] if break_system_packages else []), # https://peps.python.org/pep-0668/
     ]
 
     cmds = []
     # disable parallel on windows, sometimes throws a
     # '[WinError 32] The process cannot access the file because it is being used by another process'
-    if parallel and sys.platform not in ['win32', 'cygwin']:
+    # same on mac it seems? possible race conditions which are hard to debug?
+    # WARNING: Error parsing requirements for sqlalchemy: [Errno 2] No such file or directory: '/Users/runner/work/HPI/HPI/.tox/mypy-misc/lib/python3.7/site-packages/SQLAlchemy-2.0.4.dist-info/METADATA'
+    if parallel and sys.platform not in ['win32', 'cygwin', 'darwin']:
         # todo not really sure if it's safe to install in parallel like this
         # but definitely doesn't hurt to experiment for e.g. mypy pipelines
         # pip has '--use-feature=fast-deps', but it doesn't really work
         # I think it only helps for pypi artifacts (not git!),
         # and only if they weren't cached
         for r in requirements:
-            cmds.append(pre_cmd + [r])
+            cmds.append([*pre_cmd, r])
     else:
+        if parallel:
+            warning('parallel install is not supported on this platform, installing sequentially...')
         # install everything in one cmd
         cmds.append(pre_cmd + list(requirements))
 
@@ -433,11 +457,11 @@ def _ui_getchar_pick(choices: Sequence[str], prompt: str = 'Select from: ') -> i
         return result_map[ch]
 
 
-def _locate_functions_or_prompt(qualified_names: List[str], prompt: bool = True) -> Iterable[Callable[..., Any]]:
-    from .query import locate_qualified_function, QueryException
+def _locate_functions_or_prompt(qualified_names: list[str], *, prompt: bool = True) -> Iterable[Callable[..., Any]]:
+    from .query import QueryException, locate_qualified_function
     from .stats import is_data_provider
 
-    # if not connected to a terminal, cant prompt
+    # if not connected to a terminal, can't prompt
     if not sys.stdout.isatty():
         prompt = False
 
@@ -451,9 +475,9 @@ def _locate_functions_or_prompt(qualified_names: List[str], prompt: bool = True)
             # user to select a 'data provider' like function
             try:
                 mod = importlib.import_module(qualname)
-            except Exception:
+            except Exception as ie:
                 eprint(f"During fallback, importing '{qualname}' as module failed")
-                raise qr_err
+                raise qr_err from ie
 
             # find data providers in this module
             data_providers = [f for _, f in inspect.getmembers(mod, inspect.isfunction) if is_data_provider(f)]
@@ -467,7 +491,7 @@ def _locate_functions_or_prompt(qualified_names: List[str], prompt: bool = True)
                 else:
                     choices = [f.__name__ for f in data_providers]
                     if prompt is False:
-                        # theres more than one possible data provider in this module,
+                        # there's more than one possible data provider in this module,
                         # STDOUT is not a TTY, can't prompt
                         eprint("During fallback, more than one possible data provider, can't prompt since STDOUT is not a TTY")
                         eprint("Specify one of:")
@@ -481,30 +505,42 @@ def _locate_functions_or_prompt(qualified_names: List[str], prompt: bool = True)
                     yield data_providers[chosen_index]
 
 
+def _warn_exceptions(exc: Exception) -> None:
+    from my.core import make_logger
+
+    logger = make_logger('CLI', level='warning')
+
+    logger.exception(f'hpi query: {exc}')
+
+
 # handle the 'hpi query' call
 # can raise a QueryException, caught in the click command
 def query_hpi_functions(
     *,
     output: str = 'json',
     stream: bool = False,
-    qualified_names: List[str],
-    order_key: Optional[str],
-    order_by_value_type: Optional[Type],
+    qualified_names: list[str],
+    order_key: str | None,
+    order_by_value_type: type | None,
     after: Any,
     before: Any,
     within: Any,
     reverse: bool = False,
-    limit: Optional[int],
+    limit: int | None,
     drop_unsorted: bool,
     wrap_unsorted: bool,
+    warn_exceptions: bool,
     raise_exceptions: bool,
     drop_exceptions: bool,
 ) -> None:
-    from .query_range import select_range, RangeTuple
+    from .query_range import RangeTuple, select_range
 
     # chain list of functions from user, in the order they wrote them on the CLI
     input_src = chain(*(f() for f in _locate_functions_or_prompt(qualified_names)))
 
+    # NOTE: if passing just one function to this which returns a single namedtuple/dataclass,
+    # using both --order-key and --order-type will often be faster as it does not need to
+    # duplicate the iterator in memory, or try to find the --order-type type on each object before sorting
     res = select_range(
         input_src,
         order_key=order_key,
@@ -514,8 +550,11 @@ def query_hpi_functions(
         limit=limit,
         drop_unsorted=drop_unsorted,
         wrap_unsorted=wrap_unsorted,
+        warn_exceptions=warn_exceptions,
+        warn_func=_warn_exceptions,
         raise_exceptions=raise_exceptions,
-        drop_exceptions=drop_exceptions)
+        drop_exceptions=drop_exceptions,
+    )
 
     if output == 'json':
         from .serialize import dumps
@@ -538,15 +577,35 @@ def query_hpi_functions(
                 pprint(item)
         else:
             pprint(list(res))
+    elif output == 'gpx':
+        from my.location.common import locations_to_gpx
+
+        # if user didn't specify to ignore exceptions, warn if locations_to_gpx
+        # cannot process the output of the command. This can be silenced by
+        # passing --drop-exceptions
+        if not raise_exceptions and not drop_exceptions:
+            warn_exceptions = True
+
+        # can ignore the mypy warning here, locations_to_gpx yields any errors
+        # if you didnt pass it something that matches the LocationProtocol
+        for exc in locations_to_gpx(res, sys.stdout):  # type: ignore[arg-type]
+            if warn_exceptions:
+                _warn_exceptions(exc)
+            elif raise_exceptions:
+                raise exc
+            elif drop_exceptions:
+                pass
+        sys.stdout.flush()
     else:
         res = list(res)  # type: ignore[assignment]
         # output == 'repl'
         eprint(f"\nInteract with the results by using the {click.style('res', fg='green')} variable\n")
         try:
-            import IPython  # type: ignore[import]
+            import IPython  # type: ignore[import,unused-ignore]
         except ModuleNotFoundError:
             eprint("'repl' typically uses ipython, install it with 'python3 -m pip install ipython'. falling back to stdlib...")
             import code
+
             code.interact(local=locals())
         else:
             IPython.embed()
@@ -554,16 +613,16 @@ def query_hpi_functions(
 
 @click.group()
 @click.option("--debug", is_flag=True, default=False, help="Show debug logs")
-def main(debug: bool) -> None:
+def main(*, debug: bool) -> None:
     '''
     Human Programming Interface
 
     Tool for HPI
     Work in progress, will be used for config management, troubleshooting & introspection
     '''
-    # should overwrite anything else in HPI_LOGS
+    # should overwrite anything else in LOGGING_LEVEL_HPI
     if debug:
-        os.environ["HPI_LOGS"] = "debug"
+        os.environ['LOGGING_LEVEL_HPI'] = 'debug'
 
     # for potential future reference, if shared state needs to be added to groups
     # https://click.palletsprojects.com/en/7.x/commands/#group-invocation-without-command
@@ -572,7 +631,7 @@ def main(debug: bool) -> None:
     # acts as a contextmanager of sorts - any subcommand will then run
     # in something like /tmp/hpi_temp_dir
     # to avoid importing relative modules by accident during development
-    # maybe can be removed later if theres more test coverage/confidence that nothing
+    # maybe can be removed later if there's more test coverage/confidence that nothing
     # would happen?
 
     # use a particular directory instead of a random one, since
@@ -580,20 +639,19 @@ def main(debug: bool) -> None:
     # to run things at the end (would need to use a callback or pass context)
     # https://click.palletsprojects.com/en/7.x/commands/#nested-handling-and-contexts
 
-    tdir: str = os.path.join(tempfile.gettempdir(), 'hpi_temp_dir')
-    if not os.path.exists(tdir):
-        os.makedirs(tdir)
+    tdir = Path(tempfile.gettempdir()) / 'hpi_temp_dir'
+    tdir.mkdir(exist_ok=True)
     os.chdir(tdir)
 
 
 @functools.lru_cache(maxsize=1)
-def _all_mod_names() -> List[str]:
+def _all_mod_names() -> list[str]:
     """Should include all modules, in case user is trying to diagnose issues"""
     # sort this, so that the order doesn't change while tabbing through
     return sorted([m.name for m in modules()])
 
 
-def _module_autocomplete(ctx: click.Context, args: Sequence[str], incomplete: str) -> List[str]:
+def _module_autocomplete(ctx: click.Context, args: Sequence[str], incomplete: str) -> list[str]:
     return [m for m in _all_mod_names() if m.startswith(incomplete)]
 
 
@@ -603,7 +661,7 @@ def _module_autocomplete(ctx: click.Context, args: Sequence[str], incomplete: st
 @click.option('-q', '--quick', is_flag=True, help='Only run partial checks (first 100 items)')
 @click.option('-S', '--skip-config-check', 'skip_conf', is_flag=True, help='Skip configuration check')
 @click.argument('MODULE', nargs=-1, required=False, shell_complete=_module_autocomplete)
-def doctor_cmd(verbose: bool, list_all: bool, quick: bool, skip_conf: bool, module: Sequence[str]) -> None:
+def doctor_cmd(*, verbose: bool, list_all: bool, quick: bool, skip_conf: bool, module: Sequence[str]) -> None:
     '''
     Run various checks
 
@@ -637,7 +695,7 @@ def config_create_cmd() -> None:
 
 @main.command(name='modules', short_help='list available modules')
 @click.option('--all', 'list_all', is_flag=True, help='List all modules, including disabled')
-def module_cmd(list_all: bool) -> None:
+def module_cmd(*, list_all: bool) -> None:
     '''List available modules'''
     list_modules(list_all=list_all)
 
@@ -650,7 +708,7 @@ def module_grp() -> None:
 
 @module_grp.command(name='requires', short_help='print module reqs')
 @click.argument('MODULES', shell_complete=_module_autocomplete, nargs=-1, required=True)
-def module_requires_cmd(modules: Sequence[str]) -> None:
+def module_requires_cmd(*, modules: Sequence[str]) -> None:
     '''
     Print MODULES requirements
 
@@ -662,22 +720,26 @@ def module_requires_cmd(modules: Sequence[str]) -> None:
 @module_grp.command(name='install', short_help='install module deps')
 @click.option('--user', is_flag=True, help='same as pip --user')
 @click.option('--parallel', is_flag=True, help='EXPERIMENTAL. Install dependencies in parallel.')
+@click.option('-B',
+              '--break-system-packages',
+              is_flag=True,
+              help='Bypass PEP 668 and install dependencies into the system-wide python package directory.')
 @click.argument('MODULES', shell_complete=_module_autocomplete, nargs=-1, required=True)
-def module_install_cmd(user: bool, parallel: bool, modules: Sequence[str]) -> None:
+def module_install_cmd(*, user: bool, parallel: bool, break_system_packages: bool, modules: Sequence[str]) -> None:
     '''
     Install dependencies for modules using pip
 
     MODULES is one or more specific module names (e.g. my.reddit.rexport)
     '''
     # todo could add functions to check specific module etc..
-    module_install(user=user, module=modules, parallel=parallel)
+    module_install(user=user, module=modules, parallel=parallel, break_system_packages=break_system_packages)
 
 
 @main.command(name='query', short_help='query the results of a HPI function')
 @click.option('-o',
               '--output',
               default='json',
-              type=click.Choice(['json', 'pprint', 'repl']),
+              type=click.Choice(['json', 'pprint', 'repl', 'gpx']),
               help='what to do with the result [default: json]')
 @click.option('-s',
               '--stream',
@@ -730,6 +792,10 @@ def module_install_cmd(user: bool, parallel: bool, modules: Sequence[str]) -> No
               default=False,
               is_flag=True,
               help="if the order of an item can't be determined while ordering, wrap them into an 'Unsortable' object")
+@click.option('--warn-exceptions',
+              default=False,
+              is_flag=True,
+              help="if any errors are returned, print them as errors on STDERR")
 @click.option('--raise-exceptions',
               default=False,
               is_flag=True,
@@ -740,19 +806,21 @@ def module_install_cmd(user: bool, parallel: bool, modules: Sequence[str]) -> No
               help='ignore any errors returned as objects from the functions')
 @click.argument('FUNCTION_NAME', nargs=-1, required=True, shell_complete=_module_autocomplete)
 def query_cmd(
+    *,
     function_name: Sequence[str],
     output: str,
     stream: bool,
-    order_key: Optional[str],
-    order_type: Optional[str],
-    after: Optional[str],
-    before: Optional[str],
-    within: Optional[str],
-    recent: Optional[str],
+    order_key: str | None,
+    order_type: str | None,
+    after: str | None,
+    before: str | None,
+    within: str | None,
+    recent: str | None,
     reverse: bool,
-    limit: Optional[int],
+    limit: int | None,
     drop_unsorted: bool,
     wrap_unsorted: bool,
+    warn_exceptions: bool,
     raise_exceptions: bool,
     drop_exceptions: bool,
 ) -> None:
@@ -780,12 +848,12 @@ def query_cmd(
 
     \b
     Can also query within a range. To filter comments between 2016 and 2018:
-    hpi query --order-type datetime --after '2016-01-01 00:00:00' --before '2019-01-01 00:00:00' my.reddit.all.comments
+    hpi query --order-type datetime --after '2016-01-01' --before '2019-01-01' my.reddit.all.comments
     '''
 
-    from datetime import datetime, date
+    from datetime import date, datetime
 
-    chosen_order_type: Optional[Type]
+    chosen_order_type: type | None
     if order_type == "datetime":
         chosen_order_type = datetime
     elif order_type == "date":
@@ -819,8 +887,10 @@ def query_cmd(
             limit=limit,
             drop_unsorted=drop_unsorted,
             wrap_unsorted=wrap_unsorted,
+            warn_exceptions=warn_exceptions,
             raise_exceptions=raise_exceptions,
-            drop_exceptions=drop_exceptions)
+            drop_exceptions=drop_exceptions,
+        )
     except QueryException as qe:
         eprint(str(qe))
         sys.exit(1)
@@ -835,6 +905,7 @@ def query_cmd(
 
 def test_requires() -> None:
     from click.testing import CliRunner
+
     result = CliRunner().invoke(main, ['module', 'requires', 'my.github.ghexport', 'my.browser.export'])
     assert result.exit_code == 0
     assert "github.com/karlicoss/ghexport" in result.output

my/core/_cpu_pool.py

@@ -0,0 +1,35 @@
+"""
+EXPERIMENTAL! use with caution
+Manages 'global' ProcessPoolExecutor which is 'managed' by HPI itself, and
+can be passed down to DALs to speed up data processing.
+
+The reason to have it managed by HPI is because we don't want DALs instantiate pools
+themselves -- they can't cooperate and it would be hard/infeasible to control
+how many cores we want to dedicate to the DAL.
+
+Enabled by the env variable, specifying how many cores to dedicate
+e.g. "HPI_CPU_POOL=4 hpi query ..."
+"""
+
+from __future__ import annotations
+
+import os
+from concurrent.futures import ProcessPoolExecutor
+from typing import cast
+
+_NOT_SET = cast(ProcessPoolExecutor, object())
+_INSTANCE: ProcessPoolExecutor | None = _NOT_SET
+
+
+def get_cpu_pool() -> ProcessPoolExecutor | None:
+    global _INSTANCE
+    if _INSTANCE is _NOT_SET:
+        use_cpu_pool = os.environ.get('HPI_CPU_POOL')
+        if use_cpu_pool is None or int(use_cpu_pool) == 0:
+            _INSTANCE = None
+        else:
+            # NOTE: this won't be cleaned up properly, but I guess it's fine?
+            # since this it's basically a singleton for the whole process
+            # , and will be destroyed when python exists
+            _INSTANCE = ProcessPoolExecutor(max_workers=int(use_cpu_pool))
+    return _INSTANCE

my/core/_deprecated/dataset.py

@@ -0,0 +1,12 @@
+from ..common import PathIsh
+from ..sqlite import sqlite_connect_immutable
+
+
+def connect_readonly(db: PathIsh):
+    import dataset  # type: ignore
+
+    # see https://github.com/pudo/dataset/issues/136#issuecomment-128693122
+    # todo not sure if mode=ro has any benefit, but it doesn't work on read-only filesystems
+    # maybe it should autodetect readonly filesystems and apply this? not sure
+    creator = lambda: sqlite_connect_immutable(db)
+    return dataset.connect('sqlite:///', engine_kwargs={'creator': creator})

my/core/_deprecated/kompress.py

@@ -0,0 +1,261 @@
+"""
+Various helpers for compression
+"""
+
+# fmt: off
+from __future__ import annotations
+
+import io
+import pathlib
+from collections.abc import Iterator, Sequence
+from datetime import datetime
+from functools import total_ordering
+from pathlib import Path
+from typing import IO, Union
+
+PathIsh = Union[Path, str]
+
+
+class Ext:
+    xz    = '.xz'
+    zip   = '.zip'
+    lz4   = '.lz4'
+    zstd  = '.zstd'
+    zst   = '.zst'
+    targz = '.tar.gz'
+
+
+def is_compressed(p: Path) -> bool:
+    # todo kinda lame way for now.. use mime ideally?
+    # should cooperate with kompress.kopen?
+    return any(p.name.endswith(ext) for ext in [Ext.xz, Ext.zip, Ext.lz4, Ext.zstd, Ext.zst, Ext.targz])
+
+
+def _zstd_open(path: Path, *args, **kwargs) -> IO:
+    import zstandard as zstd  # type: ignore
+    fh = path.open('rb')
+    dctx = zstd.ZstdDecompressor()
+    reader = dctx.stream_reader(fh)
+
+    mode = kwargs.get('mode', 'rt')
+    if mode == 'rb':
+        return reader
+    else:
+        # must be text mode
+        kwargs.pop('mode') # TextIOWrapper doesn't like it
+        return io.TextIOWrapper(reader, **kwargs) # meh
+
+
+# TODO use the 'dependent type' trick for return type?
+def kopen(path: PathIsh, *args, mode: str='rt', **kwargs) -> IO:
+    # just in case, but I think this shouldn't be necessary anymore
+    # since when we call .read_text, encoding is passed already
+    if mode in {'r', 'rt'}:
+        encoding = kwargs.get('encoding', 'utf8')
+    else:
+        encoding = None
+    kwargs['encoding'] = encoding
+
+    pp = Path(path)
+    name = pp.name
+    if name.endswith(Ext.xz):
+        import lzma
+
+        # ugh. for lzma, 'r' means 'rb'
+        # https://github.com/python/cpython/blob/d01cf5072be5511595b6d0c35ace6c1b07716f8d/Lib/lzma.py#L97
+        # whereas for regular open, 'r' means 'rt'
+        # https://docs.python.org/3/library/functions.html#open
+        if mode == 'r':
+            mode = 'rt'
+        kwargs['mode'] = mode
+        return lzma.open(pp, *args, **kwargs)
+    elif name.endswith(Ext.zip):
+        # eh. this behaviour is a bit dodgy...
+        from zipfile import ZipFile
+        zfile = ZipFile(pp)
+
+        [subpath] = args # meh?
+
+        ## oh god... https://stackoverflow.com/a/5639960/706389
+        ifile = zfile.open(subpath, mode='r')
+        ifile.readable = lambda: True  # type: ignore
+        ifile.writable = lambda: False # type: ignore
+        ifile.seekable = lambda: False # type: ignore
+        ifile.read1    = ifile.read    # type: ignore
+        # TODO pass all kwargs here??
+        # todo 'expected "BinaryIO"'??
+        return io.TextIOWrapper(ifile, encoding=encoding)
+    elif name.endswith(Ext.lz4):
+        import lz4.frame  # type: ignore
+        return lz4.frame.open(str(pp), mode, *args, **kwargs)
+    elif name.endswith(Ext.zstd) or name.endswith(Ext.zst):  # noqa: PIE810
+        kwargs['mode'] = mode
+        return _zstd_open(pp, *args, **kwargs)
+    elif name.endswith(Ext.targz):
+        import tarfile
+        # FIXME pass mode?
+        tf = tarfile.open(pp)
+        # TODO pass encoding?
+        x = tf.extractfile(*args); assert x is not None
+        return x
+    else:
+        return pp.open(mode, *args, **kwargs)
+
+
+import os
+import typing
+
+if typing.TYPE_CHECKING:
+    # otherwise mypy can't figure out that BasePath is a type alias..
+    BasePath = pathlib.Path
+else:
+    BasePath = pathlib.WindowsPath if os.name == 'nt' else pathlib.PosixPath
+
+
+class CPath(BasePath):
+    """
+    Hacky way to support compressed files.
+    If you can think of a better way to do this, please let me know! https://github.com/karlicoss/HPI/issues/20
+
+    Ugh. So, can't override Path because of some _flavour thing.
+    Path only has _accessor and _closed slots, so can't directly set .open method
+    _accessor.open has to return file descriptor, doesn't work for compressed stuff.
+    """
+    def open(self, *args, **kwargs):  # noqa: ARG002
+        kopen_kwargs = {}
+        mode = kwargs.get('mode')
+        if mode is not None:
+            kopen_kwargs['mode'] = mode
+        encoding = kwargs.get('encoding')
+        if encoding is not None:
+            kopen_kwargs['encoding'] = encoding
+        # TODO assert read only?
+        return kopen(str(self), **kopen_kwargs)
+
+
+open = kopen # TODO deprecate
+
+
+# meh
+# TODO ideally switch to ZipPath or smth similar?
+# nothing else supports subpath properly anyway
+def kexists(path: PathIsh, subpath: str) -> bool:
+    try:
+        kopen(path, subpath)
+    except Exception:
+        return False
+    else:
+        return True
+
+
+import zipfile
+
+# meh... zipfile.Path is not available on 3.7
+zipfile_Path = zipfile.Path
+
+
+@total_ordering
+class ZipPath(zipfile_Path):
+    # NOTE: is_dir/is_file might not behave as expected, the base class checks it only based on the slash in path
+
+    # seems that root/at are not exposed in the docs, so might be an implementation detail
+    root: zipfile.ZipFile  # type: ignore[assignment]
+    at: str
+
+    @property
+    def filepath(self) -> Path:
+        res = self.root.filename
+        assert res is not None  # make mypy happy
+        return Path(res)
+
+    @property
+    def subpath(self) -> Path:
+        return Path(self.at)
+
+    def absolute(self) -> ZipPath:
+        return ZipPath(self.filepath.absolute(), self.at)
+
+    def expanduser(self) -> ZipPath:
+        return ZipPath(self.filepath.expanduser(), self.at)
+
+    def exists(self) -> bool:
+        if self.at == '':
+            # special case, the base class returns False in this case for some reason
+            return self.filepath.exists()
+        return super().exists() or self._as_dir().exists()
+
+    def _as_dir(self) -> zipfile_Path:
+        # note: seems that zip always uses forward slash, regardless OS?
+        return zipfile_Path(self.root, self.at + '/')
+
+    def rglob(self, glob: str) -> Iterator[ZipPath]:
+        # note: not 100% sure about the correctness, but seem fine?
+        # Path.match() matches from the right, so need to
+        rpaths = [p for p in self.root.namelist() if p.startswith(self.at)]
+        rpaths = [p for p in rpaths if Path(p).match(glob)]
+        return (ZipPath(self.root, p) for p in rpaths)
+
+    def relative_to(self, other: ZipPath) -> Path:  # type: ignore[override, unused-ignore]
+        assert self.filepath == other.filepath, (self.filepath, other.filepath)
+        return self.subpath.relative_to(other.subpath)
+
+    @property
+    def parts(self) -> Sequence[str]:
+        # messy, but might be ok..
+        return self.filepath.parts + self.subpath.parts
+
+    def __truediv__(self, key) -> ZipPath:
+        # need to implement it so the return type is not zipfile.Path
+        tmp = zipfile_Path(self.root) / self.at / key
+        return ZipPath(self.root, tmp.at)
+
+    def iterdir(self) -> Iterator[ZipPath]:
+        for s in self._as_dir().iterdir():
+            yield ZipPath(s.root, s.at)
+
+    @property
+    def stem(self) -> str:
+        return self.subpath.stem
+
+    @property  # type: ignore[misc]
+    def __class__(self):
+        return Path
+
+    def __eq__(self, other) -> bool:
+        # hmm, super class doesn't seem to treat as equals unless they are the same object
+        if not isinstance(other, ZipPath):
+            return False
+        return (self.filepath, self.subpath) == (other.filepath, other.subpath)
+
+    def __lt__(self, other) -> bool:
+        if not isinstance(other, ZipPath):
+            return False
+        return (self.filepath, self.subpath) < (other.filepath, other.subpath)
+
+    def __hash__(self) -> int:
+        return hash((self.filepath, self.subpath))
+
+    def stat(self) -> os.stat_result:
+        # NOTE: zip datetimes have no notion of time zone, usually they just keep local time?
+        # see https://en.wikipedia.org/wiki/ZIP_(file_format)#Structure
+        dt = datetime(*self.root.getinfo(self.at).date_time)
+        ts = int(dt.timestamp())
+        params = dict(  # noqa: C408
+            st_mode=0,
+            st_ino=0,
+            st_dev=0,
+            st_nlink=1,
+            st_uid=1000,
+            st_gid=1000,
+            st_size=0,  # todo compute it properly?
+            st_atime=ts,
+            st_mtime=ts,
+            st_ctime=ts,
+        )
+        return os.stat_result(tuple(params.values()))
+
+    @property
+    def suffix(self) -> str:
+        return Path(self.parts[-1]).suffix
+
+# fmt: on

my/core/cachew.py

@@ -1,8 +1,30 @@
-from .common import assert_subpackage; assert_subpackage(__name__)
+from __future__ import annotations
 
+from .internal import assert_subpackage
+
+assert_subpackage(__name__)
+
+import logging
+import sys
+from collections.abc import Iterator
 from contextlib import contextmanager
 from pathlib import Path
-from typing import Optional
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Callable,
+    TypeVar,
+    Union,
+    cast,
+    overload,
+)
+
+import appdirs  # type: ignore[import-untyped]
+
+from . import warnings
+
+PathIsh = Union[str, Path]  # avoid circular import from .common
+
 
 def disable_cachew() -> None:
     try:
@@ -12,10 +34,10 @@ def disable_cachew() -> None:
         return
 
     from cachew import settings
+
     settings.ENABLE = False
 
 
-from typing import Iterator
 @contextmanager
 def disabled_cachew() -> Iterator[None]:
     try:
@@ -25,23 +47,26 @@ def disabled_cachew() -> Iterator[None]:
         yield
         return
     from cachew.extra import disabled_cachew
+
     with disabled_cachew():
         yield
 
 
 def _appdirs_cache_dir() -> Path:
-    import appdirs # type: ignore
     cd = Path(appdirs.user_cache_dir('my'))
     cd.mkdir(exist_ok=True, parents=True)
     return cd
 
 
-from . import PathIsh
-def cache_dir(suffix: Optional[PathIsh] = None) -> Path:
+_CACHE_DIR_NONE_HACK = Path('/tmp/hpi/cachew_none_hack')
+
+
+def cache_dir(suffix: PathIsh | None = None) -> Path:
     from . import core_config as CC
+
     cdir_ = CC.config.get_cache_dir()
 
-    sp: Optional[Path] = None
+    sp: Path | None = None
     if suffix is not None:
         sp = Path(suffix)
         # guess if you do need absolute, better path it directly instead of as suffix?
@@ -55,9 +80,84 @@ def cache_dir(suffix: Optional[PathIsh] = None) -> Path:
     # this logic is tested via test_cachew_dir_none
 
     if cdir_ is None:
-        from .common import _CACHE_DIR_NONE_HACK
         cdir = _CACHE_DIR_NONE_HACK
     else:
         cdir = cdir_
 
     return cdir if sp is None else cdir / sp
+
+
+"""See core.cachew.cache_dir for the explanation"""
+
+
+_cache_path_dflt = cast(str, object())
+
+
+# TODO I don't really like 'mcachew', just 'cache' would be better... maybe?
+# todo ugh. I think it needs @doublewrap, otherwise @mcachew without args doesn't work
+# but it's a bit problematic.. doublewrap works by defecting if the first arg is callable
+# but here cache_path can also be a callable (for lazy/dynamic path)... so unclear how to detect this
+def _mcachew_impl(cache_path=_cache_path_dflt, **kwargs):
+    """
+    Stands for 'Maybe cachew'.
+    Defensive wrapper around @cachew to make it an optional dependency.
+    """
+    if cache_path is _cache_path_dflt:
+        # wasn't specified... so we need to use cache_dir
+        cache_path = cache_dir()
+
+    if isinstance(cache_path, (str, Path)):
+        try:
+            # check that it starts with 'hack' path
+            Path(cache_path).relative_to(_CACHE_DIR_NONE_HACK)
+        except:  # noqa: E722 bare except
+            pass  # no action needed, doesn't start with 'hack' string
+        else:
+            # todo show warning? tbh unclear how to detect when user stopped using 'old' way and using suffix instead?
+            # if it does, means that user wanted to disable cache
+            cache_path = None
+    try:
+        import cachew
+    except ModuleNotFoundError:
+        warnings.high('cachew library not found. You might want to install it to speed things up. See https://github.com/karlicoss/cachew')
+        return lambda orig_func: orig_func
+    else:
+        kwargs['cache_path'] = cache_path
+        return cachew.cachew(**kwargs)
+
+
+if TYPE_CHECKING:
+    R = TypeVar('R')
+    if sys.version_info[:2] >= (3, 10):
+        from typing import ParamSpec
+    else:
+        from typing_extensions import ParamSpec
+    P = ParamSpec('P')
+    CC = Callable[P, R]  # need to give it a name, if inlined into bound=, mypy runs in a bug
+    PathProvider = Union[PathIsh, Callable[P, PathIsh]]
+    # NOTE: in cachew, HashFunction type returns str
+    # however in practice, cachew always calls str for its result
+    # so perhaps better to switch it to Any in cachew as well
+    HashFunction = Callable[P, Any]
+
+    F = TypeVar('F', bound=Callable)
+
+    # we need two versions due to @doublewrap
+    # this is when we just annotate as @cachew without any args
+    @overload  # type: ignore[no-overload-impl]
+    def mcachew(fun: F) -> F: ...
+
+    @overload
+    def mcachew(
+        cache_path: PathProvider | None = ...,
+        *,
+        force_file: bool = ...,
+        cls: type | None = ...,
+        depends_on: HashFunction = ...,
+        logger: logging.Logger | None = ...,
+        chunk_by: int = ...,
+        synthetic_key: str | None = ...,
+    ) -> Callable[[F], F]: ...
+
+else:
+    mcachew = _mcachew_impl

my/core/cfg.py

@@ -1,32 +1,42 @@
-from typing import TypeVar, Type, Callable, Dict, Any
+from __future__ import annotations
 
-Attrs = Dict[str, Any]
+import importlib
+import re
+import sys
+from collections.abc import Iterator
+from contextlib import ExitStack, contextmanager
+from typing import Any, Callable, TypeVar
+
+Attrs = dict[str, Any]
 
 C = TypeVar('C')
 
+
 # todo not sure about it, could be overthinking...
 # but short enough to change later
 # TODO document why it's necessary?
-def make_config(cls: Type[C], migration: Callable[[Attrs], Attrs]=lambda x: x) -> C:
+def make_config(cls: type[C], migration: Callable[[Attrs], Attrs] = lambda x: x) -> C:
     user_config = cls.__base__
     old_props = {
         # NOTE: deliberately use gettatr to 'force' class properties here
-        k: getattr(user_config, k) for k in vars(user_config)
+        k: getattr(user_config, k)
+        for k in vars(user_config)
     }
     new_props = migration(old_props)
     from dataclasses import fields
+
     params = {
         k: v
         for k, v in new_props.items()
-        if k in {f.name for f in fields(cls)}
+        if k in {f.name for f in fields(cls)}  # type: ignore[arg-type]  # see https://github.com/python/typing_extensions/issues/115
     }
     # todo maybe return type here?
-    return cls(**params) # type: ignore[call-arg]
+    return cls(**params)
 
 
 F = TypeVar('F')
-from contextlib import contextmanager
-from typing import Iterator
+
+
 @contextmanager
 def _override_config(config: F) -> Iterator[F]:
     '''
@@ -44,26 +54,30 @@ def _override_config(config: F) -> Iterator[F]:
             delattr(config, k)
 
 
-import importlib
-import sys
-from typing import Optional, Set
 ModuleRegex = str
+
+
 @contextmanager
 def _reload_modules(modules: ModuleRegex) -> Iterator[None]:
-    def loaded_modules() -> Set[str]:
-        return {name for name in sys.modules if re.fullmatch(modules, name)}
+    # need to use list here, otherwise reordering with set might mess things up
+    def loaded_modules() -> list[str]:
+        return [name for name in sys.modules if re.fullmatch(modules, name)]
 
     modules_before = loaded_modules()
 
-    for m in modules_before:
+    # uhh... seems that reversed might make more sense -- not 100% sure why, but this works for tests/reddit.py
+    for m in reversed(modules_before):
+        # ugh... seems that reload works whereas pop doesn't work in some cases (e.g. on tests/reddit.py)
+        # sys.modules.pop(m, None)
         importlib.reload(sys.modules[m])
 
     try:
         yield
     finally:
         modules_after = loaded_modules()
+        modules_before_set = set(modules_before)
         for m in modules_after:
-            if m in modules_before:
+            if m in modules_before_set:
                 # was previously loaded, so need to reload to pick up old config
                 importlib.reload(sys.modules[m])
             else:
@@ -72,16 +86,15 @@ def _reload_modules(modules: ModuleRegex) -> Iterator[None]:
                 sys.modules.pop(m, None)
 
 
-from contextlib import ExitStack
-import re
 @contextmanager
-def tmp_config(*, modules: Optional[ModuleRegex]=None, config=None):
+def tmp_config(*, modules: ModuleRegex | None = None, config=None):
     if modules is None:
         assert config is None
     if modules is not None:
         assert config is not None
 
     import my.config
+
     with ExitStack() as module_reload_stack, _override_config(my.config) as new_config:
         if config is not None:
             overrides = {k: v for k, v in vars(config).items() if not k.startswith('__')}
@@ -96,6 +109,7 @@ def tmp_config(*, modules: Optional[ModuleRegex]=None, config=None):
 def test_tmp_config() -> None:
     class extra:
         data_path = '/path/to/data'
+
     with tmp_config() as c:
         assert c.google != 'whatever'
         assert not hasattr(c, 'extra')

my/core/common.py

@@ -1,180 +1,43 @@
+from __future__ import annotations
+
+import os
+from collections.abc import Iterable, Sequence
 from glob import glob as do_glob
 from pathlib import Path
-from datetime import datetime
-import functools
-from contextlib import contextmanager
-import types
-from typing import Union, Callable, Dict, Iterable, TypeVar, Sequence, List, Optional, Any, cast, Tuple, TYPE_CHECKING, NoReturn
-import warnings
-from . import warnings as core_warnings
+from typing import (
+    TYPE_CHECKING,
+    Callable,
+    Generic,
+    TypeVar,
+    Union,
+)
+
+from . import compat, warnings
 
 # some helper functions
+# TODO start deprecating this? soon we'd be able to use Path | str syntax which is shorter and more explicit
 PathIsh = Union[Path, str]
 
-# TODO only used in tests? not sure if useful at all.
-def import_file(p: PathIsh, name: Optional[str] = None) -> types.ModuleType:
-    p = Path(p)
-    if name is None:
-        name = p.stem
-    import importlib.util
-    spec = importlib.util.spec_from_file_location(name, p)
-    assert spec is not None, f"Fatal error; Could not create module spec from {name} {p}"
-    foo = importlib.util.module_from_spec(spec)
-    loader = spec.loader; assert loader is not None
-    loader.exec_module(foo) # type: ignore[attr-defined]
-    return foo
-
-
-def import_from(path: PathIsh, name: str) -> types.ModuleType:
-    path = str(path)
-    import sys
-    try:
-        sys.path.append(path)
-        import importlib
-        return importlib.import_module(name)
-    finally:
-        sys.path.remove(path)
-
-
-def import_dir(path: PathIsh, extra: str='') -> types.ModuleType:
-    p = Path(path)
-    if p.parts[0] == '~':
-        p = p.expanduser() # TODO eh. not sure about this..
-    return import_from(p.parent, p.name + extra)
-
-
-T = TypeVar('T')
-K = TypeVar('K')
-V = TypeVar('V')
-
-# TODO deprecate? more_itertools.one should be used
-def the(l: Iterable[T]) -> T:
-    it = iter(l)
-    try:
-        first = next(it)
-    except StopIteration:
-        raise RuntimeError('Empty iterator?')
-    assert all(e == first for e in it)
-    return first
-
-
-# TODO more_itertools.bucket?
-def group_by_key(l: Iterable[T], key: Callable[[T], K]) -> Dict[K, List[T]]:
-    res: Dict[K, List[T]] = {}
-    for i in l:
-        kk = key(i)
-        lst = res.get(kk, [])
-        lst.append(i)
-        res[kk] = lst
-    return res
-
-
-def _identity(v: T) -> V:  # type: ignore[type-var]
-    return cast(V, v)
-
-
-# ugh. nothing in more_itertools?
-def ensure_unique(
-        it: Iterable[T],
-        *,
-        key: Callable[[T], K],
-        value: Callable[[T], V]=_identity,
-        key2value: Optional[Dict[K, V]]=None
-) -> Iterable[T]:
-    if key2value is None:
-        key2value = {}
-    for i in it:
-        k = key(i)
-        v = value(i)
-        pv = key2value.get(k, None)  # type: ignore
-        if pv is not None:
-            raise RuntimeError(f"Duplicate key: {k}. Previous value: {pv}, new value: {v}")
-        key2value[k] = v
-        yield i
-
-
-def test_ensure_unique() -> None:
-    import pytest  # type: ignore
-    assert list(ensure_unique([1, 2, 3], key=lambda i: i)) == [1, 2, 3]
-
-    dups = [1, 2, 1, 4]
-    # this works because it's lazy
-    it = ensure_unique(dups, key=lambda i: i)
-
-    # but forcing throws
-    with pytest.raises(RuntimeError, match='Duplicate key'):
-        list(it)
-
-    # hacky way to force distinct objects?
-    list(ensure_unique(dups, key=lambda i: object()))
-
-
-def make_dict(
-        it: Iterable[T],
-        *,
-        key: Callable[[T], K],
-        value: Callable[[T], V]=_identity
-) -> Dict[K, V]:
-    res: Dict[K, V] = {}
-    uniques = ensure_unique(it, key=key, value=value, key2value=res)
-    for _ in uniques:
-        pass  # force the iterator
-    return res
-
-
-def test_make_dict() -> None:
-    it = range(5)
-    d = make_dict(it, key=lambda i: i, value=lambda i: i % 2)
-    assert d == {0: 0, 1: 1, 2: 0, 3: 1, 4: 0}
-
-    # check type inference
-    d2: Dict[str, int ] = make_dict(it, key=lambda i: str(i))
-    d3: Dict[str, bool] = make_dict(it, key=lambda i: str(i), value=lambda i: i % 2 == 0)
-
-
-# https://stackoverflow.com/a/12377059/706389
-def listify(fn=None, wrapper=list):
-    """
-    Wraps a function's return value in wrapper (e.g. list)
-    Useful when an algorithm can be expressed more cleanly as a generator
-    """
-    def listify_return(fn):
-        @functools.wraps(fn)
-        def listify_helper(*args, **kw):
-            return wrapper(fn(*args, **kw))
-        return listify_helper
-    if fn is None:
-        return listify_return
-    return listify_return(fn)
-
-
-# todo use in bluemaestro
-# def dictify(fn=None, key=None, value=None):
-#     def md(it):
-#         return make_dict(it, key=key, value=value)
-#     return listify(fn=fn, wrapper=md)
-
-
-from .logging import setup_logger, LazyLogger
-
-
 Paths = Union[Sequence[PathIsh], PathIsh]
 
 
 DEFAULT_GLOB = '*'
+
+
 def get_files(
     pp: Paths,
     glob: str = DEFAULT_GLOB,
+    *,
     sort: bool = True,
     guess_compression: bool = True,
-) -> Tuple[Path, ...]:
+) -> tuple[Path, ...]:
     """
     Helper function to avoid boilerplate.
 
     Tuple as return type is a bit friendlier for hashing/caching, so hopefully makes sense
     """
     # TODO FIXME mm, some wrapper to assert iterator isn't empty?
-    sources: List[Path]
+    sources: list[Path]
     if isinstance(pp, Path):
         sources = [pp]
     elif isinstance(pp, str):
@@ -183,14 +46,15 @@ def get_files(
             return ()  # early return to prevent warnings etc
         sources = [Path(pp)]
     else:
-        sources = [Path(p) for p in pp]
+        sources = [p if isinstance(p, Path) else Path(p) for p in pp]
 
     def caller() -> str:
         import traceback
+
         # TODO ugh. very flaky... -3 because [<this function>, get_files(), <actual caller>]
         return traceback.extract_stack()[-3].filename
 
-    paths: List[Path] = []
+    paths: list[Path] = []
     for src in sources:
         if src.parts[0] == '~':
             src = src.expanduser()
@@ -198,140 +62,81 @@ def get_files(
         gs = str(src)
         if '*' in gs:
             if glob != DEFAULT_GLOB:
-                warnings.warn(f"{caller()}: treating {gs} as glob path. Explicit glob={glob} argument is ignored!")
-            paths.extend(map(Path, do_glob(gs)))
-        elif src.is_dir():
+                warnings.medium(f"{caller()}: treating {gs} as glob path. Explicit glob={glob} argument is ignored!")
+            paths.extend(map(Path, do_glob(gs)))  # noqa: PTH207
+        elif os.path.isdir(str(src)):  # noqa: PTH112
+            # NOTE: we're using os.path here on purpose instead of src.is_dir
+            # the reason is is_dir for archives might return True and then
+            # this clause would try globbing insize the archives
+            # this is generally undesirable (since modules handle archives themselves)
+
             # todo not sure if should be recursive?
             # note: glob='**/*.ext' works without any changes.. so perhaps it's ok as it is
             gp: Iterable[Path] = src.glob(glob)
             paths.extend(gp)
         else:
-            if not src.is_file():
-                # todo not sure, might be race condition?
-                raise RuntimeError(f"Expected '{src}' to exist")
+            assert src.exists(), src
             # todo assert matches glob??
             paths.append(src)
 
     if sort:
-        paths = list(sorted(paths))
+        paths = sorted(paths)
 
     if len(paths) == 0:
         # todo make it conditionally defensive based on some global settings
-        core_warnings.high(f'''
+        warnings.high(f'''
 {caller()}: no paths were matched against {pp}. This might result in missing data. Likely, the directory you passed is empty.
 '''.strip())
         # traceback is useful to figure out what config caused it?
         import traceback
+
         traceback.print_stack()
 
     if guess_compression:
-        from .kompress import CPath, is_compressed
-        paths = [CPath(p) if is_compressed(p) else p for p in paths]
+        from .kompress import CPath, ZipPath, is_compressed
+
+        # NOTE: wrap is just for backwards compat with vendorized kompress
+        # with kompress library, only is_compressed check and Cpath should be enough
+        def wrap(p: Path) -> Path:
+            if isinstance(p, ZipPath):
+                return p
+            if p.suffix == '.zip':
+                return ZipPath(p)  # type: ignore[return-value]
+            if is_compressed(p):
+                return CPath(p)
+            return p
+
+        paths = [wrap(p) for p in paths]
     return tuple(paths)
 
 
-# TODO annotate it, perhaps use 'dependent' type (for @doublewrap stuff)
-if TYPE_CHECKING:
-    from typing import Callable, TypeVar
-    from typing_extensions import Protocol
-    # TODO reuse types from cachew? although not sure if we want hard dependency on it in typecheck time..
-    # I guess, later just define pass through once this is fixed: https://github.com/python/typing/issues/270
-    # ok, that's actually a super nice 'pattern'
-    F = TypeVar('F')
-
-    class McachewType(Protocol):
-        def __call__(
-                self,
-                cache_path: Any=None,
-                *,
-                hashf: Any=None, # todo deprecate
-                depends_on: Any=None,
-                force_file: bool=False,
-                chunk_by: int=0,
-                logger: Any=None,
-        ) -> Callable[[F], F]:
-            ...
-
-    mcachew: McachewType
-
-
-_CACHE_DIR_NONE_HACK = Path('/tmp/hpi/cachew_none_hack')
-"""See core.cachew.cache_dir for the explanation"""
-
-
-_cache_path_dflt = cast(str, object())
-# TODO I don't really like 'mcachew', just 'cache' would be better... maybe?
-# todo ugh. I think it needs @doublewrap, otherwise @mcachew without args doesn't work
-# but it's a bit problematic.. doublewrap works by defecting if the first arg is callable
-# but here cache_path can also be a callable (for lazy/dynamic path)... so unclear how to detect this
-def mcachew(cache_path=_cache_path_dflt, **kwargs): # type: ignore[no-redef]
-    """
-    Stands for 'Maybe cachew'.
-    Defensive wrapper around @cachew to make it an optional dependency.
-    """
-    if cache_path is _cache_path_dflt:
-        # wasn't specified... so we need to use cache_dir
-        from .cachew import cache_dir
-        cache_path = cache_dir()
-
-    if isinstance(cache_path, (str, Path)):
-        try:
-            # check that it starts with 'hack' path
-            Path(cache_path).relative_to(_CACHE_DIR_NONE_HACK)
-        except: # noqa: E722 bare except
-            pass # no action needed, doesn't start with 'hack' string
-        else:
-            # todo show warning? tbh unclear how to detect when user stopped using 'old' way and using suffix instead?
-            # if it does, means that user wanted to disable cache
-            cache_path = None
-    try:
-        import cachew
-    except ModuleNotFoundError:
-        warnings.warn('cachew library not found. You might want to install it to speed things up. See https://github.com/karlicoss/cachew')
-        return lambda orig_func: orig_func
-    else:
-        kwargs['cache_path'] = cache_path
-        return cachew.cachew(**kwargs)
-
-
-@functools.lru_cache(1)
-def _magic():
-    import magic # type: ignore
-    return magic.Magic(mime=True)
-
-
-# TODO could reuse in pdf module?
-import mimetypes # todo do I need init()?
-# todo wtf? fastermime thinks it's mime is application/json even if the extension is xz??
-# whereas magic detects correctly: application/x-zstd and application/x-xz
-def fastermime(path: PathIsh) -> str:
-    paths = str(path)
-    # mimetypes is faster
-    (mime, _) = mimetypes.guess_type(paths)
-    if mime is not None:
-        return mime
-    # magic is slower but returns more stuff
-    # TODO Result type?; it's kinda racey, but perhaps better to let the caller decide?
-    return _magic().from_file(paths)
-
-
-Json = Dict[str, Any]
-
-
-from typing import TypeVar, Callable, Generic
-
-_C = TypeVar('_C')
 _R = TypeVar('_R')
 
+
 # https://stackoverflow.com/a/5192374/706389
+# NOTE: it was added to stdlib in 3.9 and then deprecated in 3.11
+# seems that the suggested solution is to use custom decorator?
 class classproperty(Generic[_R]):
-    def __init__(self, f: Callable[[_C], _R]) -> None:
+    def __init__(self, f: Callable[..., _R]) -> None:
         self.f = f
 
-    def __get__(self, obj: None, cls: _C) -> _R:
+    def __get__(self, obj, cls) -> _R:
         return self.f(cls)
 
 
+def test_classproperty() -> None:
+    from .compat import assert_type
+
+    class C:
+        @classproperty
+        def prop(cls) -> str:
+            return 'hello'
+
+    res = C.prop
+    assert_type(res, str)
+    assert res == 'hello'
+
+
 # hmm, this doesn't really work with mypy well..
 # https://github.com/python/mypy/issues/6244
 # class staticproperty(Generic[_R]):
@@ -341,310 +146,117 @@ class classproperty(Generic[_R]):
 #     def __get__(self) -> _R:
 #         return self.f()
 
-# TODO deprecate in favor of datetime_aware
-tzdatetime = datetime
-
-
-# TODO doctests?
-def isoparse(s: str) -> tzdatetime:
-    """
-    Parses timestamps formatted like 2020-05-01T10:32:02.925961Z
-    """
-    # TODO could use dateutil? but it's quite slow as far as I remember..
-    # TODO support non-utc.. somehow?
-    assert s.endswith('Z'), s
-    s = s[:-1] + '+00:00'
-    return datetime.fromisoformat(s)
-
-
-# legacy import -- we should use compat directly instead
-from .compat import Literal
-
 
 import re
+
+
 # https://stackoverflow.com/a/295466/706389
 def get_valid_filename(s: str) -> str:
     s = str(s).strip().replace(' ', '_')
     return re.sub(r'(?u)[^-\w.]', '', s)
 
 
-from typing import Generic, Sized, Callable
+# TODO deprecate and suggest to use one from my.core directly? not sure
+from .utils.itertools import unique_everseen  # noqa: F401
 
+### legacy imports, keeping them here for backwards compatibility
+## hiding behind TYPE_CHECKING so it works in runtime
+## in principle, warnings.deprecated decorator should cooperate with mypy, but doesn't look like it works atm?
+## perhaps it doesn't work when it's used from typing_extensions
 
-# X = TypeVar('X')
-def _warn_iterator(it, f: Any=None):
-    emitted = False
-    for i in it:
-        yield i
-        emitted = True
-    if not emitted:
-        warnings.warn(f"Function {f} didn't emit any data, make sure your config paths are correct")
+if not TYPE_CHECKING:
+    from .compat import deprecated
 
+    @deprecated('use my.core.compat.assert_never instead')
+    def assert_never(*args, **kwargs):
+        return compat.assert_never(*args, **kwargs)
 
-# TODO ugh, so I want to express something like:
-# X = TypeVar('X')
-# C = TypeVar('C', bound=Iterable[X])
-# _warn_iterable(it: C) -> C
-# but apparently I can't??? ugh.
-# https://github.com/python/typing/issues/548
-# I guess for now overloads are fine...
+    @deprecated('use my.core.compat.fromisoformat instead')
+    def isoparse(*args, **kwargs):
+        return compat.fromisoformat(*args, **kwargs)
 
-from typing import overload
-X = TypeVar('X')
-@overload
-def _warn_iterable(it: List[X]    , f: Any=None) -> List[X]    : ...
-@overload
-def _warn_iterable(it: Iterable[X], f: Any=None) -> Iterable[X]: ...
-def _warn_iterable(it, f=None):
-    if isinstance(it, Sized):
-        sz = len(it)
-        if sz == 0:
-            warnings.warn(f"Function {f} returned empty container, make sure your config paths are correct")
-        return it
-    else:
-        return _warn_iterator(it, f=f)
+    @deprecated('use more_itertools.one instead')
+    def the(*args, **kwargs):
+        import more_itertools
 
+        return more_itertools.one(*args, **kwargs)
 
-# ok, this seems to work...
-# https://github.com/python/mypy/issues/1927#issue-167100413
-FL = TypeVar('FL', bound=Callable[..., List])
-FI = TypeVar('FI', bound=Callable[..., Iterable])
+    @deprecated('use functools.cached_property instead')
+    def cproperty(*args, **kwargs):
+        import functools
 
-@overload
-def warn_if_empty(f: FL) -> FL: ...
-@overload
-def warn_if_empty(f: FI) -> FI: ...
+        return functools.cached_property(*args, **kwargs)
 
-
-def warn_if_empty(f):
-    from functools import wraps
-
-    @wraps(f)
-    def wrapped(*args, **kwargs):
-        res = f(*args, **kwargs)
-        return _warn_iterable(res, f=f)
-    return wrapped # type: ignore
-
-
-# global state that turns on/off quick stats
-# can use the 'quick_stats' contextmanager
-# to enable/disable this in cli so that module 'stats'
-# functions don't have to implement custom 'quick' logic
-QUICK_STATS = False
-
-
-# incase user wants to use the stats functions/quick option
-# elsewhere -- can use this decorator instead of editing
-# the global state directly
-@contextmanager
-def quick_stats():
-    global QUICK_STATS
-    prev = QUICK_STATS
-    try:
-        QUICK_STATS = True
-        yield
-    finally:
-        QUICK_STATS = prev
-
-
-C = TypeVar('C')
-Stats = Dict[str, Any]
-StatsFun = Callable[[], Stats]
-# todo not sure about return type...
-def stat(func: Union[Callable[[], Iterable[C]], Iterable[C]], quick: bool=False) -> Stats:
-    if callable(func):
-        fr = func()
-        fname = func.__name__
-    else:
-        # meh. means it's just a list.. not sure how to generate a name then
-        fr = func
-        fname = f'unnamed_{id(fr)}'
-    tname = type(fr).__name__
-    if tname == 'DataFrame':
-        # dynamic, because pandas is an optional dependency..
-        df = cast(Any, fr) # todo ugh, not sure how to annotate properly
-        res = dict(
-            dtypes=df.dtypes.to_dict(),
-            rows=len(df),
-        )
-    else:
-        res = _stat_iterable(fr, quick=quick)
-    return {
-        fname: res,
-    }
-
-
-def _stat_iterable(it: Iterable[C], quick: bool=False) -> Any:
-    from more_itertools import ilen, take, first
-
-    # todo not sure if there is something in more_itertools to compute this?
-    total = 0
-    errors = 0
-    last = None
-
-    def funcit():
-        nonlocal errors, last, total
-        for x in it:
-            total += 1
-            if isinstance(x, Exception):
-                errors += 1
-            else:
-                last = x
-            yield x
-
-    eit = funcit()
-    count: Any
-    if quick or QUICK_STATS:
-        initial = take(100, eit)
-        count = len(initial)
-        if first(eit, None) is not None: # todo can actually be none...
-            # haven't exhausted
-            count = f'{count}+'
-    else:
-        count = ilen(eit)
-
-    res = {
-        'count': count,
-    }
-
-    if total == 0:
-        # not sure but I guess a good balance? wouldn't want to throw early here?
-        res['warning'] = 'THE ITERABLE RETURNED NO DATA'
-
-    if errors > 0:
-        res['errors'] = errors
-
-    if last is not None:
-        dt = guess_datetime(last)
-        if dt is not None:
-            res['last'] = dt
+    @deprecated('use more_itertools.bucket instead')
+    def group_by_key(l, key):
+        res = {}
+        for i in l:
+            kk = key(i)
+            lst = res.get(kk, [])
+            lst.append(i)
+            res[kk] = lst
         return res
 
+    @deprecated('use my.core.utils.itertools.make_dict instead')
+    def make_dict(*args, **kwargs):
+        from .utils import itertools as UI
 
-def test_stat_iterable() -> None:
-    from datetime import datetime, timedelta
-    from typing import NamedTuple
+        return UI.make_dict(*args, **kwargs)
 
-    dd = datetime.utcfromtimestamp(123)
-    day = timedelta(days=3)
+    @deprecated('use my.core.utils.itertools.listify instead')
+    def listify(*args, **kwargs):
+        from .utils import itertools as UI
 
-    X = NamedTuple('X', [('x', int), ('d', datetime)])
+        return UI.listify(*args, **kwargs)
 
-    def it():
-        yield RuntimeError('oops!')
-        for i in range(2):
-            yield X(x=i, d=dd + day * i)
-        yield RuntimeError('bad!')
-        for i in range(3):
-            yield X(x=i * 10, d=dd + day * (i * 10))
-        yield X(x=123, d=dd + day * 50)
+    @deprecated('use my.core.warn_if_empty instead')
+    def warn_if_empty(*args, **kwargs):
+        from .utils import itertools as UI
 
-    res = _stat_iterable(it())
-    assert res['count']  == 1 + 2 + 1 + 3 + 1
-    assert res['errors'] == 1 + 1
-    assert res['last'] == dd + day * 50
+        return UI.listify(*args, **kwargs)
 
+    @deprecated('use my.core.stat instead')
+    def stat(*args, **kwargs):
+        from . import stats
 
-# experimental, not sure about it..
-def guess_datetime(x: Any) -> Optional[datetime]:
-    # todo hmm implement withoutexception..
-    try:
-        d = asdict(x)
-    except: # noqa: E722 bare except
-        return None
-    for k, v in d.items():
-        if isinstance(v, datetime):
-            return v
-    return None
+        return stats.stat(*args, **kwargs)
 
-def test_guess_datetime() -> None:
-    from datetime import datetime
-    from dataclasses import dataclass
-    from typing import NamedTuple
+    @deprecated('use my.core.make_logger instead')
+    def LazyLogger(*args, **kwargs):
+        from . import logging
 
-    dd = isoparse('2021-02-01T12:34:56Z')
+        return logging.LazyLogger(*args, **kwargs)
 
-    # ugh.. https://github.com/python/mypy/issues/7281
-    A = NamedTuple('A', [('x', int)])
-    B = NamedTuple('B', [('x', int), ('created', datetime)])
+    @deprecated('use my.core.types.asdict instead')
+    def asdict(*args, **kwargs):
+        from . import types
 
-    assert guess_datetime(A(x=4)) is None
-    assert guess_datetime(B(x=4, created=dd)) == dd
+        return types.asdict(*args, **kwargs)
 
-    @dataclass
-    class C:
-        a: datetime
-        x: int
-    assert guess_datetime(C(a=dd, x=435)) == dd
-    # TODO not sure what to return when multiple datetime fields?
-    # TODO test @property?
+    # todo wrap these in deprecated decorator as well?
+    # TODO hmm how to deprecate these in runtime?
+    # tricky cause they are actually classes/types
+    from typing import Literal  # noqa: F401
 
+    from .cachew import mcachew  # noqa: F401
 
-def is_namedtuple(thing: Any) -> bool:
-    # basic check to see if this is namedtuple-like
-    _asdict = getattr(thing, '_asdict', None)
-    return (_asdict is not None) and callable(_asdict)
+    # this is kinda internal, should just use my.core.logging.setup_logger if necessary
+    from .logging import setup_logger
+    from .stats import Stats
+    from .types import (
+        Json,
+        datetime_aware,
+        datetime_naive,
+    )
 
-
-def asdict(thing: Any) -> Json:
-    # todo primitive?
-    # todo exception?
-    if isinstance(thing, dict):
-        return thing
-    import dataclasses as D
-    if D.is_dataclass(thing):
-        return D.asdict(thing)
-    if is_namedtuple(thing):
-        return thing._asdict()
-    raise TypeError(f'Could not convert object {thing} to dict')
-
-
-# for now just serves documentation purposes... but one day might make it statically verifiable where possible?
-# TODO e.g. maybe use opaque mypy alias?
-datetime_naive = datetime
-datetime_aware = datetime
-
-
-def assert_subpackage(name: str) -> None:
-    # can lead to some unexpected issues if you 'import cachew' which being in my/core directory.. so let's protect against it
-    # NOTE: if we use overlay, name can be smth like my.origg.my.core.cachew ...
-    assert name == '__main__' or 'my.core' in name, f'Expected module __name__ ({name}) to be __main__ or start with my.core'
-
-
-# https://stackoverflow.com/a/10436851/706389
-from concurrent.futures import Future, Executor
-class DummyExecutor(Executor):
-    def __init__(self, max_workers: Optional[int]=1) -> None:
-        self._shutdown = False
-        self._max_workers = max_workers
-
-    # TODO: once support for 3.7 is dropped,
-    # can make 'fn' a positional only parameter,
-    # which fixes the mypy error this throws without the type: ignore
-    def submit(self, fn, *args, **kwargs) -> Future:  # type: ignore[override]
-        if self._shutdown:
-            raise RuntimeError('cannot schedule new futures after shutdown')
-
-        f: Future[Any] = Future()
-        try:
-            result = fn(*args, **kwargs)
-        except KeyboardInterrupt:
-            raise
-        except BaseException as e:
-            f.set_exception(e)
+    tzdatetime = datetime_aware
 else:
-            f.set_result(result)
+    from .compat import Never
 
-        return f
-
-    def shutdown(self, wait: bool=True) -> None:  # type: ignore[override]
-        self._shutdown = True
-
-
-# see https://hakibenita.com/python-mypy-exhaustive-checking#exhaustiveness-checking
-def assert_never(value: NoReturn) -> NoReturn:
-    assert False, f'Unhandled value: {value} ({type(value).__name__})'
-
-
-# legacy deprecated import
-from .compat import cached_property as cproperty
+    # make these invalid during type check while working in runtime
+    Stats = Never
+    tzdatetime = Never
+    Json = Never
+    datetime_naive = Never
+    datetime_aware = Never
+###

my/core/compat.py

@@ -1,127 +1,139 @@
 '''
-Some backwards compatibility stuff/deprecation helpers
+Contains backwards compatibility helpers for different python versions.
+If something is relevant to HPI itself, please put it in .hpi_compat instead
 '''
+
+from __future__ import annotations
+
 import sys
-from types import ModuleType
-
-from . import warnings
-from .common import LazyLogger
-
-
-logger = LazyLogger('my.core.compat')
-
-
-def pre_pip_dal_handler(
-        name: str,
-        e: ModuleNotFoundError,
-        cfg,
-        requires=[],
-) -> ModuleType:
-    '''
-    https://github.com/karlicoss/HPI/issues/79
-    '''
-    if e.name != name:
-        # the module itself was imported, so the problem is with some dependencies
-        raise e
-    try:
-        dal = _get_dal(cfg, name)
-        warnings.high(f'''
-Specifying modules' dependencies in the config or in my/config/repos is deprecated!
-Please install {' '.join(requires)} as PIP packages (see the corresponding README instructions).
-'''.strip(), stacklevel=2)
-    except ModuleNotFoundError:
-        dal = None
-
-    if dal is None:
-        # probably means there was nothing in the old config in the first place
-        # so we should raise the original exception
-        raise e
-    return dal
-
-
-def _get_dal(cfg, module_name: str):
-    mpath = getattr(cfg, module_name, None)
-    if mpath is not None:
-        from .common import import_dir
-        return import_dir(mpath, '.dal')
-    else:
-        from importlib import import_module
-        return import_module(f'my.config.repos.{module_name}.dal')
-
-
-import os
-windows = os.name == 'nt'
-
-
-import sqlite3
-def sqlite_backup(*, source: sqlite3.Connection, dest: sqlite3.Connection, **kwargs) -> None:
-    if sys.version_info[:2] >= (3, 7):
-        source.backup(dest, **kwargs)
-    else:
-        # https://stackoverflow.com/a/10856450/706389
-        import io
-        tempfile = io.StringIO()
-        for line in source.iterdump():
-            tempfile.write('%s\n' % line)
-        tempfile.seek(0)
-
-        dest.cursor().executescript(tempfile.read())
-        dest.commit()
-
-
-# can remove after python3.9
-def removeprefix(text: str, prefix: str) -> str:
-    if text.startswith(prefix):
-        return text[len(prefix):]
-    return text
-
-
-# can remove after python3.8
-if sys.version_info[:2] >= (3, 8):
-    from functools import cached_property
-else:
-    from typing import TypeVar, Callable
-    Cl = TypeVar('Cl')
-    R = TypeVar('R')
-
-    def cached_property(f: Callable[[Cl], R]) -> R:
-        import functools
-        return property(functools.lru_cache(maxsize=1)(f)) # type: ignore
-    del Cl
-    del R
-
-
 from typing import TYPE_CHECKING
 
-
-if sys.version_info[:2] >= (3, 8):
-    from typing import Literal
+if sys.version_info[:2] >= (3, 13):
+    from warnings import deprecated
 else:
-    if TYPE_CHECKING:
-        from typing_extensions import Literal
-    else:
-        # erm.. I guess as long as it's not crashing, whatever...
-        class _Literal:
-            def __getitem__(self, args):
-                pass
-        Literal = _Literal()
+    from typing_extensions import deprecated
 
 
-if sys.version_info[:2] >= (3, 8):
-    from typing import Protocol
-else:
-    if TYPE_CHECKING:
-        from typing_extensions import Protocol  # type: ignore[misc]
-    else:
-        # todo could also use NamedTuple?
-        Protocol = object
+# keeping just for backwards compatibility, used to have compat implementation for 3.6
+if not TYPE_CHECKING:
+    import sqlite3
+
+    @deprecated('use .backup method on sqlite3.Connection directly instead')
+    def sqlite_backup(*, source: sqlite3.Connection, dest: sqlite3.Connection, **kwargs) -> None:
+        # TODO warn here?
+        source.backup(dest, **kwargs)
+
+    # keeping for runtime backwards compatibility (added in 3.9)
+    @deprecated('use .removeprefix method on string directly instead')
+    def removeprefix(text: str, prefix: str) -> str:
+        return text.removeprefix(prefix)
+
+    @deprecated('use .removesuffix method on string directly instead')
+    def removesuffix(text: str, suffix: str) -> str:
+        return text.removesuffix(suffix)
+
+    ##
+
+    ## used to have compat function before 3.8 for these, keeping for runtime back compatibility
+    from functools import cached_property
+    from typing import Literal, Protocol, TypedDict
+##
 
 
-if sys.version_info[:2] >= (3, 8):
-    from typing import TypedDict
+if sys.version_info[:2] >= (3, 10):
+    from typing import ParamSpec
 else:
-    if TYPE_CHECKING:
-        from typing_extensions import TypedDict  # type: ignore[misc]
+    from typing_extensions import ParamSpec
+
+
+# bisect_left doesn't have a 'key' parameter (which we use)
+# till python3.10
+if sys.version_info[:2] <= (3, 9):
+    from typing import Any, Callable, List, Optional, TypeVar  # noqa: UP035
+
+    X = TypeVar('X')
+
+    # copied from python src
+    # fmt: off
+    def bisect_left(a: list[Any], x: Any, lo: int=0, hi: int | None=None, *, key: Callable[..., Any] | None=None) -> int:
+        if lo < 0:
+            raise ValueError('lo must be non-negative')
+        if hi is None:
+            hi = len(a)
+        # Note, the comparison uses "<" to match the
+        # __lt__() logic in list.sort() and in heapq.
+        if key is None:
+            while lo < hi:
+                mid = (lo + hi) // 2
+                if a[mid] < x:
+                    lo = mid + 1
                 else:
-        from typing import Dict
-        TypedDict = Dict
+                    hi = mid
+        else:
+            while lo < hi:
+                mid = (lo + hi) // 2
+                if key(a[mid]) < x:
+                    lo = mid + 1
+                else:
+                    hi = mid
+        return lo
+    # fmt: on
+
+else:
+    from bisect import bisect_left
+
+
+from datetime import datetime
+
+if sys.version_info[:2] >= (3, 11):
+    fromisoformat = datetime.fromisoformat
+else:
+    # fromisoformat didn't support Z as "utc" before 3.11
+    # https://docs.python.org/3/library/datetime.html#datetime.datetime.fromisoformat
+
+    def fromisoformat(date_string: str) -> datetime:
+        if date_string.endswith('Z'):
+            date_string = date_string[:-1] + '+00:00'
+        return datetime.fromisoformat(date_string)
+
+
+def test_fromisoformat() -> None:
+    from datetime import timezone
+
+    # fmt: off
+    # feedbin has this format
+    assert fromisoformat('2020-05-01T10:32:02.925961Z') == datetime(
+        2020, 5, 1, 10, 32, 2, 925961, timezone.utc,
+    )
+
+    # polar has this format
+    assert fromisoformat('2018-11-28T22:04:01.304Z') == datetime(
+        2018, 11, 28, 22, 4, 1, 304000, timezone.utc,
+    )
+
+    # stackexchange, runnerup has this format
+    assert fromisoformat('2020-11-30T00:53:12Z') == datetime(
+        2020, 11, 30, 0, 53, 12, 0, timezone.utc,
+    )
+    # fmt: on
+
+    # arbtt has this format (sometimes less/more than 6 digits in milliseconds)
+    # TODO doesn't work atm, not sure if really should be supported...
+    # maybe should have flags for weird formats?
+    # assert isoparse('2017-07-18T18:59:38.21731Z') == datetime(
+    #     2017, 7, 18, 18, 59, 38, 217310, timezone.utc,
+    # )
+
+
+if sys.version_info[:2] >= (3, 10):
+    from types import NoneType
+    from typing import TypeAlias
+else:
+    NoneType = type(None)
+    from typing_extensions import TypeAlias
+
+
+if sys.version_info[:2] >= (3, 11):
+    from typing import Never, assert_never, assert_type
+else:
+    from typing_extensions import Never, assert_never, assert_type

my/core/core_config.py

@@ -1,27 +1,33 @@
 '''
 Bindings for the 'core' HPI configuration
 '''
-import re
-from typing import Sequence, Optional
 
-from . import warnings, PathIsh, Path
+from __future__ import annotations
+
+import re
+from collections.abc import Sequence
+from dataclasses import dataclass
+from pathlib import Path
+
+from . import warnings
 
 try:
     from my.config import core as user_config  # type: ignore[attr-defined]
 except Exception as e:
     try:
-        from my.config import common as user_config # type: ignore[attr-defined, assignment, misc]
+        from my.config import common as user_config  # type: ignore[attr-defined]
+
         warnings.high("'common' config section is deprecated. Please rename it to 'core'.")
     except Exception as e2:
         # make it defensive, because it's pretty commonly used and would be annoying if it breaks hpi doctor etc.
         # this way it'll at least use the defaults
         # todo actually not sure if needs a warning? Perhaps it's okay without it, because the defaults are reasonable enough
-        user_config = object # type: ignore[assignment, misc]
+        user_config = object
 
 
 _HPI_CACHE_DIR_DEFAULT = ''
 
-from dataclasses import dataclass
+
 @dataclass
 class Config(user_config):
     '''
@@ -32,7 +38,7 @@ class Config(user_config):
         cache_dir = '/your/custom/cache/path'
     '''
 
-    cache_dir: Optional[PathIsh] = _HPI_CACHE_DIR_DEFAULT
+    cache_dir: Path | str | None = _HPI_CACHE_DIR_DEFAULT
     '''
     Base directory for cachew.
     - if None             , means cache is disabled
@@ -42,7 +48,7 @@ class Config(user_config):
     NOTE: you shouldn't use this attribute in HPI modules directly, use Config.get_cache_dir()/cachew.cache_dir() instead
     '''
 
-    tmp_dir: Optional[PathIsh] = None
+    tmp_dir: Path | str | None = None
     '''
     Path to a temporary directory.
     This can be used temporarily while extracting zipfiles etc...
@@ -50,34 +56,36 @@ class Config(user_config):
     - otherwise           , use the specified directory as the base temporary directory
     '''
 
-    enabled_modules : Optional[Sequence[str]] = None
+    enabled_modules: Sequence[str] | None = None
     '''
     list of regexes/globs
     - None means 'rely on disabled_modules'
     '''
 
-    disabled_modules: Optional[Sequence[str]] = None
+    disabled_modules: Sequence[str] | None = None
     '''
     list of regexes/globs
     - None means 'rely on enabled_modules'
     '''
 
-    def get_cache_dir(self) -> Optional[Path]:
+    def get_cache_dir(self) -> Path | None:
         cdir = self.cache_dir
         if cdir is None:
             return None
         if cdir == _HPI_CACHE_DIR_DEFAULT:
             from .cachew import _appdirs_cache_dir
+
             return _appdirs_cache_dir()
         else:
             return Path(cdir).expanduser()
 
     def get_tmp_dir(self) -> Path:
-        tdir: Optional[PathIsh] = self.tmp_dir
+        tdir: Path | str | None = self.tmp_dir
         tpath: Path
         # use tempfile if unset
         if tdir is None:
             import tempfile
+
             tpath = Path(tempfile.gettempdir()) / 'HPI'
         else:
             tpath = Path(tdir)
@@ -85,10 +93,10 @@ class Config(user_config):
         tpath.mkdir(parents=True, exist_ok=True)
         return tpath
 
-    def _is_module_active(self, module: str) -> Optional[bool]:
+    def _is_module_active(self, module: str) -> bool | None:
         # None means the config doesn't specify anything
         # todo might be nice to return the 'reason' too? e.g. which option has matched
-        def matches(specs: Sequence[str]) -> Optional[str]:
+        def matches(specs: Sequence[str]) -> str | None:
             for spec in specs:
                 # not sure because . (packages separate) matches anything, but I guess unlikely to clash
                 if re.match(spec, module):
@@ -114,12 +122,15 @@ class Config(user_config):
 
 
 from .cfg import make_config
+
 config = make_config(Config)
 
 
 ### tests start
-from typing import Iterator
+from collections.abc import Iterator
 from contextlib import contextmanager as ctx
+
+
 @ctx
 def _reset_config() -> Iterator[Config]:
     # todo maybe have this decorator for the whole of my.config?
@@ -146,7 +157,7 @@ def test_active_modules() -> None:
         cc.disabled_modules = ['my.body.*']
         assert cc._is_module_active('my.whatever'     ) is True
         assert cc._is_module_active('my.core'         ) is None
-        assert not cc._is_module_active('my.body.exercise') is True
+        assert cc._is_module_active('my.body.exercise') is False
 
     with reset() as cc:
         # if both are set, enable all
@@ -158,4 +169,5 @@ def test_active_modules() -> None:
             assert cc._is_module_active("my.body.exercise") is True
         assert len(record_warnings) == 1
 
+
 ### tests end

my/core/dataset.py

@@ -1,32 +1,5 @@
-from __future__ import annotations
-from .common import assert_subpackage; assert_subpackage(__name__)
+from . import warnings
 
-from .common import PathIsh
-from .compat import Protocol
-from .sqlite import sqlite_connect_immutable
+warnings.high(f"{__name__} is deprecated, please use dataset directly if you need or switch to my.core.sqlite")
 
-## sadly dataset doesn't have any type definitions
-from typing import Iterable, Iterator, Dict, Optional, Any
-from contextlib import AbstractContextManager
-
-
-# NOTE: may not be true in general, but will be in the vast majority of cases
-row_type_T = Dict[str, Any]
-
-
-class TableT(Iterable, Protocol):
-    def find(self, *, order_by: Optional[str]=None) -> Iterator[row_type_T]: ...
-
-
-class DatabaseT(AbstractContextManager['DatabaseT'], Protocol):
-    def __getitem__(self, table: str) -> TableT: ...
-##
-
-# TODO wonder if also need to open without WAL.. test this on read-only directory/db file
-def connect_readonly(db: PathIsh) -> DatabaseT:
-    import dataset # type: ignore
-    # see https://github.com/pudo/dataset/issues/136#issuecomment-128693122
-    # todo not sure if mode=ro has any benefit, but it doesn't work on read-only filesystems
-    # maybe it should autodetect readonly filesystems and apply this? not sure
-    creator = lambda: sqlite_connect_immutable(db)
-    return dataset.connect('sqlite:///', engine_kwargs={'creator': creator})
+from ._deprecated.dataset import *

my/core/denylist.py

@@ -0,0 +1,179 @@
+"""
+A helper module for defining denylists for sources programmatically
+(in lamens terms, this lets you remove some output from a module you don't want)
+
+For docs, see doc/DENYLIST.md
+"""
+
+from __future__ import annotations
+
+import functools
+import json
+import sys
+from collections import defaultdict
+from collections.abc import Iterator, Mapping
+from pathlib import Path
+from typing import Any, TypeVar
+
+import click
+from more_itertools import seekable
+
+from .serialize import dumps
+from .warnings import medium
+
+T = TypeVar("T")
+
+DenyMap = Mapping[str, set[Any]]
+
+
+def _default_key_func(obj: T) -> str:
+    return str(obj)
+
+
+class DenyList:
+    def __init__(self, denylist_file: Path | str) -> None:
+        self.file = Path(denylist_file).expanduser().absolute()
+        self._deny_raw_list: list[dict[str, Any]] = []
+        self._deny_map: DenyMap = defaultdict(set)
+
+        # deny cli, user can override these
+        self.fzf_path = None
+        self._fzf_options = ()
+        self._deny_cli_key_func = None
+
+    def _load(self) -> None:
+        if not self.file.exists():
+            medium(f"denylist file {self.file} does not exist")
+            return
+
+        deny_map: DenyMap = defaultdict(set)
+        data: list[dict[str, Any]] = json.loads(self.file.read_text())
+        self._deny_raw_list = data
+
+        for ignore in data:
+            for k, v in ignore.items():
+                deny_map[k].add(v)
+
+        self._deny_map = deny_map
+
+    def load(self) -> DenyMap:
+        self._load()
+        return self._deny_map
+
+    def write(self) -> None:
+        if not self._deny_raw_list:
+            medium("no denylist data to write")
+            return
+        self.file.write_text(json.dumps(self._deny_raw_list))
+
+    @classmethod
+    def _is_json_primitive(cls, val: Any) -> bool:
+        return isinstance(val, (str, int, float, bool, type(None)))
+
+    @classmethod
+    def _stringify_value(cls, val: Any) -> Any:
+        # if it's a primitive, just return it
+        if cls._is_json_primitive(val):
+            return val
+        # otherwise, stringify-and-back so we can compare to
+        # json data loaded from the denylist file
+        return json.loads(dumps(val))
+
+    @classmethod
+    def _allow(cls, obj: T, deny_map: DenyMap) -> bool:
+        for deny_key, deny_set in deny_map.items():
+            # this should be done separately and not as part of the getattr
+            # because 'null'/None could actually be a value in the denylist,
+            # and the user may define behavior to filter that out
+            if not hasattr(obj, deny_key):
+                return False
+            val = cls._stringify_value(getattr(obj, deny_key))
+            # this object doesn't have have the attribute in the denylist
+            if val in deny_set:
+                return False
+        # if we tried all the denylist keys and didn't return False,
+        # then this object is allowed
+        return True
+
+    def filter(
+        self,
+        itr: Iterator[T],
+        *,
+        invert: bool = False,
+    ) -> Iterator[T]:
+        denyf = functools.partial(self._allow, deny_map=self.load())
+        if invert:
+            return filter(lambda x: not denyf(x), itr)
+        return filter(denyf, itr)
+
+    def deny(self, key: str, value: Any, *, write: bool = False) -> None:
+        '''
+        add a key/value pair to the denylist
+        '''
+        if not self._deny_raw_list:
+            self._load()
+        self._deny_raw({key: self._stringify_value(value)}, write=write)
+
+    def _deny_raw(self, data: dict[str, Any], *, write: bool = False) -> None:
+        self._deny_raw_list.append(data)
+        if write:
+            self.write()
+
+    def _prompt_keys(self, item: T) -> str:
+        import pprint
+
+        click.echo(pprint.pformat(item))
+        # TODO: extract keys from item by checking if its dataclass/NT etc.?
+        resp = click.prompt("Key to deny on").strip()
+        if not hasattr(item, resp):
+            click.echo(f"Could not find key '{resp}' on item", err=True)
+            return self._prompt_keys(item)
+        return resp
+
+    def _deny_cli_remember(
+        self,
+        items: Iterator[T],
+        mem: dict[str, T],
+    ) -> Iterator[str]:
+        keyf = self._deny_cli_key_func or _default_key_func
+        # i.e., convert each item to a string, and map str -> item
+        for item in items:
+            key = keyf(item)
+            mem[key] = item
+            yield key
+
+    def deny_cli(self, itr: Iterator[T]) -> None:
+        try:
+            from pyfzf import FzfPrompt
+        except ImportError:
+            click.echo("pyfzf is required to use the denylist cli, run 'python3 -m pip install pyfzf_iter'", err=True)
+            sys.exit(1)
+
+        # wrap in seekable so we can use it multiple times
+        # progressively caches the items as we iterate over them
+        sit = seekable(itr)
+
+        prompt_continue = True
+
+        while prompt_continue:
+            # reset the iterator
+            sit.seek(0)
+            # so we can map the selected string from fzf back to the original objects
+            memory_map: dict[str, T] = {}
+            picker = FzfPrompt(executable_path=self.fzf_path, default_options="--no-multi")
+            picked_l = picker.prompt(
+                self._deny_cli_remember(itr, memory_map),
+                "--read0",
+                *self._fzf_options,
+                delimiter="\0",
+            )
+            assert isinstance(picked_l, list)
+            if picked_l:
+                picked: T = memory_map[picked_l[0]]
+                key = self._prompt_keys(picked)
+                self.deny(key, getattr(picked, key), write=True)
+                click.echo(f"Added {self._deny_raw_list[-1]} to denylist", err=True)
+            else:
+                click.echo("No item selected", err=True)
+
+            prompt_continue = click.confirm("Continue?")

my/core/discovery_pure.py

@@ -10,17 +10,20 @@ This potentially allows it to be:
 It should be free of external modules, importlib, exec, etc. etc.
 '''
 
+from __future__ import annotations
+
 REQUIRES = 'REQUIRES'
 NOT_HPI_MODULE_VAR = '__NOT_HPI_MODULE__'
 
 ###
 
 import ast
-import os
-from typing import Optional, Sequence, List, NamedTuple, Iterable, cast, Any
-from pathlib import Path
-import re
 import logging
+import os
+import re
+from collections.abc import Iterable, Sequence
+from pathlib import Path
+from typing import Any, NamedTuple, Optional, cast
 
 '''
 None means that requirements weren't defined (different from empty requirements)
@@ -30,11 +33,11 @@ Requires = Optional[Sequence[str]]
 
 class HPIModule(NamedTuple):
     name: str
-    skip_reason: Optional[str]
-    doc: Optional[str] = None
-    file: Optional[Path] = None
+    skip_reason: str | None
+    doc: str | None = None
+    file: Path | None = None
     requires: Requires = None
-    legacy: Optional[str] = None  # contains reason/deprecation warning
+    legacy: str | None = None  # contains reason/deprecation warning
 
 
 def ignored(m: str) -> bool:
@@ -119,7 +122,7 @@ def _extract_requirements(a: ast.Module) -> Requires:
             elif isinstance(c, ast.Str):
                 deps.append(c.s)
             else:
-                raise RuntimeError(f"Expecting string contants only in {REQUIRES} declaration")
+                raise RuntimeError(f"Expecting string constants only in {REQUIRES} declaration")
         return tuple(deps)
     return None
 
@@ -144,7 +147,7 @@ def all_modules() -> Iterable[HPIModule]:
 def _iter_my_roots() -> Iterable[Path]:
     import my  # doesn't import any code, because of namespace package
 
-    paths: List[str] = list(my.__path__)  # type: ignore[attr-defined]
+    paths: list[str] = list(my.__path__)
     if len(paths) == 0:
         # should probably never happen?, if this code is running, it was imported
         # because something was added to __path__ to match this name
@@ -242,7 +245,7 @@ def test_pure() -> None:
     src = Path(__file__).read_text()
     # 'import my' is allowed, but
     # dont allow anything other HPI modules
-    assert re.findall('import ' + r'my\.\S+', src, re.M) == []
+    assert re.findall('import ' + r'my\.\S+', src, re.MULTILINE) == []
     assert 'from ' + 'my' not in src
 
 

my/core/error.py

@@ -3,11 +3,22 @@ Various error handling helpers
 See https://beepb00p.xyz/mypy-error-handling.html#kiss for more detail
 """
 
+from __future__ import annotations
+
+import traceback
+from collections.abc import Iterable, Iterator
+from datetime import datetime
 from itertools import tee
-from typing import Union, TypeVar, Iterable, List, Tuple, Type, Optional, Callable, Any, cast
-
-from .compat import Literal
+from typing import (
+    Any,
+    Callable,
+    Literal,
+    TypeVar,
+    Union,
+    cast,
+)
 
+from .types import Json
 
 T = TypeVar('T')
 E = TypeVar('E', bound=Exception)  # TODO make covariant?
@@ -18,7 +29,8 @@ Res = ResT[T, Exception]
 
 ErrorPolicy = Literal["yield", "raise", "drop"]
 
-def notnone(x: Optional[T]) -> T:
+
+def notnone(x: T | None) -> T:
     assert x is not None
     return x
 
@@ -26,16 +38,49 @@ def notnone(x: Optional[T]) -> T:
 def unwrap(res: Res[T]) -> T:
     if isinstance(res, Exception):
         raise res
-    else:
     return res
 
 
+def drop_exceptions(itr: Iterator[Res[T]]) -> Iterator[T]:
+    """Return non-errors from the iterable"""
+    for o in itr:
+        if isinstance(o, Exception):
+            continue
+        yield o
+
+
+def raise_exceptions(itr: Iterable[Res[T]]) -> Iterator[T]:
+    """Raise errors from the iterable, stops the select function"""
+    for o in itr:
+        if isinstance(o, Exception):
+            raise o
+        yield o
+
+
+def warn_exceptions(itr: Iterable[Res[T]], warn_func: Callable[[Exception], None] | None = None) -> Iterator[T]:
+    # if not provided, use the 'warnings' module
+    if warn_func is None:
+        from my.core.warnings import medium
+
+        def _warn_func(e: Exception) -> None:
+            # TODO: print traceback? but user could always --raise-exceptions as well
+            medium(str(e))
+
+        warn_func = _warn_func
+
+    for o in itr:
+        if isinstance(o, Exception):
+            warn_func(o)
+            continue
+        yield o
+
+
 def echain(ex: E, cause: Exception) -> E:
     ex.__cause__ = cause
     return ex
 
 
-def split_errors(l: Iterable[ResT[T, E]], ET: Type[E]) -> Tuple[Iterable[T], Iterable[E]]:
+def split_errors(l: Iterable[ResT[T, E]], ET: type[E]) -> tuple[Iterable[T], Iterable[E]]:
     # TODO would be nice to have ET=Exception default? but it causes some mypy complaints?
     vit, eit = tee(l)
     # TODO ugh, not sure if I can reconcile type checking and runtime and convince mypy that ET and E are the same type?
@@ -53,7 +98,9 @@ def split_errors(l: Iterable[ResT[T, E]], ET: Type[E]) -> Tuple[Iterable[T], Ite
 
 
 K = TypeVar('K')
-def sort_res_by(items: Iterable[Res[T]], key: Callable[[Any], K]) -> List[Res[T]]:
+
+
+def sort_res_by(items: Iterable[Res[T]], key: Callable[[Any], K]) -> list[Res[T]]:
     """
     Sort a sequence potentially interleaved with errors/entries on which the key can't be computed.
     The general idea is: the error sticks to the non-error entry that follows it
@@ -61,7 +108,7 @@ def sort_res_by(items: Iterable[Res[T]], key: Callable[[Any], K]) -> List[Res[T]
     group = []
     groups = []
     for i in items:
-        k: Optional[K]
+        k: K | None
         try:
             k = key(i)
         except Exception:  # error white computing key? dunno, might be nice to handle...
@@ -71,8 +118,8 @@ def sort_res_by(items: Iterable[Res[T]], key: Callable[[Any], K]) -> List[Res[T]
             groups.append((k, group))
             group = []
 
-    results: List[Res[T]] = []
-    for v, grp in sorted(groups, key=lambda p: p[0]): # type: ignore[return-value, arg-type] # TODO SupportsLessThan??
+    results: list[Res[T]] = []
+    for _v, grp in sorted(groups, key=lambda p: p[0]):  # type: ignore[return-value, arg-type] # TODO SupportsLessThan??
         results.extend(grp)
     results.extend(group)  # handle last group (it will always be errors only)
 
@@ -94,7 +141,7 @@ def test_sort_res_by() -> None:
         1,
         Exc('last'),
     ]
-    results = sort_res_by(ress, lambda x: int(x)) # type: ignore
+    results = sort_res_by(ress, lambda x: int(x))
     assert results == [
         1,
         'bad',
@@ -106,32 +153,32 @@ def test_sort_res_by() -> None:
         Exc('last'),
     ]
 
-    results2 = sort_res_by(ress + [0], lambda x: int(x)) # type: ignore
+    results2 = sort_res_by([*ress, 0], lambda x: int(x))
     assert results2 == [Exc('last'), 0] + results[:-1]
 
     assert sort_res_by(['caba', 'a', 'aba', 'daba'], key=lambda x: len(x)) == ['a', 'aba', 'caba', 'daba']
-    assert sort_res_by([], key=lambda x: x) == [] # type: ignore
+    assert sort_res_by([], key=lambda x: x) == []
 
 
 # helpers to associate timestamps with the errors (so something meaningful could be displayed on the plots, for example)
 # todo document it under 'patterns' somewhere...
-
 # todo proper typevar?
-from datetime import datetime
-def set_error_datetime(e: Exception, dt: Optional[datetime]) -> None:
+def set_error_datetime(e: Exception, dt: datetime | None) -> None:
     if dt is None:
         return
-    e.args = e.args + (dt,)
+    e.args = (*e.args, dt)
     # todo not sure if should return new exception?
 
-def attach_dt(e: Exception, *, dt: Optional[datetime]) -> Exception:
+
+def attach_dt(e: Exception, *, dt: datetime | None) -> Exception:
     set_error_datetime(e, dt)
     return e
 
+
 # todo it might be problematic because might mess with timezones (when it's converted to string, it's converted to a shift)
-def extract_error_datetime(e: Exception) -> Optional[datetime]:
+def extract_error_datetime(e: Exception) -> datetime | None:
     import re
-    from datetime import datetime
+
     for x in reversed(e.args):
         if isinstance(x, datetime):
             return x
@@ -146,8 +193,6 @@ def extract_error_datetime(e: Exception) -> Optional[datetime]:
     return None
 
 
-import traceback
-from .common import Json
 def error_to_json(e: Exception) -> Json:
     estr = ''.join(traceback.format_exception(Exception, e, e.__traceback__))
     return {'error': estr}
@@ -155,7 +200,13 @@ def error_to_json(e: Exception) -> Json:
 
 MODULE_SETUP_URL = 'https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#private-configuration-myconfig'
 
-def warn_my_config_import_error(err: Union[ImportError, AttributeError], help_url: Optional[str] = None) -> bool:
+
+def warn_my_config_import_error(
+    err: ImportError | AttributeError,
+    *,
+    help_url: str | None = None,
+    module_name: str | None = None,
+) -> bool:
     """
     If the user tried to import something from my.config but it failed,
     possibly due to missing the config block in my.config?
@@ -163,10 +214,12 @@ def warn_my_config_import_error(err: Union[ImportError, AttributeError], help_ur
     Returns True if it matched a possible config error
     """
     import re
+
     import click
+
     if help_url is None:
         help_url = MODULE_SETUP_URL
-    if type(err) == ImportError:
+    if type(err) is ImportError:
         if err.name != 'my.config':
             return False
         # parse name that user attempted to import
@@ -178,17 +231,31 @@ You may be missing the '{section_name}' section from your config.
 See {help_url}\
 """, fg='yellow', err=True)
             return True
-    elif type(err) == AttributeError:
+    elif type(err) is AttributeError:
         # test if user had a nested config block missing
         # https://github.com/karlicoss/HPI/issues/223
         if hasattr(err, 'obj') and hasattr(err, "name"):
             config_obj = cast(object, getattr(err, 'obj'))  # the object that caused the attribute error
             # e.g. active_browser for my.browser
-            nested_block_name = err.name  # type: ignore[attr-defined]
-            if config_obj.__module__ == 'my.config':
-                click.secho(f"""You're likely missing the nested config block for '{getattr(config_obj, '__name__', str(config_obj))}.{nested_block_name}'.
+            nested_block_name = err.name
+            errmsg = f"""You're likely missing the nested config block for '{getattr(config_obj, '__name__', str(config_obj))}.{nested_block_name}'.
 See {help_url} or check the corresponding module.py file for an example\
-""", fg='yellow', err=True)
+"""
+            if config_obj.__module__ == 'my.config':
+                click.secho(errmsg, fg='yellow', err=True)
+                return True
+            if module_name is not None and nested_block_name == module_name.split('.')[-1]:
+                # this tries to cover cases like these
+                # user config:
+                # class location:
+                #     class via_ip:
+                #         accuracy = 10_000
+                # then when we import it, we do something like
+                # from my.config import location
+                # user_config = location.via_ip
+                # so if location is present, but via_ip is not, we get
+                # AttributeError: type object 'location' has no attribute 'via_ip'
+                click.secho(errmsg, fg='yellow', err=True)
                 return True
     else:
         click.echo(f"Unexpected error... {err}", err=True)
@@ -196,7 +263,8 @@ See {help_url} or check the corresponding module.py file for an example\
 
 
 def test_datetime_errors() -> None:
-    import pytz
+    import pytz  # noqa: I001
+
     dt_notz = datetime.now()
     dt_tz = datetime.now(tz=pytz.timezone('Europe/Amsterdam'))
     for dt in [dt_tz, dt_notz]:

my/core/experimental.py

@@ -0,0 +1,66 @@
+from __future__ import annotations
+
+import sys
+import types
+from typing import Any
+
+
+# The idea behind this one is to support accessing "overlaid/shadowed" modules from namespace packages
+# See usage examples here:
+# - https://github.com/karlicoss/hpi-personal-overlay/blob/master/src/my/util/hpi_heartbeat.py
+# - https://github.com/karlicoss/hpi-personal-overlay/blob/master/src/my/twitter/all.py
+# Suppose you want to use my.twitter.talon, which isn't in the default all.py
+# You could just copy all.py to your personal overlay, but that would mean duplicating
+# all the code and possible upstream changes.
+# Alternatively, you could import the "original" my.twitter.all module from "overlay" my.twitter.all
+# _ORIG = import_original_module(__name__, __file__)
+# this would magically take care of package import path etc,
+# and should import the "original" my.twitter.all as _ORIG
+# After that you can call its methods, extend etc.
+def import_original_module(
+    module_name: str,
+    file: str,
+    *,
+    star: bool = False,
+    globals: dict[str, Any] | None = None,
+) -> types.ModuleType:
+    module_to_restore = sys.modules[module_name]
+
+    # NOTE: we really wanna to hack the actual package of the module
+    # rather than just top level my.
+    # since that would be a bit less disruptive
+    module_pkg = module_to_restore.__package__
+    assert module_pkg is not None
+    parent = sys.modules[module_pkg]
+
+    my_path = parent.__path__._path  # type: ignore[attr-defined]
+    my_path_orig = list(my_path)
+
+    def fixup_path() -> None:
+        for i, p in enumerate(my_path_orig):
+            starts = file.startswith(p)
+            if i == 0:
+                # not sure about this.. but I guess it'll always be 0th element?
+                assert starts, (my_path_orig, file)
+            if starts:
+                my_path.remove(p)
+        # should remove exactly one item
+        assert len(my_path) + 1 == len(my_path_orig), (my_path_orig, file)
+
+    try:
+        fixup_path()
+        try:
+            del sys.modules[module_name]
+            # NOTE: we're using __import__ instead of importlib.import_module
+            # since it's closer to the actual normal import (e.g. imports subpackages etc properly )
+            # fromlist=[None] forces it to return rightmost child
+            # (otherwise would just return 'my' package)
+            res = __import__(module_name, fromlist=[None])  # type: ignore[list-item]
+            if star:
+                assert globals is not None
+                globals.update({k: v for k, v in vars(res).items() if not k.startswith('_')})
+            return res
+        finally:
+            sys.modules[module_name] = module_to_restore
+    finally:
+        my_path[:] = my_path_orig

my/core/freezer.py

@@ -1,27 +1,29 @@
-from .common import assert_subpackage; assert_subpackage(__name__)
+from __future__ import annotations
 
-import dataclasses as dcl
+from .internal import assert_subpackage
+
+assert_subpackage(__name__)
+
+import dataclasses
 import inspect
-from typing import TypeVar, Type, Any
+from typing import Any, Generic, TypeVar
 
 D = TypeVar('D')
 
 
-def _freeze_dataclass(Orig: Type[D]):
-    ofields = [(f.name, f.type, f) for f in dcl.fields(Orig)]
+def _freeze_dataclass(Orig: type[D]):
+    ofields = [(f.name, f.type, f) for f in dataclasses.fields(Orig)]  # type: ignore[arg-type]  # see https://github.com/python/typing_extensions/issues/115
 
     # extract properties along with their types
     props = list(inspect.getmembers(Orig, lambda o: isinstance(o, property)))
     pfields = [(name, inspect.signature(getattr(prop, 'fget')).return_annotation) for name, prop in props]
     # FIXME not sure about name?
     # NOTE: sadly passing bases=[Orig] won't work, python won't let us override properties with fields
-    RRR = dcl.make_dataclass('RRR', fields=[*ofields, *pfields])
+    RRR = dataclasses.make_dataclass('RRR', fields=[*ofields, *pfields])
     # todo maybe even declare as slots?
     return props, RRR
 
 
-# todo need some decorator thingie?
-from typing import Generic
 class Freezer(Generic[D]):
     '''
     Some magic which converts dataclass properties into fields.
@@ -29,13 +31,13 @@ class Freezer(Generic[D]):
     For now only supports dataclasses.
     '''
 
-    def __init__(self, Orig: Type[D]) -> None:
+    def __init__(self, Orig: type[D]) -> None:
         self.Orig = Orig
         self.props, self.Frozen = _freeze_dataclass(Orig)
 
     def freeze(self, value: D) -> D:
         pvalues = {name: getattr(value, name) for name, _ in self.props}
-        return self.Frozen(**dcl.asdict(value), **pvalues)
+        return self.Frozen(**dataclasses.asdict(value), **pvalues)  # type: ignore[call-overload]  # see https://github.com/python/typing_extensions/issues/115
 
 
 ### tests
@@ -43,7 +45,7 @@ class Freezer(Generic[D]):
 
 # this needs to be defined here to prevent a mypy bug
 # see https://github.com/python/mypy/issues/7281
-@dcl.dataclass
+@dataclasses.dataclass
 class _A:
     x: Any
 
@@ -58,8 +60,10 @@ class _A:
 
 
 def test_freezer() -> None:
-
-    val = _A(x=dict(an_int=123, an_any=[1, 2, 3]))
+    val = _A(x={
+        'an_int': 123,
+        'an_any': [1, 2, 3],
+    })
     af = Freezer(_A)
     fval = af.freeze(val)
 
@@ -67,6 +71,7 @@ def test_freezer() -> None:
     assert fd['typed']   == 123
     assert fd['untyped'] == [1, 2, 3]
 
+
 ###
 
 # TODO shit. what to do with exceptions?

my/core/hpi_compat.py

@@ -0,0 +1,260 @@
+"""
+Contains various backwards compatibility/deprecation helpers relevant to HPI itself.
+(as opposed to .compat module which implements compatibility between python versions)
+"""
+
+from __future__ import annotations
+
+import inspect
+import os
+import re
+from collections.abc import Iterator, Sequence
+from types import ModuleType
+from typing import TypeVar
+
+from . import warnings
+
+
+def handle_legacy_import(
+    parent_module_name: str,
+    legacy_submodule_name: str,
+    parent_module_path: list[str],
+) -> bool:
+    ###
+    # this is to trick mypy into treating this as a proper namespace package
+    # should only be used for backwards compatibility on packages that are convernted into namespace & all.py pattern
+    # - https://www.python.org/dev/peps/pep-0382/#namespace-packages-today
+    # - https://github.com/karlicoss/hpi_namespace_experiment
+    # - discussion here https://memex.zulipchat.com/#narrow/stream/279601-hpi/topic/extending.20HPI/near/269946944
+    from pkgutil import extend_path
+
+    parent_module_path[:] = extend_path(parent_module_path, parent_module_name)
+    # 'this' source tree ends up first in the pythonpath when we extend_path()
+    # so we need to move 'this' source tree towards the end to make sure we prioritize overlays
+    parent_module_path[:] = parent_module_path[1:] + parent_module_path[:1]
+    ###
+
+    # allow stuff like 'import my.module.submodule' and such
+    imported_as_parent = False
+
+    # allow stuff like 'from my.module import submodule'
+    importing_submodule = False
+
+    # some hacky traceback to inspect the current stack
+    # to see if the user is using the old style of importing
+    for f in inspect.stack():
+        # seems that when a submodule is imported, at some point it'll call some internal import machinery
+        # with 'parent' set to the parent module
+        # if parent module is imported first (i.e. in case of deprecated usage), it won't be the case
+        args = inspect.getargvalues(f.frame)
+        if args.locals.get('parent') == parent_module_name:
+            imported_as_parent = True
+
+        # this we can only detect from the code I guess
+        line = '\n'.join(f.code_context or [])
+        if re.match(rf'from\s+{parent_module_name}\s+import\s+{legacy_submodule_name}', line):
+            importing_submodule = True
+
+    # click sets '_HPI_COMPLETE' env var when it's doing autocompletion
+    # otherwise, the warning will be printed every time you try to tab complete
+    autocompleting_module_cli = "_HPI_COMPLETE" in os.environ
+
+    is_legacy_import = not (imported_as_parent or importing_submodule)
+    if is_legacy_import and not autocompleting_module_cli:
+        warnings.high(
+            f'''\
+importing {parent_module_name} is DEPRECATED! \
+Instead, import from {parent_module_name}.{legacy_submodule_name} or {parent_module_name}.all \
+See https://github.com/karlicoss/HPI/blob/master/doc/MODULE_DESIGN.org#allpy for more info.
+'''
+        )
+    return is_legacy_import
+
+
+def pre_pip_dal_handler(
+    name: str,
+    e: ModuleNotFoundError,
+    cfg,
+    requires: Sequence[str] = (),
+) -> ModuleType:
+    '''
+    https://github.com/karlicoss/HPI/issues/79
+    '''
+    if e.name != name:
+        # the module itself was imported, so the problem is with some dependencies
+        raise e
+    try:
+        dal = _get_dal(cfg, name)
+        warnings.high(
+            f'''
+Specifying modules' dependencies in the config or in my/config/repos is deprecated!
+Please install {' '.join(requires)} as PIP packages (see the corresponding README instructions).
+'''.strip(),
+            stacklevel=2,
+        )
+    except ModuleNotFoundError:
+        dal = None
+
+    if dal is None:
+        # probably means there was nothing in the old config in the first place
+        # so we should raise the original exception
+        raise e
+    return dal
+
+
+def _get_dal(cfg, module_name: str):
+    mpath = getattr(cfg, module_name, None)
+    if mpath is not None:
+        from .utils.imports import import_dir
+
+        return import_dir(mpath, '.dal')
+    else:
+        from importlib import import_module
+
+        return import_module(f'my.config.repos.{module_name}.dal')
+
+
+V = TypeVar('V')
+
+
+# named to be kinda consistent with more_itertools, e.g. more_itertools.always_iterable
+class always_supports_sequence(Iterator[V]):
+    """
+    Helper to make migration from Sequence/List to Iterable/Iterator type backwards compatible in runtime
+    """
+
+    def __init__(self, it: Iterator[V]) -> None:
+        self._it = it
+        self._list: list[V] | None = None
+        self._lit: Iterator[V] | None = None
+
+    def __iter__(self) -> Iterator[V]:  # noqa: PYI034
+        if self._list is not None:
+            self._lit = iter(self._list)
+        return self
+
+    def __next__(self) -> V:
+        if self._list is not None:
+            assert self._lit is not None
+            delegate = self._lit
+        else:
+            delegate = self._it
+        return next(delegate)
+
+    def __getattr__(self, name):
+        return getattr(self._it, name)
+
+    @property
+    def _aslist(self) -> list[V]:
+        if self._list is None:
+            qualname = getattr(self._it, '__qualname__', '<no qualname>')  # defensive just in case
+            warnings.medium(f'Using {qualname} as list is deprecated. Migrate to iterative processing or call list() explicitly.')
+            self._list = list(self._it)
+
+            # this is necessary for list constructor to work correctly
+            # since it's __iter__ first, then tries to compute length and then starts iterating...
+            self._lit = iter(self._list)
+        return self._list
+
+    def __len__(self) -> int:
+        return len(self._aslist)
+
+    def __getitem__(self, i: int) -> V:
+        return self._aslist[i]
+
+
+def test_always_supports_sequence_list_constructor() -> None:
+    exhausted = 0
+
+    def it() -> Iterator[str]:
+        nonlocal exhausted
+        yield from ['a', 'b', 'c']
+        exhausted += 1
+
+    sit = always_supports_sequence(it())
+
+    # list constructor is a bit special... it's trying to compute length if it's available to optimize memory allocation
+    # so, what's happening in this case is
+    # - sit.__iter__ is called
+    # - sit.__len__  is called
+    # - sit.__next__ is called
+    res = list(sit)
+    assert res == ['a', 'b', 'c']
+    assert exhausted == 1
+
+    res = list(sit)
+    assert res == ['a', 'b', 'c']
+    assert exhausted == 1  # this will iterate over 'cached' list now, so original generator is only exhausted once
+
+
+def test_always_supports_sequence_indexing() -> None:
+    exhausted = 0
+
+    def it() -> Iterator[str]:
+        nonlocal exhausted
+        yield from ['a', 'b', 'c']
+        exhausted += 1
+
+    sit = always_supports_sequence(it())
+
+    assert len(sit) == 3
+    assert exhausted == 1
+
+    assert sit[2] == 'c'
+    assert sit[1] == 'b'
+    assert sit[0] == 'a'
+    assert exhausted == 1
+
+    # a few tests to make sure list-like operations are working..
+    assert list(sit) == ['a', 'b', 'c']
+    assert [x for x in sit] == ['a', 'b', 'c']  # noqa: C416
+    assert list(sit) == ['a', 'b', 'c']
+    assert [x for x in sit] == ['a', 'b', 'c']  # noqa: C416
+    assert exhausted == 1
+
+
+def test_always_supports_sequence_next() -> None:
+    exhausted = 0
+
+    def it() -> Iterator[str]:
+        nonlocal exhausted
+        yield from ['a', 'b', 'c']
+        exhausted += 1
+
+    sit = always_supports_sequence(it())
+
+    x = next(sit)
+    assert x == 'a'
+    assert exhausted == 0
+
+    x = next(sit)
+    assert x == 'b'
+    assert exhausted == 0
+
+
+def test_always_supports_sequence_iter() -> None:
+    exhausted = 0
+
+    def it() -> Iterator[str]:
+        nonlocal exhausted
+        yield from ['a', 'b', 'c']
+        exhausted += 1
+
+    sit = always_supports_sequence(it())
+
+    for x in sit:
+        assert x == 'a'
+        break
+
+    x = next(sit)
+    assert x == 'b'
+
+    assert exhausted == 0
+
+    x = next(sit)
+    assert x == 'c'
+    assert exhausted == 0
+
+    for _ in sit:
+        raise RuntimeError  # shouldn't trigger, just exhaust the iterator
+    assert exhausted == 1

my/core/influxdb.py

@@ -1,14 +1,22 @@
 '''
 TODO doesn't really belong to 'core' morally, but can think of moving out later
 '''
-from .common import assert_subpackage; assert_subpackage(__name__)
 
-from typing import Iterable, Any, Optional, Dict
+from __future__ import annotations
 
-from .common import LazyLogger, asdict, Json
+from .internal import assert_subpackage
 
+assert_subpackage(__name__)
 
-logger = LazyLogger(__name__)
+from collections.abc import Iterable
+from typing import Any
+
+import click
+
+from .logging import make_logger
+from .types import Json, asdict
+
+logger = make_logger(__name__)
 
 
 class config:
@@ -27,6 +35,7 @@ def fill(it: Iterable[Any], *, measurement: str, reset: bool=RESET_DEFAULT, dt_c
     db = config.db
 
     from influxdb import InfluxDBClient  # type: ignore
+
     client = InfluxDBClient()
     # todo maybe create if not exists?
     # client.create_database(db)
@@ -37,7 +46,7 @@ def fill(it: Iterable[Any], *, measurement: str, reset: bool=RESET_DEFAULT, dt_c
         client.delete_series(database=db, measurement=measurement)
 
     # TODO need to take schema here...
-    cache: Dict[str, bool] = {}
+    cache: dict[str, bool] = {}
 
     def good(f, v) -> bool:
         c = cache.get(f)
@@ -56,7 +65,7 @@ def fill(it: Iterable[Any], *, measurement: str, reset: bool=RESET_DEFAULT, dt_c
     def dit() -> Iterable[Json]:
         for i in it:
             d = asdict(i)
-            tags: Optional[Json] = None
+            tags: Json | None = None
             tags_ = d.get('tags')  # meh... handle in a more robust manner
             if tags_ is not None and isinstance(tags_, dict):  # FIXME meh.
                 del d['tags']
@@ -69,18 +78,19 @@ def fill(it: Iterable[Any], *, measurement: str, reset: bool=RESET_DEFAULT, dt_c
 
             fields = filter_dict(d)
 
-            yield dict(
-                measurement=measurement,
+            yield {
+                'measurement': measurement,
                 # TODO maybe good idea to tag with database file/name? to inspect inconsistencies etc..
                 # hmm, so tags are autoindexed and might be faster?
                 # not sure what's the big difference though
                 # "fields are data and tags are metadata"
-                tags=tags,
-                time=dt,
-                fields=fields,
-            )
+                'tags': tags,
+                'time': dt,
+                'fields': fields,
+            }
 
     from more_itertools import chunked
+
     # "The optimal batch size is 5000 lines of line protocol."
     # some chunking is def necessary, otherwise it fails
     inserted = 0
@@ -94,7 +104,7 @@ def fill(it: Iterable[Any], *, measurement: str, reset: bool=RESET_DEFAULT, dt_c
     # todo "Specify timestamp precision when writing to InfluxDB."?
 
 
-def magic_fill(it, *, name: Optional[str]=None, reset: bool=RESET_DEFAULT) -> None:
+def magic_fill(it, *, name: str | None = None, reset: bool = RESET_DEFAULT) -> None:
     if name is None:
         assert callable(it)  # generators have no name/module
         name = f'{it.__module__}:{it.__name__}'
@@ -104,7 +114,9 @@ def magic_fill(it, *, name: Optional[str]=None, reset: bool=RESET_DEFAULT) -> No
         it = it()
 
     from itertools import tee
+
     from more_itertools import first, one
+
     it, x = tee(it)
     f = first(x, default=None)
     if f is None:
@@ -114,17 +126,17 @@ def magic_fill(it, *, name: Optional[str]=None, reset: bool=RESET_DEFAULT) -> No
     # TODO can we reuse pandas code or something?
     #
     from .pandas import _as_columns
+
     schema = _as_columns(type(f))
 
     from datetime import datetime
+
     dtex = RuntimeError(f'expected single datetime field. schema: {schema}')
     dtf = one((f for f, t in schema.items() if t == datetime), too_short=dtex, too_long=dtex)
 
     fill(it, measurement=name, reset=reset, dt_col=dtf)
 
 
-import click
-
 @click.group()
 def main() -> None:
     pass
@@ -133,8 +145,9 @@ def main() -> None:
 @main.command(name='populate', short_help='populate influxdb')
 @click.option('--reset', is_flag=True, help='Reset Influx measurements before inserting', show_default=True)
 @click.argument('FUNCTION_NAME', type=str, required=True)
-def populate(function_name: str, reset: bool) -> None:
+def populate(*, function_name: str, reset: bool) -> None:
     from .__main__ import _locate_functions_or_prompt
+
     [provider] = list(_locate_functions_or_prompt([function_name]))
     # todo could have a non-interactive version which populates from all data sources for the provider?
     magic_fill(provider, reset=reset)

my/core/init.py

@@ -1,7 +1,8 @@
 '''
 A hook to insert user's config directory into Python's search path.
+Note that this file is imported only if we don't have custom user config (under my.config namespace) in PYTHONPATH
 
-Ideally that would be in __init__.py (so it's executed without having to import explicityly)
+Ideally that would be in __init__.py (so it's executed without having to import explicitly)
 But, with namespace packages, we can't have __init__.py in the parent subpackage
 (see http://python-notes.curiousefficiency.org/en/latest/python_concepts/import_traps.html#the-init-py-trap)
 
@@ -15,15 +16,17 @@ Please let me know if you are aware of a better way of dealing with this!
 def setup_config() -> None:
     import sys
     import warnings
+    from pathlib import Path
 
     from .preinit import get_mycfg_dir
+
     mycfg_dir = get_mycfg_dir()
 
     if not mycfg_dir.exists():
         warnings.warn(f"""
 'my.config' package isn't found! (expected at '{mycfg_dir}'). This is likely to result in issues.
 See https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#setting-up-the-modules for more info.
-""".strip())
+""".strip(), stacklevel=1)
         return
 
     mpath = str(mycfg_dir)
@@ -41,11 +44,29 @@ See https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#setting-up-the-mo
     except ImportError as ex:
         # just in case... who knows what crazy setup users have
         import logging
+
         logging.exception(ex)
         warnings.warn(f"""
 Importing 'my.config' failed! (error: {ex}). This is likely to result in issues.
 See https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#setting-up-the-modules for more info.
-""")
+""", stacklevel=1)
+    else:
+        # defensive just in case -- __file__ may not be present if there is some dynamic magic involved
+        used_config_file = getattr(my.config, '__file__', None)
+        if used_config_file is not None:
+            used_config_path = Path(used_config_file)
+            try:
+                # will crash if it's imported from other dir?
+                used_config_path.relative_to(mycfg_dir)
+            except ValueError:
+                # TODO maybe implement a strict mode where these warnings will be errors?
+                warnings.warn(
+                    f"""
+Expected my.config to be located at {mycfg_dir}, but instead its path is {used_config_path}.
+This will likely cause issues down the line -- double check {mycfg_dir} structure.
+See https://github.com/karlicoss/HPI/blob/master/doc/SETUP.org#setting-up-the-modules for more info.
+""", stacklevel=1
+                    )
 
 
 setup_config()

my/core/internal.py

@@ -0,0 +1,9 @@
+"""
+Utils specific to hpi core, shouldn't really be used by HPI modules
+"""
+
+
+def assert_subpackage(name: str) -> None:
+    # can lead to some unexpected issues if you 'import cachew' which being in my/core directory.. so let's protect against it
+    # NOTE: if we use overlay, name can be smth like my.origg.my.core.cachew ...
+    assert name == '__main__' or 'my.core' in name, f'Expected module __name__ ({name}) to be __main__ or start with my.core'

my/core/kompress.py

@@ -1,224 +1,17 @@
-"""
-Various helpers for compression
-"""
-from __future__ import annotations
+from .internal import assert_subpackage
 
-from datetime import datetime
-import pathlib
-from pathlib import Path
-import sys
-from typing import Union, IO, Sequence, Any, Iterator
-import io
+assert_subpackage(__name__)
 
-PathIsh = Union[Path, str]
+from . import warnings
 
+# do this later -- for now need to transition modules to avoid using kompress directly (e.g. ZipPath)
+# warnings.high('my.core.kompress is deprecated, please use "kompress" library directly. See https://github.com/karlicoss/kompress')
 
-class Ext:
-    xz    = '.xz'
-    zip   = '.zip'
-    lz4   = '.lz4'
-    zstd  = '.zstd'
-    targz = '.tar.gz'
-
-
-def is_compressed(p: Path) -> bool:
-    # todo kinda lame way for now.. use mime ideally?
-    # should cooperate with kompress.kopen?
-    return any(p.name.endswith(ext) for ext in {Ext.xz, Ext.zip, Ext.lz4, Ext.zstd, Ext.targz})
-
-
-def _zstd_open(path: Path, *args, **kwargs) -> IO[str]:
-    import zstandard as zstd # type: ignore
-    fh = path.open('rb')
-    dctx = zstd.ZstdDecompressor()
-    reader = dctx.stream_reader(fh)
-    return io.TextIOWrapper(reader, **kwargs) # meh
-
-
-# TODO returns protocol that we can call 'read' against?
-# TODO use the 'dependent type' trick?
-def kopen(path: PathIsh, *args, mode: str='rt', **kwargs) -> IO[str]:
-    # TODO handle mode in *rags?
-    encoding = kwargs.get('encoding', 'utf8')
-    kwargs['encoding'] = encoding
-
-    pp = Path(path)
-    name = pp.name
-    if name.endswith(Ext.xz):
-        import lzma
-        r = lzma.open(pp, mode, *args, **kwargs)
-        # should only happen for binary mode?
-        # file:///usr/share/doc/python3/html/library/lzma.html?highlight=lzma#lzma.open
-        assert not isinstance(r, lzma.LZMAFile), r
-        return r
-    elif name.endswith(Ext.zip):
-        # eh. this behaviour is a bit dodgy...
-        from zipfile import ZipFile
-        zfile = ZipFile(pp)
-
-        [subpath] = args # meh?
-
-        ## oh god... https://stackoverflow.com/a/5639960/706389
-        ifile = zfile.open(subpath, mode='r')
-        ifile.readable = lambda: True  # type: ignore
-        ifile.writable = lambda: False # type: ignore
-        ifile.seekable = lambda: False # type: ignore
-        ifile.read1    = ifile.read    # type: ignore
-        # TODO pass all kwargs here??
-        # todo 'expected "BinaryIO"'??
-        return io.TextIOWrapper(ifile, encoding=encoding) # type: ignore[arg-type]
-    elif name.endswith(Ext.lz4):
-        import lz4.frame # type: ignore
-        return lz4.frame.open(str(pp), mode, *args, **kwargs)
-    elif name.endswith(Ext.zstd):
-        return _zstd_open(pp, mode, *args, **kwargs)
-    elif name.endswith(Ext.targz):
-        import tarfile
-        # FIXME pass mode?
-        tf = tarfile.open(pp)
-        # TODO pass encoding?
-        x = tf.extractfile(*args); assert x is not None
-        return x  # type: ignore[return-value]
-    else:
-        return pp.open(mode, *args, **kwargs)
-
-
-import typing
-import os
-
-if typing.TYPE_CHECKING:
-    # otherwise mypy can't figure out that BasePath is a type alias..
-    BasePath = pathlib.Path
-else:
-    BasePath = pathlib.WindowsPath if os.name == 'nt' else pathlib.PosixPath
-
-
-class CPath(BasePath):
-    """
-    Hacky way to support compressed files.
-    If you can think of a better way to do this, please let me know! https://github.com/karlicoss/HPI/issues/20
-
-    Ugh. So, can't override Path because of some _flavour thing.
-    Path only has _accessor and _closed slots, so can't directly set .open method
-    _accessor.open has to return file descriptor, doesn't work for compressed stuff.
-    """
-    def open(self, *args, **kwargs):
-        # TODO assert read only?
-        return kopen(str(self))
-
-
-open = kopen # TODO deprecate
-
-
-# meh
-# TODO ideally switch to ZipPath or smth similar?
-# nothing else supports subpath properly anyway
-def kexists(path: PathIsh, subpath: str) -> bool:
 try:
-        kopen(path, subpath)
-        return True
-    except Exception:
-        return False
-
-
-import zipfile
-if sys.version_info[:2] >= (3, 8):
-    # meh... zipfile.Path is not available on 3.7
-    zipfile_Path = zipfile.Path
+    from kompress import *
+except ModuleNotFoundError as e:
+    if e.name == 'kompress':
+        warnings.high('Please install kompress (pip3 install kompress). Falling onto vendorized kompress for now.')
+        from ._deprecated.kompress import *  # type: ignore[assignment]
     else:
-    if typing.TYPE_CHECKING:
-        zipfile_Path = Any
-    else:
-        zipfile_Path = object
-
-
-class ZipPath(zipfile_Path):
-    # NOTE: is_dir/is_file might not behave as expected, the base class checks it only based on the slash in path
-
-    # seems that root/at are not exposed in the docs, so might be an implementation detail
-    root: zipfile.ZipFile
-    at: str
-
-    @property
-    def filepath(self) -> Path:
-        res = self.root.filename
-        assert res is not None  # make mypy happy
-        return Path(res)
-
-    @property
-    def subpath(self) -> Path:
-        return Path(self.at)
-
-    def absolute(self) -> ZipPath:
-        return ZipPath(self.filepath.absolute(), self.at)
-
-    def exists(self) -> bool:
-        if self.at == '':
-            # special case, the base class returns False in this case for some reason
-            return self.filepath.exists()
-        return super().exists() or self._as_dir().exists()
-
-    def _as_dir(self) -> zipfile_Path:
-        # note: seems that zip always uses forward slash, regardless OS?
-        return zipfile_Path(self.root, self.at + '/')
-
-    def rglob(self, glob: str) -> Sequence[ZipPath]:
-        # note: not 100% sure about the correctness, but seem fine?
-        # Path.match() matches from the right, so need to
-        rpaths = [p for p in self.root.namelist() if p.startswith(self.at)]
-        rpaths = [p for p in rpaths if Path(p).match(glob)]
-        return [ZipPath(self.root, p) for p in rpaths]
-
-    def relative_to(self, other: ZipPath) -> Path:
-        assert self.filepath == other.filepath, (self.filepath, other.filepath)
-        return self.subpath.relative_to(other.subpath)
-
-    @property
-    def parts(self) -> Sequence[str]:
-        # messy, but might be ok..
-        return self.filepath.parts + self.subpath.parts
-
-    def __truediv__(self, key) -> ZipPath:
-        # need to implement it so the return type is not zipfile.Path
-        tmp = zipfile_Path(self.root) / self.at / key
-        return ZipPath(self.root, tmp.at)  # type: ignore[attr-defined]
-
-    def iterdir(self) -> Iterator[ZipPath]:
-        for s in self._as_dir().iterdir():
-            yield ZipPath(s.root, s.at)  # type: ignore[attr-defined]
-
-    @property
-    def stem(self) -> str:
-        return self.subpath.stem
-
-    @property  # type: ignore[misc]
-    def __class__(self):
-        return Path
-
-    def __eq__(self, other) -> bool:
-        # hmm, super class doesn't seem to treat as equals unless they are the same object
-        if not isinstance(other, ZipPath):
-            return False
-        return (self.filepath, self.subpath) == (other.filepath, other.subpath)
-
-    def __hash__(self) -> int:
-        return hash((self.filepath, self.subpath))
-
-    def stat(self) -> os.stat_result:
-        # NOTE: zip datetimes have no notion of time zone, usually they just keep local time?
-        # see https://en.wikipedia.org/wiki/ZIP_(file_format)#Structure
-        dt = datetime(*self.root.getinfo(self.at).date_time)
-        ts = int(dt.timestamp())
-        params = dict(
-            st_mode=0,
-            st_ino=0,
-            st_dev=0,
-            st_nlink=1,
-            st_uid=1000,
-            st_gid=1000,
-            st_size=0,  # todo compute it properly?
-            st_atime=ts,
-            st_mtime=ts,
-            st_ctime=ts,
-        )
-        return os.stat_result(tuple(params.values()))
+        raise e

my/core/konsume.py

@@ -5,21 +5,25 @@ This can potentially allow both for safer defensive parsing, and let you know if
 TODO perhaps need to get some inspiration from linear logic to decide on a nice API...
 '''
 
+from __future__ import annotations
+
 from collections import OrderedDict
-from typing import Any, List
+from typing import Any
 
 
 def ignore(w, *keys):
     for k in keys:
         w[k].ignore()
 
+
 def zoom(w, *keys):
     return [w[k].zoom() for k in keys]
 
+
 # TODO need to support lists
 class Zoomable:
     def __init__(self, parent, *args, **kwargs) -> None:
-        super().__init__(*args, **kwargs) # type: ignore
+        super().__init__(*args, **kwargs)
         self.parent = parent
 
     # TODO not sure, maybe do it via del??
@@ -40,7 +44,7 @@ class Zoomable:
         assert self.parent is not None
         self.parent._remove(self)
 
-    def zoom(self) -> 'Zoomable':
+    def zoom(self) -> Zoomable:
         self.consume()
         return self
 
@@ -63,6 +67,7 @@ class Wdict(Zoomable, OrderedDict):
 
     def this_consumed(self):
         return len(self) == 0
+
     # TODO specify mypy type for the index special method?
 
 
@@ -77,6 +82,7 @@ class Wlist(Zoomable, list):
     def this_consumed(self):
         return len(self) == 0
 
+
 class Wvalue(Zoomable):
     def __init__(self, parent, value: Any) -> None:
         super().__init__(parent)
@@ -93,10 +99,9 @@ class Wvalue(Zoomable):
         return 'WValue{' + repr(self.value) + '}'
 
 
-from typing import Tuple
-def _wrap(j, parent=None) -> Tuple[Zoomable, List[Zoomable]]:
+def _wrap(j, parent=None) -> tuple[Zoomable, list[Zoomable]]:
     res: Zoomable
-    cc: List[Zoomable]
+    cc: list[Zoomable]
     if isinstance(j, dict):
         res = Wdict(parent)
         cc = [res]
@@ -120,15 +125,17 @@ def _wrap(j, parent=None) -> Tuple[Zoomable, List[Zoomable]]:
         raise RuntimeError(f'Unexpected type: {type(j)} {j}')
 
 
+from collections.abc import Iterator
 from contextlib import contextmanager
-from typing import Iterator
+
 
 class UnconsumedError(Exception):
     pass
 
+
 # TODO think about error policy later...
 @contextmanager
-def wrap(j, throw=True) -> Iterator[Zoomable]:
+def wrap(j, *, throw=True) -> Iterator[Zoomable]:
     w, children = _wrap(j)
 
     yield w
@@ -146,8 +153,11 @@ Expected {c} to be fully consumed by the parser.
 
 
 from typing import cast
+
+
 def test_unconsumed() -> None:
-    import pytest # type: ignore
+    import pytest
+
     with pytest.raises(UnconsumedError):
         with wrap({'a': 1234}) as w:
             w = cast(Wdict, w)
@@ -158,6 +168,7 @@ def test_unconsumed() -> None:
             w = cast(Wdict, w)
             d = w['c']['d'].zoom()
 
+
 def test_consumed() -> None:
     with wrap({'a': 1234}) as w:
         w = cast(Wdict, w)
@@ -168,6 +179,7 @@ def test_consumed() -> None:
         c = w['c'].zoom()
         d = c['d'].zoom()
 
+
 def test_types() -> None:
     # (string, number, object, array, boolean or nul
     with wrap({'string': 'string', 'number': 3.14, 'boolean': True, 'null': None, 'list': [1, 2, 3]}) as w:
@@ -179,6 +191,7 @@ def test_types() -> None:
         for x in list(w['list'].zoom()):  # TODO eh. how to avoid the extra list thing?
             x.consume()
 
+
 def test_consume_all() -> None:
     with wrap({'aaa': {'bbb': {'hi': 123}}}) as w:
         w = cast(Wdict, w)
@@ -188,11 +201,9 @@ def test_consume_all() -> None:
 
 def test_consume_few() -> None:
     import pytest
+
     pytest.skip('Will think about it later..')
-    with wrap({
-            'important': 123,
-            'unimportant': 'whatever'
-    }) as w:
+    with wrap({'important': 123, 'unimportant': 'whatever'}) as w:
         w = cast(Wdict, w)
         w['important'].zoom()
         w.consume_all()
@@ -200,7 +211,8 @@ def test_consume_few() -> None:
 
 
 def test_zoom() -> None:
-    import pytest # type: ignore
+    import pytest
+
     with wrap({'aaa': 'whatever'}) as w:
         w = cast(Wdict, w)
         with pytest.raises(KeyError):
@@ -209,3 +221,34 @@ def test_zoom() -> None:
 
 
 # TODO type check this...
+
+# TODO feels like the whole thing kind of unnecessarily complex
+# - cons:
+#     - in most cases this is not even needed? who cares if we miss a few attributes?
+# - pro: on the other hand it could be interesting to know about new attributes in data,
+#        and without this kind of processing we wouldn't even know
+# alternatives
+# - manually process data
+#   e.g. use asserts, dict.pop and dict.values() methods to unpack things
+#   - pros:
+#     - very simple, since uses built in syntax
+#     - very performant, as fast as it gets
+#     - very flexible, easy to adjust behaviour
+#   - cons:
+#     - can forget to assert about extra entities etc, so error prone
+#     - if we do something like =assert j.pop('status') == 200, j=, by the time assert happens we already popped item -- makes error handling harder
+#     - a bit verbose.. so probably requires some helper functions though (could be much leaner than current konsume though)
+#     - if we assert, then terminates parsing too early, if we're defensive then inflates the code a lot with if statements
+#       - TODO perhaps combine warnings somehow or at least only emit once per module?
+#       - hmm actually tbh if we carefully go through everything and don't make copies, then only requires one assert at the very end?
+#   - TODO this is kinda useful? https://discuss.python.org/t/syntax-for-dictionnary-unpacking-to-variables/18718
+#     operator.itemgetter?
+#   - TODO can use match operator in python for this? quite nice actually! and allows for dynamic behaviour
+#     only from 3.10 tho, and gonna be tricky to do dynamic defensive behaviour with this
+#   - TODO in a sense, blenser already would hint if some meaningful fields aren't being processed? only if they are changing though
+# - define a "schema" for data, then just recursively match data against the schema?
+#   possibly pydantic already does something like that? not sure about performance though
+#   pros:
+#     - much simpler to extend and understand what's going on
+#   cons:
+#     - more rigid, so it becomes tricky to do dynamic stuff (e.g. if schema actually changes)

my/core/legacy.py

@@ -1,55 +0,0 @@
-# I think 'compat' should be for python-specific compat stuff, whereas this for HPI specific backwards compatibility
-import inspect
-import re
-from typing import List
-
-from my.core import warnings as W
-
-
-def handle_legacy_import(
-        parent_module_name: str,
-        legacy_submodule_name: str,
-        parent_module_path: List[str],
-) -> bool:
-    ###
-    # this is to trick mypy into treating this as a proper namespace package
-    # should only be used for backwards compatibility on packages that are convernted into namespace & all.py pattern
-    # - https://www.python.org/dev/peps/pep-0382/#namespace-packages-today
-    # - https://github.com/karlicoss/hpi_namespace_experiment
-    # - discussion here https://memex.zulipchat.com/#narrow/stream/279601-hpi/topic/extending.20HPI/near/269946944
-    from pkgutil import extend_path
-    parent_module_path[:] = extend_path(parent_module_path, parent_module_name)
-    # 'this' source tree ends up first in the pythonpath when we extend_path()
-    # so we need to move 'this' source tree towards the end to make sure we prioritize overlays
-    parent_module_path[:] = parent_module_path[1:] + parent_module_path[:1]
-    ###
-
-    # allow stuff like 'import my.module.submodule' and such
-    imported_as_parent = False
-
-    # allow stuff like 'from my.module import submodule'
-    importing_submodule = False
-
-    # some hacky traceback to inspect the current stack
-    # to see if the user is using the old style of importing
-    for f in inspect.stack():
-        # seems that when a submodule is imported, at some point it'll call some internal import machinery
-        # with 'parent' set to the parent module
-        # if parent module is imported first (i.e. in case of deprecated usage), it won't be the case
-        args = inspect.getargvalues(f.frame)
-        if args.locals.get('parent') == parent_module_name:
-            imported_as_parent = True
-
-        # this we can only detect from the code I guess
-        line = '\n'.join(f.code_context or [])
-        if re.match(rf'from\s+{parent_module_name}\s+import\s+{legacy_submodule_name}', line):
-            importing_submodule = True
-
-    is_legacy_import = not (imported_as_parent or importing_submodule)
-    if is_legacy_import:
-        W.high(f'''\
-importing {parent_module_name} is DEPRECATED! \
-Instead, import from {parent_module_name}.{legacy_submodule_name} or {parent_module_name}.all \
-See https://github.com/karlicoss/HPI/blob/master/doc/MODULE_DESIGN.org#allpy for more info.
-''')
-    return is_legacy_import

my/core/logging.py

@@ -1,49 +1,61 @@
-#!/usr/bin/env python3
-'''
-Default logger is a bit meh, see 'test'/run this file for a demo
-TODO name 'klogging' to avoid possible conflict with default 'logging' module
-TODO shit. too late already? maybe use fallback & deprecate
-'''
+from __future__ import annotations
+
+import logging
+import os
+import sys
+import warnings
+from functools import lru_cache
+from typing import TYPE_CHECKING, Union
 
 
 def test() -> None:
     from typing import Callable
-    import logging
-    import sys
 
     M: Callable[[str], None] = lambda s: print(s, file=sys.stderr)
 
-    M("   Logging module's defaults are not great...'")
-    l = logging.getLogger('test_logger')
-    # todo why is mypy unhappy about these???
+    ## prepare exception for later
+    try:
+        None.whatever  # type: ignore[attr-defined]  # noqa: B018
+    except Exception as e:
+        ex = e
+    ##
+
+    M("   Logging module's defaults are not great:")
+    l = logging.getLogger('default_logger')
     l.error("For example, this should be logged as error. But it's not even formatted properly, doesn't have logger name or level")
 
-    M("   The reason is that you need to remember to call basicConfig() first")
+    M("\n   The reason is that you need to remember to call basicConfig() first. Let's do it now:")
+    logging.basicConfig()
     l.error("OK, this is better. But the default format kinda sucks, I prefer having timestamps and the file/line number")
 
-    M("")
-    M("    With LazyLogger you get a reasonable logging format, colours and other neat things")
+    M("\n   Also exception logging is kinda lame, doesn't print traceback by default unless you remember to pass exc_info:")
+    l.exception(ex)  # type: ignore[possibly-undefined]
 
-    ll = LazyLogger('test')  # No need for basicConfig!
+    M("\n\n    With make_logger you get a reasonable logging format, colours (via colorlog library) and other neat things:")
+
+    ll = make_logger('test')  # No need for basicConfig!
     ll.info("default level is INFO")
-    ll.debug(".. so this shouldn't be displayed")
+    ll.debug("... so this shouldn't be displayed")
     ll.warning("warnings are easy to spot!")
-    ll.exception(RuntimeError("exceptions as well"))
+
+    M("\n    Exceptions print traceback by default now:")
+    ll.exception(ex)
+
+    M("\n    You can (and should) use it via regular logging.getLogger after that, e.g. let's set logging level to DEBUG now")
+    logging.getLogger('test').setLevel(logging.DEBUG)
+    ll.debug("... now debug messages are also displayed")
 
 
-import logging
-from typing import Union, Optional
-import os
+DEFAULT_LEVEL = 'INFO'
+FORMAT = '{start}[%(levelname)-7s %(asctime)s %(name)s %(filename)s:%(lineno)-4d]{end} %(message)s'
+FORMAT_NOCOLOR = FORMAT.format(start='', end='')
+
 
 Level = int
-LevelIsh = Optional[Union[Level, str]]
+LevelIsh = Union[Level, str, None]
 
 
 def mklevel(level: LevelIsh) -> Level:
-    # todo put in some global file, like envvars.py
-    glevel = os.environ.get('HPI_LOGS', None)
-    if glevel is not None:
-        level = glevel
     if level is None:
         return logging.NOTSET
     if isinstance(level, int):
@@ -51,48 +63,204 @@ def mklevel(level: LevelIsh) -> Level:
     return getattr(logging, level.upper())
 
 
-FORMAT = '{start}[%(levelname)-7s %(asctime)s %(name)s %(filename)s:%(lineno)d]{end} %(message)s'
-FORMAT_COLOR   = FORMAT.format(start='%(color)s', end='%(end_color)s')
-FORMAT_NOCOLOR = FORMAT.format(start='', end='')
-DATEFMT = '%Y-%m-%d %H:%M:%S'
+def get_collapse_level() -> Level | None:
+    # TODO not sure if should be specific to logger name?
+    cl = os.environ.get('LOGGING_COLLAPSE', None)
+    if cl is not None:
+        return mklevel(cl)
+    # legacy name, maybe deprecate?
+    cl = os.environ.get('COLLAPSE_DEBUG_LOGS', None)
+    if cl is not None:
+        return logging.DEBUG
+    return None
 
 
-def setup_logger(logger: logging.Logger, level: LevelIsh) -> None:
-    lvl = mklevel(level)
-    try:
-        import logzero  # type: ignore[import]
-    except ModuleNotFoundError:
-        import warnings
+def get_env_level(name: str) -> Level | None:
+    PREFIX = 'LOGGING_LEVEL_'  # e.g. LOGGING_LEVEL_my_hypothesis=debug
+    # shell doesn't allow using dots in var names without escaping, so also support underscore syntax
+    lvl = os.environ.get(PREFIX + name, None) or os.environ.get(PREFIX + name.replace('.', '_'), None)
+    if lvl is not None:
+        return mklevel(lvl)
+    # if LOGGING_LEVEL_HPI is set, use that. This should override anything the module may set as its default
+    # this is also set when the user passes the --debug flag in the CLI
+    #
+    # check after LOGGING_LEVEL_ prefix since that is more specific
+    if 'LOGGING_LEVEL_HPI' in os.environ:
+        return mklevel(os.environ['LOGGING_LEVEL_HPI'])
+    # legacy name, for backwards compatibility
+    if 'HPI_LOGS' in os.environ:
+        from my.core.warnings import medium
 
-        warnings.warn("You might want to install 'logzero' for nice colored logs!")
-        logger.setLevel(lvl)
-        h = logging.StreamHandler()
-        h.setLevel(lvl)
-        h.setFormatter(logging.Formatter(fmt=FORMAT_NOCOLOR, datefmt=DATEFMT))
-        logger.addHandler(h)
-        logger.propagate = False  # ugh. otherwise it duplicates log messages? not sure about it..
+        medium('The HPI_LOGS environment variable is deprecated, use LOGGING_LEVEL_HPI instead')
+
+        return mklevel(os.environ['HPI_LOGS'])
+    return None
+
+
+def setup_logger(logger: str | logging.Logger, *, level: LevelIsh = None) -> None:
+    """
+    Wrapper to simplify logging setup.
+    """
+    if isinstance(logger, str):
+        logger = logging.getLogger(logger)
+
+    if level is None:
+        level = DEFAULT_LEVEL
+
+    # env level always takes precedence
+    env_level = get_env_level(logger.name)
+    if env_level is not None:
+        lvl = env_level
     else:
-        formatter = logzero.LogFormatter(
-            fmt=FORMAT_COLOR,
-            datefmt=DATEFMT,
-        )
-        logzero.setup_logger(logger.name, level=lvl, formatter=formatter)
+        lvl = mklevel(level)
+
+    if logger.level == logging.NOTSET:
+        # if it's already set, the user requested a different logging level, let's respect that
+        logger.setLevel(lvl)
+
+    _setup_handlers_and_formatters(name=logger.name)
 
 
-class LazyLogger(logging.Logger):
-    def __new__(cls, name: str, level: LevelIsh = 'INFO') -> 'LazyLogger':
+# cached since this should only be done once per logger instance
+@lru_cache(None)
+def _setup_handlers_and_formatters(name: str) -> None:
     logger = logging.getLogger(name)
-        # this is called prior to all _log calls so makes sense to do it here?
-        def isEnabledFor_lazyinit(*args, logger=logger, orig=logger.isEnabledFor, **kwargs):
-            att = 'lazylogger_init_done'
-            if not getattr(logger, att, False):  # init once, if necessary
-                setup_logger(logger, level=level)
-                setattr(logger, att, True)
-            return orig(*args, **kwargs)
 
-        logger.isEnabledFor = isEnabledFor_lazyinit  # type: ignore[assignment]
-        return logger  # type: ignore[return-value]
+    logger.addFilter(AddExceptionTraceback())
+
+    collapse_level = get_collapse_level()
+    if collapse_level is None or not sys.stderr.isatty():
+        handler = logging.StreamHandler()
+    else:
+        handler = CollapseLogsHandler(maxlevel=collapse_level)
+
+    # default level for handler is NOTSET, which will make it process all messages
+    # we rely on the logger to actually accept/reject log msgs
+    logger.addHandler(handler)
+
+    # this attribute is set to True by default, which causes log entries to be passed to root logger (e.g. if you call basicConfig beforehand)
+    # even if log entry is handled by this logger ... not sure what's the point of this behaviour??
+    logger.propagate = False
+
+    try:
+        # try colorlog first, so user gets nice colored logs
+        import colorlog
+    except ModuleNotFoundError:
+        warnings.warn("You might want to 'pip install colorlog' for nice colored logs", stacklevel=1)
+        formatter = logging.Formatter(FORMAT_NOCOLOR)
+    else:
+        # log_color/reset are specific to colorlog
+        FORMAT_COLOR = FORMAT.format(start='%(log_color)s', end='%(reset)s')
+        # colorlog should detect tty in principle, but doesn't handle everything for some reason
+        # see https://github.com/borntyping/python-colorlog/issues/71
+        if handler.stream.isatty():
+            formatter = colorlog.ColoredFormatter(FORMAT_COLOR)
+        else:
+            formatter = logging.Formatter(FORMAT_NOCOLOR)
+
+    handler.setFormatter(formatter)
+
+
+# by default, logging.exception isn't logging traceback unless called inside of the exception handler
+# which is a bit annoying since we have to pass exc_info explicitly
+# also see https://stackoverflow.com/questions/75121925/why-doesnt-python-logging-exception-method-log-traceback-by-default
+# todo also amend by post about defensive error handling?
+class AddExceptionTraceback(logging.Filter):
+    def filter(self, record: logging.LogRecord) -> bool:
+        if record.levelname == 'ERROR':
+            exc = record.msg
+            if isinstance(exc, BaseException):
+                if record.exc_info is None or record.exc_info == (None, None, None):
+                    exc_info = (type(exc), exc, exc.__traceback__)
+                    record.exc_info = exc_info
+        return True
+
+
+# todo also save full log in a file?
+class CollapseLogsHandler(logging.StreamHandler):
+    '''
+    Collapses subsequent debug log lines and redraws on the same line.
+    Hopefully this gives both a sense of progress and doesn't clutter the terminal as much?
+    '''
+
+    last: bool = False
+
+    maxlevel: Level = logging.DEBUG  # everything with less or equal level will be collapsed
+
+    def __init__(self, *args, maxlevel: Level, **kwargs) -> None:
+        super().__init__(*args, **kwargs)
+        self.maxlevel = maxlevel
+
+    def emit(self, record: logging.LogRecord) -> None:
+        try:
+            msg = self.format(record)
+            cur = record.levelno <= self.maxlevel and '\n' not in msg
+            if cur:
+                if self.last:
+                    self.stream.write('\033[K' + '\r')  # clear line + return carriage
+            else:
+                if self.last:
+                    self.stream.write('\n')  # clean up after the last line
+            self.last = cur
+            columns, _ = os.get_terminal_size(0)
+            # ugh. the columns thing is meh. dunno I guess ultimately need curses for that
+            # TODO also would be cool to have a terminal post-processor? kinda like tail but aware of logging keywords (INFO/DEBUG/etc)
+            self.stream.write(msg + ' ' * max(0, columns - len(msg)) + ('' if cur else '\n'))
+            self.flush()
+        except:
+            self.handleError(record)
+
+
+def make_logger(name: str, *, level: LevelIsh = None) -> logging.Logger:
+    logger = logging.getLogger(name)
+    setup_logger(logger, level=level)
+    return logger
+
+
+# ughh. hacky way to have a single enlighten instance per interpreter, so it can be shared between modules
+# not sure about this. I guess this should definitely be behind some flag
+# OK, when stdout is not a tty, enlighten doesn't log anything, good
+def get_enlighten():
+    # TODO could add env variable to disable enlighten for a module?
+    from unittest.mock import (
+        Mock,  # Mock to return stub so cients don't have to think about it
+    )
+
+    # for now hidden behind the flag since it's a little experimental
+    if os.environ.get('ENLIGHTEN_ENABLE', None) is None:
+        return Mock()
+
+    try:
+        import enlighten  # type: ignore[import-untyped]
+    except ModuleNotFoundError:
+        warnings.warn("You might want to 'pip install enlighten' for a nice progress bar", stacklevel=1)
+
+        return Mock()
+
+    # dirty, but otherwise a bit unclear how to share enlighten manager between packages that call each other
+    instance = getattr(enlighten, 'INSTANCE', None)
+    if instance is not None:
+        return instance
+    instance = enlighten.get_manager()
+    setattr(enlighten, 'INSTANCE', instance)
+    return instance
 
 
 if __name__ == '__main__':
     test()
+
+
+## legacy/deprecated methods for backwards compatibility
+if not TYPE_CHECKING:
+    from .compat import deprecated
+
+    @deprecated('use make_logger instead')
+    def LazyLogger(*args, **kwargs):
+        return make_logger(*args, **kwargs)
+
+    @deprecated('use make_logger instead')
+    def logger(*args, **kwargs):
+        return make_logger(*args, **kwargs)
+
+
+##

my/core/mime.py

@@ -0,0 +1,37 @@
+"""
+Utils for mime/filetype handling
+"""
+
+from __future__ import annotations
+
+from .internal import assert_subpackage
+
+assert_subpackage(__name__)
+
+import functools
+from pathlib import Path
+
+
+@functools.lru_cache(1)
+def _magic():
+    import magic  # type: ignore
+
+    # TODO also has uncompess=True? could be useful
+    return magic.Magic(mime=True)
+
+
+# TODO could reuse in pdf module?
+import mimetypes  # todo do I need init()?
+
+
+# todo wtf? fastermime thinks it's mime is application/json even if the extension is xz??
+# whereas magic detects correctly: application/x-zstd and application/x-xz
+def fastermime(path: Path | str) -> str:
+    paths = str(path)
+    # mimetypes is faster, so try it first
+    (mime, _) = mimetypes.guess_type(paths)
+    if mime is not None:
+        return mime
+    # magic is slower but handles more types
+    # TODO Result type?; it's kinda racey, but perhaps better to let the caller decide?
+    return _magic().from_file(paths)

my/core/orgmode.py

@@ -1,10 +1,13 @@
 """
 Various helpers for reading org-mode data
 """
+
 from datetime import datetime
+
+
 def parse_org_datetime(s: str) -> datetime:
     s = s.strip('[]')
-    for fmt, cl in [
+    for fmt, _cls in [
         ("%Y-%m-%d %a %H:%M", datetime),
         ("%Y-%m-%d %H:%M"   , datetime),
         # todo not sure about these... fallback on 00:00?
@@ -15,23 +18,29 @@ def parse_org_datetime(s: str) -> datetime:
             return datetime.strptime(s, fmt)
         except ValueError:
             continue
-    else:
     raise RuntimeError(f"Bad datetime string {s}")
 
 
 # TODO I guess want to borrow inspiration from bs4? element type <-> tag; and similar logic for find_one, find_all
 
+from collections.abc import Iterable
+from typing import Callable, TypeVar
+
 from orgparse import OrgNode
-from typing import Iterable, TypeVar, Callable
+
 V = TypeVar('V')
 
+
 def collect(n: OrgNode, cfun: Callable[[OrgNode], Iterable[V]]) -> Iterable[V]:
     yield from cfun(n)
     for c in n.children:
         yield from collect(c, cfun)
 
+
 from more_itertools import one
 from orgparse.extra import Table
+
+
 def one_table(o: OrgNode) -> Table:
     return one(collect(o, lambda n: (x for x in n.body_rich if isinstance(x, Table))))
 

my/core/pandas.py

@@ -1,32 +1,54 @@
 '''
 Various pandas helpers and convenience functions
 '''
+
+from __future__ import annotations
+
 # todo not sure if belongs to 'core'. It's certainly 'more' core than actual modules, but still not essential
 # NOTE: this file is meant to be importable without Pandas installed
-from datetime import datetime
+import dataclasses
+from collections.abc import Iterable, Iterator
+from datetime import datetime, timezone
 from pprint import pformat
-from typing import Optional, TYPE_CHECKING, Any, Iterable, Type, Dict
-from . import warnings, Res
-from .common import LazyLogger, Json, asdict
+from typing import (
+    TYPE_CHECKING,
+    Any,
+    Callable,
+    Literal,
+    TypeVar,
+)
 
-logger = LazyLogger(__name__)
+from decorator import decorator
+
+from . import warnings
+from .error import Res, error_to_json, extract_error_datetime
+from .logging import make_logger
+from .types import Json, asdict
+
+logger = make_logger(__name__)
 
 
 if TYPE_CHECKING:
-    # this is kinda pointless at the moment, but handy to annotate DF returning methods now
-    # later will be unignored when they implement type annotations
-    import pandas as pd # type: ignore
-    # DataFrameT = pd.DataFrame
-    # TODO ugh. pretty annoying, having any is not very useful since it would allow arbitrary coercions..
-    # ideally want to use a type that's like Any but doesn't allow arbitrary coercions??
-    DataFrameT = Any
+    import pandas as pd
+
+    DataFrameT = pd.DataFrame
+    SeriesT = pd.Series
+    from pandas._typing import S1  # meh
+
+    FuncT = TypeVar('FuncT', bound=Callable[..., DataFrameT])
+    # huh interesting -- with from __future__ import annotations don't even need else clause here?
+    # but still if other modules import these we do need some fake runtime types here..
 else:
-    # in runtime, make it defensive so it works without pandas
+    from typing import Optional
+
     DataFrameT = Any
+    SeriesT = Optional  # just some type with one argument
+    S1 = Any
 
 
-def check_dateish(s) -> Iterable[str]:
-    import pandas as pd # type: ignore # noqa: F811 not actually a redefinition
+def _check_dateish(s: SeriesT[S1]) -> Iterable[str]:
+    import pandas as pd  # noqa: F811 not actually a redefinition
+
     ctype = s.dtype
     if str(ctype).startswith('datetime64'):
         return
@@ -36,7 +58,7 @@ def check_dateish(s) -> Iterable[str]:
     all_timestamps = s.apply(lambda x: isinstance(x, (pd.Timestamp, datetime))).all()
     if not all_timestamps:
         return  # not sure why it would happen, but ok
-    tzs = s.map(lambda x: x.tzinfo).drop_duplicates()
+    tzs = s.map(lambda x: x.tzinfo).drop_duplicates()  # type: ignore[union-attr, var-annotated, arg-type, return-value, unused-ignore]
     examples = s[tzs.index]
     # todo not so sure this warning is that useful... except for stuff without tz
     yield f'''
@@ -45,13 +67,50 @@ def check_dateish(s) -> Iterable[str]:
     '''.strip()
 
 
-from .compat import Literal
+def test_check_dateish() -> None:
+    import pandas as pd
 
+    from .compat import fromisoformat
+
+    # empty series shouldn't warn
+    assert list(_check_dateish(pd.Series([]))) == []
+
+    # if no dateimes, shouldn't return any warnings
+    assert list(_check_dateish(pd.Series([1, 2, 3]))) == []
+
+    # all values are datetimes, shouldn't warn
+    # fmt: off
+    assert list(_check_dateish(pd.Series([
+        fromisoformat('2024-08-19T01:02:03'),
+        fromisoformat('2024-08-19T03:04:05'),
+    ]))) == []
+    # fmt: on
+
+    # mixture of timezones -- should warn
+    # fmt: off
+    assert len(list(_check_dateish(pd.Series([
+        fromisoformat('2024-08-19T01:02:03'),
+        fromisoformat('2024-08-19T03:04:05Z'),
+    ])))) == 1
+    # fmt: on
+
+    # TODO hmm. maybe this should actually warn?
+    # fmt: off
+    assert len(list(_check_dateish(pd.Series([
+        'whatever',
+        fromisoformat('2024-08-19T01:02:03'),
+    ])))) == 0
+    # fmt: on
+
+
+# fmt: off
 ErrorColPolicy = Literal[
     'add_if_missing',  # add error column if it's missing
     'warn'          ,  # warn, but do not modify
     'ignore'        ,  # no warnings
 ]
+# fmt: on
+
 
 def check_error_column(df: DataFrameT, *, policy: ErrorColPolicy) -> Iterable[str]:
     if 'error' in df:
@@ -71,19 +130,15 @@ No 'error' column detected. You probably forgot to handle errors defensively, wh
     yield wmsg
 
 
-from typing import Any, Callable, TypeVar
-FuncT = TypeVar('FuncT', bound=Callable[..., DataFrameT])
-
-# TODO ugh. typing this is a mess... shoul I use mypy_extensions.VarArg/KwArgs?? or what??
-from decorator import decorator
+# TODO ugh. typing this is a mess... perhaps should use .compat.ParamSpec?
 @decorator
 def check_dataframe(f: FuncT, error_col_policy: ErrorColPolicy = 'add_if_missing', *args, **kwargs) -> DataFrameT:
-    df = f(*args, **kwargs)
+    df: DataFrameT = f(*args, **kwargs)
     tag = '{f.__module__}:{f.__name__}'
     # makes sense to keep super defensive
     try:
-        for col, data in df.reset_index().iteritems():
-            for w in check_dateish(data):
+        for col, data in df.reset_index().items():
+            for w in _check_dateish(data):
                 warnings.low(f"{tag}, column '{col}': {w}")
     except Exception as e:
         logger.exception(e)
@@ -94,11 +149,11 @@ def check_dataframe(f: FuncT, error_col_policy: ErrorColPolicy='add_if_missing',
         logger.exception(e)
     return df
 
+
 # todo doctor: could have a suggesion to wrap dataframes with it?? discover by return type?
 
 
-def error_to_row(e: Exception, *, dt_col: str='dt', tz=None) -> Json:
-    from .error import error_to_json, extract_error_datetime
+def error_to_row(e: Exception, *, dt_col: str = 'dt', tz: timezone | None = None) -> Json:
     edt = extract_error_datetime(e)
     if edt is not None and edt.tzinfo is None and tz is not None:
         edt = edt.replace(tzinfo=tz)
@@ -107,8 +162,7 @@ def error_to_row(e: Exception, *, dt_col: str='dt', tz=None) -> Json:
     return err_dict
 
 
-# todo not sure about naming
-def to_jsons(it: Iterable[Res[Any]]) -> Iterable[Json]:
+def _to_jsons(it: Iterable[Res[Any]]) -> Iterable[Json]:
     for r in it:
         if isinstance(r, Exception):
             yield error_to_row(r)
@@ -120,11 +174,11 @@ def to_jsons(it: Iterable[Res[Any]]) -> Iterable[Json]:
 # no type for dataclass?
 Schema = Any
 
-def _as_columns(s: Schema) -> Dict[str, Type]:
+
+def _as_columns(s: Schema) -> dict[str, type]:
     # todo would be nice to extract properties; add tests for this as well
-    import dataclasses as D
-    if D.is_dataclass(s):
-        return {f.name: f.type for f in D.fields(s)}
+    if dataclasses.is_dataclass(s):
+        return {f.name: f.type for f in dataclasses.fields(s)}  # type: ignore[misc]  # ugh, why mypy thinks f.type can return str??
     # else must be NamedTuple??
     # todo assert my.core.common.is_namedtuple?
     return getattr(s, '_field_types')
@@ -132,7 +186,7 @@ def _as_columns(s: Schema) -> Dict[str, Type]:
 
 # todo add proper types
 @check_dataframe
-def as_dataframe(it: Iterable[Res[Any]], schema: Optional[Schema]=None) -> DataFrameT:
+def as_dataframe(it: Iterable[Res[Any]], schema: Schema | None = None) -> DataFrameT:
     # todo warn if schema isn't specified?
     # ok nice supports dataframe/NT natively
     # https://github.com/pandas-dev/pandas/pull/27999
@@ -141,26 +195,88 @@ def as_dataframe(it: Iterable[Res[Any]], schema: Optional[Schema]=None) -> DataF
     # same for NamedTuple -- seems that it takes whatever schema the first NT has
     # so we need to convert each individually... sigh
     import pandas as pd  # noqa: F811 not actually a redefinition
+
     columns = None if schema is None else list(_as_columns(schema).keys())
-    return pd.DataFrame(to_jsons(it), columns=columns)
+    return pd.DataFrame(_to_jsons(it), columns=columns)
+
+
+# ugh. in principle this could be inside the test
+# might be due to use of from __future__ import annotations
+# can quickly reproduce by running pytest tests/tz.py tests/core/test_pandas.py
+# possibly will be resolved after fix in pytest?
+# see https://github.com/pytest-dev/pytest/issues/7856
+@dataclasses.dataclass
+class _X:
+    # FIXME try moving inside?
+    x: int
 
 
 def test_as_dataframe() -> None:
+    import numpy as np
+    import pandas as pd
     import pytest
-    it = (dict(i=i, s=f'str{i}') for i in range(10))
+    from pandas.testing import assert_frame_equal
+
+    from .compat import fromisoformat
+
+    it = ({'i': i, 's': f'str{i}'} for i in range(5))
     with pytest.warns(UserWarning, match=r"No 'error' column") as record_warnings:  # noqa: F841
-        df = as_dataframe(it)
+        df: DataFrameT = as_dataframe(it)
         # todo test other error col policies
-    assert list(df.columns) == ['i', 's', 'error']
 
-    assert len(as_dataframe([])) == 0
+    # fmt: off
+    assert_frame_equal(
+        df,
+        pd.DataFrame({
+            'i'    : [0     , 1     , 2     , 3     , 4     ],
+            's'    : ['str0', 'str1', 'str2', 'str3', 'str4'],
+            # NOTE: error column is always added
+            'error': [None  , None  , None  , None  , None  ],
+        }),
+    )
+    # fmt: on
+    assert_frame_equal(as_dataframe([]), pd.DataFrame(columns=['error']))
 
-    from dataclasses import dataclass
+    df2: DataFrameT = as_dataframe([], schema=_X)
+    assert_frame_equal(
+        df2,
+        # FIXME hmm. x column type should be an int?? and error should be string (or object??)
+        pd.DataFrame(columns=['x', 'error']),
+    )
 
-    @dataclass
-    class X:
-        x: int
+    @dataclasses.dataclass
+    class S:
+        value: str
 
-    # makes sense to specify the schema so the downstream program doesn't fail in case of empty iterable
-    df = as_dataframe([], schema=X)
-    assert list(df.columns) == ['x', 'error']
+    def it2() -> Iterator[Res[S]]:
+        yield S(value='test')
+        yield RuntimeError('i failed')
+
+    df = as_dataframe(it2())
+    # fmt: off
+    assert_frame_equal(
+        df,
+        pd.DataFrame(data={
+            'value': ['test', np.nan                    ],
+            'error': [np.nan, 'RuntimeError: i failed\n'],
+            'dt'   : [np.nan, np.nan                    ],
+        }).astype(dtype={'dt': 'float'}),  # FIXME should be datetime64 as below
+    )
+    # fmt: on
+
+    def it3() -> Iterator[Res[S]]:
+        yield S(value='aba')
+        yield RuntimeError('whoops')
+        yield S(value='cde')
+        yield RuntimeError('exception with datetime', fromisoformat('2024-08-19T22:47:01Z'))
+
+    df = as_dataframe(it3())
+
+    # fmt: off
+    assert_frame_equal(df, pd.DataFrame(data={
+        'value': ['aba' , np.nan                  , 'cde' , np.nan                     ],
+        'error': [np.nan, 'RuntimeError: whoops\n', np.nan, "RuntimeError: ('exception with datetime', datetime.datetime(2024, 8, 19, 22, 47, 1, tzinfo=datetime.timezone.utc))\n"],
+        # note: dt column is added even if errors don't have an associated datetime
+        'dt'   : [np.nan, np.nan                  , np.nan, '2024-08-19 22:47:01+00:00'],
+    }).astype(dtype={'dt': 'datetime64[ns, UTC]'}))
+    # fmt: on

my/core/preinit.py

@@ -1,8 +1,14 @@
 from pathlib import Path
 
+
+# todo preinit isn't really a good name? it's only in a separate file because
+# - it's imported from my.core.init (so we wan't to keep this file as small/reliable as possible, hence not common or something)
+# - we still need this function in __main__, so has to be separate from my/core/init.py
 def get_mycfg_dir() -> Path:
-    import appdirs # type: ignore[import]
     import os
+
+    import appdirs  # type: ignore[import-untyped]
+
     # not sure if that's necessary, i.e. could rely on PYTHONPATH instead
     # on the other hand, by using MY_CONFIG we are guaranteed to load it from the desired path?
     mvar = os.environ.get('MY_CONFIG')

my/core/pytest.py

@@ -0,0 +1,24 @@
+"""
+Helpers to prevent depending on pytest in runtime
+"""
+
+from .internal import assert_subpackage
+
+assert_subpackage(__name__)
+
+import sys
+import typing
+
+under_pytest = 'pytest' in sys.modules
+
+if typing.TYPE_CHECKING or under_pytest:
+    import pytest
+
+    parametrize = pytest.mark.parametrize
+else:
+
+    def parametrize(*_args, **_kwargs):
+        def wrapper(f):
+            return f
+
+        return wrapper

my/core/query.py

@@ -5,20 +5,29 @@ The main entrypoint to this library is the 'select' function below; try:
 python3 -c "from my.core.query import select; help(select)"
 """
 
+from __future__ import annotations
+
 import dataclasses
 import importlib
 import inspect
 import itertools
+from collections.abc import Iterable, Iterator
 from datetime import datetime
-from typing import TypeVar, Tuple, Optional, Union, Callable, Iterable, Iterator, Dict, Any, NamedTuple, List
+from typing import (
+    Any,
+    Callable,
+    NamedTuple,
+    Optional,
+    TypeVar,
+)
 
 import more_itertools
 
-from .common import is_namedtuple
+from . import error as err
 from .error import Res, unwrap
+from .types import is_namedtuple
 from .warnings import low
 
-
 T = TypeVar("T")
 ET = Res[T]
 
@@ -26,7 +35,7 @@ ET = Res[T]
 U = TypeVar("U")
 # In a perfect world, the return value from a OrderFunc would just be U,
 # not Optional[U]. However, since this has to deal with so many edge
-# cases, theres a possibility that the functions generated by
+# cases, there's a possibility that the functions generated by
 # _generate_order_by_func can't find an attribute
 OrderFunc = Callable[[ET], Optional[U]]
 Where = Callable[[ET], bool]
@@ -39,6 +48,7 @@ class Unsortable(NamedTuple):
 
 class QueryException(ValueError):
     """Used to differentiate query-related errors, so the CLI interface is more expressive"""
+
     pass
 
 
@@ -51,16 +61,16 @@ def locate_function(module_name: str, function_name: str) -> Callable[[], Iterab
     """
     try:
         mod = importlib.import_module(module_name)
-        for (fname, func) in inspect.getmembers(mod, inspect.isfunction):
+        for fname, f in inspect.getmembers(mod, inspect.isfunction):
             if fname == function_name:
-                return func
+                return f
         # in case the function is defined dynamically,
         # like with a globals().setdefault(...) or a module-level __getattr__ function
         func = getattr(mod, function_name, None)
         if func is not None and callable(func):
             return func
     except Exception as e:
-        raise QueryException(str(e))
+        raise QueryException(str(e))  # noqa: B904
     raise QueryException(f"Could not find function '{function_name}' in '{module_name}'")
 
 
@@ -74,7 +84,7 @@ def locate_qualified_function(qualified_name: str) -> Callable[[], Iterable[ET]]
     return locate_function(qualified_name[:rdot_index], qualified_name[rdot_index + 1 :])
 
 
-def attribute_func(obj: T, where: Where, default: Optional[U] = None) -> Optional[OrderFunc]:
+def attribute_func(obj: T, where: Where, default: U | None = None) -> OrderFunc | None:
     """
     Attempts to find an attribute which matches the 'where_function' on the object,
     using some getattr/dict checks. Returns a function which when called with
@@ -102,7 +112,7 @@ def attribute_func(obj: T, where: Where, default: Optional[U] = None) -> Optiona
             if where(v):
                 return lambda o: o.get(k, default)  # type: ignore[union-attr]
     elif dataclasses.is_dataclass(obj):
-        for (field_name, _annotation) in obj.__annotations__.items():
+        for field_name in obj.__annotations__.keys():
             if where(getattr(obj, field_name)):
                 return lambda o: getattr(o, field_name, default)
     elif is_namedtuple(obj):
@@ -120,11 +130,12 @@ def attribute_func(obj: T, where: Where, default: Optional[U] = None) -> Optiona
 
 def _generate_order_by_func(
     obj_res: Res[T],
-        key: Optional[str] = None,
-        where_function: Optional[Where] = None,
-        default: Optional[U] = None,
+    *,
+    key: str | None = None,
+    where_function: Where | None = None,
+    default: U | None = None,
     force_unsortable: bool = False,
-) -> Optional[OrderFunc]:
+) -> OrderFunc | None:
     """
     Accepts an object Res[T] (Instance of some class or Exception)
 
@@ -177,7 +188,7 @@ pass 'drop_exceptions' to ignore exceptions""")
                 return lambda o: o.get(key, default)  # type: ignore[union-attr]
         else:
             if hasattr(obj, key):
-                return lambda o: getattr(o, key, default)  # type: ignore[arg-type]
+                return lambda o: getattr(o, key, default)
 
     # Note: if the attribute you're ordering by is an Optional type,
     # and on some objects it'll return None, the getattr(o, field_name, default) won't
@@ -189,7 +200,7 @@ pass 'drop_exceptions' to ignore exceptions""")
 
     # user must provide either a key or a where predicate
     if where_function is not None:
-        func: Optional[OrderFunc] = attribute_func(obj, where_function, default)
+        func: OrderFunc | None = attribute_func(obj, where_function, default)
         if func is not None:
             return func
 
@@ -205,29 +216,13 @@ pass 'drop_exceptions' to ignore exceptions""")
         return None  # couldn't compute a OrderFunc for this class/instance
 
 
-def _drop_exceptions(itr: Iterator[ET]) -> Iterator[T]:
-    """Return non-errors from the iterable"""
-    for o in itr:
-        if isinstance(o, Exception):
-            continue
-        yield o
-
-
-def _raise_exceptions(itr: Iterable[ET]) -> Iterator[T]:
-    """Raise errors from the iterable, stops the select function"""
-    for o in itr:
-        if isinstance(o, Exception):
-            raise o
-        yield o
-
-
 # currently using the 'key set' as a proxy for 'this is the same type of thing'
 def _determine_order_by_value_key(obj_res: ET) -> Any:
     """
     Returns either the class, or a tuple of the dictionary keys
     """
     key = obj_res.__class__
-    if key == dict:
+    if key is dict:
         # assuming same keys signify same way to determine ordering
         return tuple(obj_res.keys())  # type: ignore[union-attr]
     return key
@@ -244,8 +239,8 @@ def _drop_unsorted(itr: Iterator[ET], orderfunc: OrderFunc) -> Iterator[ET]:
 
 
 # try getting the first value from the iterator
-# similar to my.core.common.warn_if_empty? this doesnt go through the whole iterator though
-def _peek_iter(itr: Iterator[ET]) -> Tuple[Optional[ET], Iterator[ET]]:
+# similar to my.core.common.warn_if_empty? this doesn't go through the whole iterator though
+def _peek_iter(itr: Iterator[ET]) -> tuple[ET | None, Iterator[ET]]:
     itr = more_itertools.peekable(itr)
     try:
         first_item = itr.peek()
@@ -256,9 +251,9 @@ def _peek_iter(itr: Iterator[ET]) -> Tuple[Optional[ET], Iterator[ET]]:
 
 
 # similar to 'my.core.error.sort_res_by'?
-def _wrap_unsorted(itr: Iterator[ET], orderfunc: OrderFunc) -> Tuple[Iterator[Unsortable], Iterator[ET]]:
-    unsortable: List[Unsortable] = []
-    sortable: List[ET] = []
+def _wrap_unsorted(itr: Iterator[ET], orderfunc: OrderFunc) -> tuple[Iterator[Unsortable], Iterator[ET]]:
+    unsortable: list[Unsortable] = []
+    sortable: list[ET] = []
     for o in itr:
         # if input to select was another select
         if isinstance(o, Unsortable):
@@ -276,10 +271,11 @@ def _wrap_unsorted(itr: Iterator[ET], orderfunc: OrderFunc) -> Tuple[Iterator[Un
 # the second being items for which orderfunc returned a non-none value
 def _handle_unsorted(
     itr: Iterator[ET],
+    *,
     orderfunc: OrderFunc,
     drop_unsorted: bool,
     wrap_unsorted: bool
-) -> Tuple[Iterator[Unsortable], Iterator[ET]]:
+) -> tuple[Iterator[Unsortable], Iterator[ET]]:
     # prefer drop_unsorted to wrap_unsorted, if both were present
     if drop_unsorted:
         return iter([]), _drop_unsorted(itr, orderfunc)
@@ -290,20 +286,20 @@ def _handle_unsorted(
         return iter([]), itr
 
 
-# handles creating an order_value functon, using a lookup for
+# handles creating an order_value function, using a lookup for
 # different types. ***This consumes the iterator***, so
 # you should definitely itertoolts.tee it beforehand
 # as to not exhaust the values
-def _generate_order_value_func(itr: Iterator[ET], order_value: Where, default: Optional[U] = None) -> OrderFunc:
+def _generate_order_value_func(itr: Iterator[ET], order_value: Where, default: U | None = None) -> OrderFunc:
     # TODO: add a kwarg to force lookup for every item? would sort of be like core.common.guess_datetime then
-    order_by_lookup: Dict[Any, OrderFunc] = {}
+    order_by_lookup: dict[Any, OrderFunc] = {}
 
     # need to go through a copy of the whole iterator here to
     # pre-generate functions to support sorting mixed types
     for obj_res in itr:
         key: Any = _determine_order_by_value_key(obj_res)
         if key not in order_by_lookup:
-            keyfunc: Optional[OrderFunc] = _generate_order_by_func(
+            keyfunc: OrderFunc | None = _generate_order_by_func(
                 obj_res,
                 where_function=order_value,
                 default=default,
@@ -324,12 +320,12 @@ def _generate_order_value_func(itr: Iterator[ET], order_value: Where, default: O
 def _handle_generate_order_by(
     itr,
     *,
-    order_by: Optional[OrderFunc] = None,
-    order_key: Optional[str] = None,
-    order_value: Optional[Where] = None,
-    default: Optional[U] = None,
-) -> Tuple[Optional[OrderFunc], Iterator[ET]]:
-    order_by_chosen: Optional[OrderFunc] = order_by  # if the user just supplied a function themselves
+    order_by: OrderFunc | None = None,
+    order_key: str | None = None,
+    order_value: Where | None = None,
+    default: U | None = None,
+) -> tuple[OrderFunc | None, Iterator[ET]]:
+    order_by_chosen: OrderFunc | None = order_by  # if the user just supplied a function themselves
     if order_by is not None:
         return order_by, itr
     if order_key is not None:
@@ -354,17 +350,19 @@ def _handle_generate_order_by(
 
 
 def select(
-    src: Union[Iterable[ET], Callable[[], Iterable[ET]]],
+    src: Iterable[ET] | Callable[[], Iterable[ET]],
     *,
-    where: Optional[Where] = None,
-    order_by: Optional[OrderFunc] = None,
-    order_key: Optional[str] = None,
-    order_value: Optional[Where] = None,
-    default: Optional[U] = None,
+    where: Where | None = None,
+    order_by: OrderFunc | None = None,
+    order_key: str | None = None,
+    order_value: Where | None = None,
+    default: U | None = None,
     reverse: bool = False,
-    limit: Optional[int] = None,
+    limit: int | None = None,
     drop_unsorted: bool = False,
     wrap_unsorted: bool = True,
+    warn_exceptions: bool = False,
+    warn_func: Callable[[Exception], None] | None = None,
     drop_exceptions: bool = False,
     raise_exceptions: bool = False,
 ) -> Iterator[ET]:
@@ -374,7 +372,7 @@ def select(
     by allowing you to provide custom predicates (functions) which can sort
     by a function, an attribute, dict key, or by the attributes values.
 
-    Since this supports mixed types, theres always a possibility
+    Since this supports mixed types, there's always a possibility
     of KeyErrors or AttributeErrors while trying to find some value to order by,
     so this provides multiple mechanisms to deal with that
 
@@ -408,7 +406,9 @@ def select(
     to copy the iterator in memory (using itertools.tee) to determine how to order it
     in memory
 
-    The 'drop_exceptions' and 'raise_exceptions' let you ignore or raise when the src contains exceptions
+    The 'drop_exceptions', 'raise_exceptions', 'warn_exceptions' let you ignore or raise
+    when the src contains exceptions. The 'warn_func' lets you provide a custom function
+    to call when an exception is encountered instead of using the 'warnings' module
 
     src:            an iterable of mixed types, or a function to be called,
                     as the input to this function
@@ -464,15 +464,18 @@ Will attempt to call iter() on the value""")
     try:
         itr: Iterator[ET] = iter(it)
     except TypeError as t:
-        raise QueryException("Could not convert input src to an Iterator: " + str(t))
+        raise QueryException("Could not convert input src to an Iterator: " + str(t))  # noqa: B904
 
     # if both drop_exceptions and drop_exceptions are provided for some reason,
     # should raise exceptions before dropping them
     if raise_exceptions:
-        itr = _raise_exceptions(itr)
+        itr = err.raise_exceptions(itr)
 
     if drop_exceptions:
-        itr = _drop_exceptions(itr)
+        itr = err.drop_exceptions(itr)
+
+    if warn_exceptions:
+        itr = err.warn_exceptions(itr, warn_func=warn_func)
 
     if where is not None:
         itr = filter(where, itr)
@@ -498,10 +501,15 @@ Will attempt to call iter() on the value""")
         # note: can't just attach sort unsortable values in the same iterable as the
         # other items because they don't have any lookups for order_key or functions
         # to handle items in the order_by_lookup dictionary
-        unsortable, itr = _handle_unsorted(itr, order_by_chosen, drop_unsorted, wrap_unsorted)
+        unsortable, itr = _handle_unsorted(
+            itr,
+            orderfunc=order_by_chosen,
+            drop_unsorted=drop_unsorted,
+            wrap_unsorted=wrap_unsorted,
+        )
 
         # run the sort, with the computed order by function
-        itr = iter(sorted(itr, key=order_by_chosen, reverse=reverse))  # type: ignore[arg-type, type-var]
+        itr = iter(sorted(itr, key=order_by_chosen, reverse=reverse))  # type: ignore[arg-type]
 
         # re-attach unsortable values to the front/back of the list
         if reverse:
@@ -589,7 +597,7 @@ def test_couldnt_determine_order() -> None:
     res = list(select(iter([object()]), order_value=lambda o: isinstance(o, datetime)))
     assert len(res) == 1
     assert isinstance(res[0], Unsortable)
-    assert type(res[0].obj) == object
+    assert type(res[0].obj) is object
 
 
 # same value type, different keys, with clashing keys
@@ -605,7 +613,7 @@ class _B(NamedTuple):
 
 # move these to tests/? They are re-used so much in the tests below,
 # not sure where the best place for these is
-def _mixed_iter() -> Iterator[Union[_A, _B]]:
+def _mixed_iter() -> Iterator[_A | _B]:
     yield _A(x=datetime(year=2009, month=5, day=10, hour=4, minute=10, second=1), y=5, z=10)
     yield _B(y=datetime(year=2015, month=5, day=10, hour=4, minute=10, second=1))
     yield _A(x=datetime(year=2005, month=5, day=10, hour=4, minute=10, second=1), y=10, z=2)
@@ -614,7 +622,7 @@ def _mixed_iter() -> Iterator[Union[_A, _B]]:
     yield _A(x=datetime(year=2005, month=4, day=10, hour=4, minute=10, second=1), y=2, z=-5)
 
 
-def _mixed_iter_errors() -> Iterator[Res[Union[_A, _B]]]:
+def _mixed_iter_errors() -> Iterator[Res[_A | _B]]:
     m = _mixed_iter()
     yield from itertools.islice(m, 0, 3)
     yield RuntimeError("Unhandled error!")
@@ -650,7 +658,7 @@ def test_wrap_unsortable() -> None:
 
     # by default, wrap unsortable
     res = list(select(_mixed_iter(), order_key="z"))
-    assert Counter(map(lambda t: type(t).__name__, res)) == Counter({"_A": 4, "Unsortable": 2})
+    assert Counter(type(t).__name__ for t in res) == Counter({"_A": 4, "Unsortable": 2})
 
 
 def test_disabled_wrap_unsorted() -> None:
@@ -669,7 +677,7 @@ def test_drop_unsorted() -> None:
     # test drop unsortable, should remove them before the 'sorted' call
     res = list(select(_mixed_iter(), order_key="z", wrap_unsorted=False, drop_unsorted=True))
     assert len(res) == 4
-    assert Counter(map(lambda t: type(t).__name__, res)) == Counter({"_A": 4})
+    assert Counter(type(t).__name__ for t in res) == Counter({"_A": 4})
 
 
 def test_drop_exceptions() -> None:
@@ -693,15 +701,16 @@ def test_raise_exceptions() -> None:
 
 def test_wrap_unsortable_with_error_and_warning() -> None:
 
-    import pytest
     from collections import Counter
 
+    import pytest
+
     # by default should wrap unsortable (error)
     with pytest.warns(UserWarning, match=r"encountered exception"):
         res = list(select(_mixed_iter_errors(), order_value=lambda o: isinstance(o, datetime)))
-    assert Counter(map(lambda t: type(t).__name__, res)) == Counter({"_A": 4, "_B": 2, "Unsortable": 1})
+    assert Counter(type(t).__name__ for t in res) == Counter({"_A": 4, "_B": 2, "Unsortable": 1})
     # compare the returned error wrapped in the Unsortable
-    returned_error = next((o for o in res if isinstance(o, Unsortable))).obj
+    returned_error = next(o for o in res if isinstance(o, Unsortable)).obj
     assert "Unhandled error!" == str(returned_error)
 
 
@@ -711,7 +720,7 @@ def test_order_key_unsortable() -> None:
 
     # both unsortable and items which dont match the order_by (order_key) in this case should be classified unsorted
     res = list(select(_mixed_iter_errors(), order_key="z"))
-    assert Counter(map(lambda t: type(t).__name__, res)) == Counter({"_A": 4, "Unsortable": 3})
+    assert Counter(type(t).__name__ for t in res) == Counter({"_A": 4, "Unsortable": 3})
 
 
 def test_order_default_param() -> None:
@@ -731,7 +740,7 @@ def test_no_recursive_unsortables() -> None:
     # select to select as input, wrapping unsortables the first time, second should drop them
     # reverse=True to send errors to the end, so the below order_key works
     res = list(select(_mixed_iter_errors(), order_key="z", reverse=True))
-    assert Counter(map(lambda t: type(t).__name__, res)) == Counter({"_A": 4, "Unsortable": 3})
+    assert Counter(type(t).__name__ for t in res) == Counter({"_A": 4, "Unsortable": 3})
 
     # drop_unsorted
     dropped = list(select(res, order_key="z", drop_unsorted=True))

my/core/query_range.py

@@ -7,27 +7,30 @@ filtered iterator
 See the select_range function below
 """
 
+from __future__ import annotations
+
 import re
 import time
-from functools import lru_cache
-from datetime import datetime, timedelta, date
-from typing import Callable, Iterator, NamedTuple, Optional, Any, Type
+from collections.abc import Iterator
+from datetime import date, datetime, timedelta
+from functools import cache
+from typing import Any, Callable, NamedTuple
 
 import more_itertools
 
+from .compat import fromisoformat
 from .query import (
-    QueryException,
-    select,
+    ET,
     OrderFunc,
+    QueryException,
     Where,
     _handle_generate_order_by,
-    ET,
+    select,
 )
 
-from .common import isoparse
-
-
-timedelta_regex = re.compile(r"^((?P<weeks>[\.\d]+?)w)?((?P<days>[\.\d]+?)d)?((?P<hours>[\.\d]+?)h)?((?P<minutes>[\.\d]+?)m)?((?P<seconds>[\.\d]+?)s)?$")
+timedelta_regex = re.compile(
+    r"^((?P<weeks>[\.\d]+?)w)?((?P<days>[\.\d]+?)d)?((?P<hours>[\.\d]+?)h)?((?P<minutes>[\.\d]+?)m)?((?P<seconds>[\.\d]+?)s)?$"
+)
 
 
 # https://stackoverflow.com/a/51916936
@@ -40,7 +43,7 @@ def parse_timedelta_string(timedelta_str: str) -> timedelta:
     if parts is None:
         raise ValueError(f"Could not parse time duration from {timedelta_str}.\nValid examples: '8h', '1w2d8h5m20s', '2m4s'")
     time_params = {name: float(param) for name, param in parts.groupdict().items() if param}
-    return timedelta(**time_params)  # type: ignore[arg-type]
+    return timedelta(**time_params)
 
 
 def parse_timedelta_float(timedelta_str: str) -> float:
@@ -73,19 +76,34 @@ def parse_datetime_float(date_str: str) -> float:
         return ds_float
     try:
         # isoformat - default format when you call str() on datetime
+        # this also parses dates like '2020-01-01'
         return datetime.fromisoformat(ds).timestamp()
     except ValueError:
         pass
     try:
-        return isoparse(ds).timestamp()
+        return fromisoformat(ds).timestamp()
     except (AssertionError, ValueError):
+        pass
+
+    try:
+        import dateparser
+    except ImportError:
+        pass
+    else:
+        # dateparser is a bit more lenient than the above, lets you type
+        # all sorts of dates as inputs
+        # https://github.com/scrapinghub/dateparser#how-to-use
+        res: datetime | None = dateparser.parse(ds, settings={"DATE_ORDER": "YMD"})
+        if res is not None:
+            return res.timestamp()
+
     raise QueryException(f"Was not able to parse {ds} into a datetime")
 
 
 # probably DateLike input? but a user could specify an order_key
 # which is an epoch timestamp or a float value which they
 # expect to be converted to a datetime to compare
-@lru_cache(maxsize=None)
+@cache
 def _datelike_to_float(dl: Any) -> float:
     if isinstance(dl, datetime):
         return dl.timestamp()
@@ -96,7 +114,7 @@ def _datelike_to_float(dl: Any) -> float:
         try:
             return parse_datetime_float(dl)
         except QueryException as q:
-            raise QueryException(f"While attempting to extract datetime from {dl}, to order by datetime:\n\n" + str(q))
+            raise QueryException(f"While attempting to extract datetime from {dl}, to order by datetime:\n\n" + str(q))  # noqa: B904
 
 
 class RangeTuple(NamedTuple):
@@ -117,11 +135,12 @@ class RangeTuple(NamedTuple):
             of the timeframe -- 'before'
         - before and after - anything after 'after' and before 'before', acts as a time range
     """
+
     # technically doesn't need to be Optional[Any],
     # just to make it more clear these can be None
-    after: Optional[Any]
-    before: Optional[Any]
-    within: Optional[Any]
+    after: Any | None
+    before: Any | None
+    within: Any | None
 
 
 Converter = Callable[[Any], Any]
@@ -132,14 +151,15 @@ def _parse_range(
     unparsed_range: RangeTuple,
     end_parser: Converter,
     within_parser: Converter,
-    parsed_range: Optional[RangeTuple] = None,
-    error_message: Optional[str] = None
-) -> Optional[RangeTuple]:
+    parsed_range: RangeTuple | None = None,
+    error_message: str | None = None,
+) -> RangeTuple | None:
 
     if parsed_range is not None:
         return parsed_range
 
     err_msg = error_message or RangeTuple.__doc__
+    assert err_msg is not None  # make mypy happy
     after, before, within = None, None, None
 
     none_count = more_itertools.ilen(filter(lambda o: o is None, list(unparsed_range)))
@@ -162,11 +182,11 @@ def _create_range_filter(
     end_parser: Converter,
     within_parser: Converter,
     attr_func: Where,
-    parsed_range: Optional[RangeTuple] = None,
-    default_before: Optional[Any] = None,
-    value_coercion_func: Optional[Converter] = None,
-    error_message: Optional[str] = None,
-) -> Optional[Where]:
+    parsed_range: RangeTuple | None = None,
+    default_before: Any | None = None,
+    value_coercion_func: Converter | None = None,
+    error_message: str | None = None,
+) -> Where | None:
     """
     Handles:
         - parsing the user input into values that are comparable to items the iterable returns
@@ -220,7 +240,7 @@ def _create_range_filter(
     # inclusivity here? Is [after, before) currently,
     # items are included on the lower bound but not the
     # upper bound
-    # typically used for datetimes so doesnt have to
+    # typically used for datetimes so doesn't have to
     # be exact in that case
     def generated_predicate(obj: Any) -> bool:
         ov: Any = attr_func(obj)
@@ -258,15 +278,17 @@ def _create_range_filter(
 def select_range(
     itr: Iterator[ET],
     *,
-    where: Optional[Where] = None,
-    order_key: Optional[str] = None,
-    order_value: Optional[Where] = None,
-    order_by_value_type: Optional[Type] = None,
-    unparsed_range: Optional[RangeTuple] = None,
+    where: Where | None = None,
+    order_key: str | None = None,
+    order_value: Where | None = None,
+    order_by_value_type: type | None = None,
+    unparsed_range: RangeTuple | None = None,
     reverse: bool = False,
-    limit: Optional[int] = None,
+    limit: int | None = None,
     drop_unsorted: bool = False,
     wrap_unsorted: bool = False,
+    warn_exceptions: bool = False,
+    warn_func: Callable[[Exception], None] | None = None,
     drop_exceptions: bool = False,
     raise_exceptions: bool = False,
 ) -> Iterator[ET]:
@@ -293,21 +315,30 @@ def select_range(
         unparsed_range = None
 
     # some operations to do before ordering/filtering
-    if drop_exceptions or raise_exceptions or where is not None:
-        # doesnt wrap unsortable items, because we pass no order related kwargs
-        itr = select(itr, where=where, drop_exceptions=drop_exceptions, raise_exceptions=raise_exceptions)
+    if drop_exceptions or raise_exceptions or where is not None or warn_exceptions:
+        # doesn't wrap unsortable items, because we pass no order related kwargs
+        itr = select(
+            itr,
+            where=where,
+            drop_exceptions=drop_exceptions,
+            raise_exceptions=raise_exceptions,
+            warn_exceptions=warn_exceptions,
+            warn_func=warn_func,
+        )
 
-    order_by_chosen: Optional[OrderFunc] = None
+    order_by_chosen: OrderFunc | None = None
 
     # if the user didn't specify an attribute to order value, but specified a type
     # we should search for on each value in the iterator
     if order_value is None and order_by_value_type is not None:
         # search for that type on the iterator object
-        order_value = lambda o: isinstance(o, order_by_value_type)  # type: ignore
+        order_value = lambda o: isinstance(o, order_by_value_type)
 
     # if the user supplied a order_key, and/or we've generated an order_value, create
     # the function that accesses that type on each value in the iterator
     if order_key is not None or order_value is not None:
+        # _generate_order_value_func internally here creates a copy of the iterator, which has to
+        # be consumed in-case we're sorting by mixed types
         order_by_chosen, itr = _handle_generate_order_by(itr, order_key=order_key, order_value=order_value)
         # signifies that itr is empty -- can early return here
         if order_by_chosen is None:
@@ -319,11 +350,11 @@ def select_range(
         if order_by_chosen is None:
             raise QueryException("""Can't order by range if we have no way to order_by!
 Specify a type or a key to order the value by""")
-        else:
+
         # force drop_unsorted=True so we can use _create_range_filter
         # sort the iterable by the generated order_by_chosen function
         itr = select(itr, order_by=order_by_chosen, drop_unsorted=True)
-            filter_func: Optional[Where]
+        filter_func: Where | None
         if order_by_value_type in [datetime, date]:
             filter_func = _create_range_filter(
                 unparsed_range=unparsed_range,
@@ -331,7 +362,8 @@ Specify a type or a key to order the value by""")
                 within_parser=parse_timedelta_float,
                 attr_func=order_by_chosen,  # type: ignore[arg-type]
                 default_before=time.time(),
-                    value_coercion_func=_datelike_to_float)
+                value_coercion_func=_datelike_to_float,
+            )
         elif order_by_value_type in [int, float]:
             # allow primitives to be converted using the default int(), float() callables
             filter_func = _create_range_filter(
@@ -340,7 +372,8 @@ Specify a type or a key to order the value by""")
                 within_parser=order_by_value_type,
                 attr_func=order_by_chosen,  # type: ignore[arg-type]
                 default_before=None,
-                    value_coercion_func=order_by_value_type)
+                value_coercion_func=order_by_value_type,
+            )
         else:
             # TODO: add additional kwargs to let the user sort by other values, by specifying the parsers?
             # would need to allow passing the end_parser, within parser, default before and value_coercion_func...
@@ -356,7 +389,7 @@ Specify a type or a key to order the value by""")
         #
         # this select is also run if the user didn't specify anything to
         # order by, and is just returning the data in the same order as
-        # as the srouce iterable
+        # as the source iterable
         # i.e. none of the range-related filtering code ran, this is just a select
         itr = select(itr,
                      order_by=order_by_chosen,
@@ -367,7 +400,7 @@ Specify a type or a key to order the value by""")
     return itr
 
 
-# re-use items from query for testing
+# reuse items from query for testing
 from .query import _A, _B, _Float, _mixed_iter_errors
 
 
@@ -447,8 +480,8 @@ def test_range_predicate() -> None:
     )
 
     # filter from 0 to 5
-    rn: Optional[RangeTuple] = RangeTuple("0", "5", None)
-    zero_to_five_filter: Optional[Where] = int_filter_func(unparsed_range=rn)
+    rn: RangeTuple = RangeTuple("0", "5", None)
+    zero_to_five_filter: Where | None = int_filter_func(unparsed_range=rn)
     assert zero_to_five_filter is not None
     # this is just a Where function, given some input it return True/False if the value is allowed
     assert zero_to_five_filter(3) is True
@@ -461,6 +494,7 @@ def test_range_predicate() -> None:
     rn = RangeTuple(None, 3, "3.5")
     assert list(filter(int_filter_func(unparsed_range=rn, attr_func=identity), src())) == ["0", "1", "2"]
 
+
 def test_parse_range() -> None:
 
     from functools import partial
@@ -483,7 +517,7 @@ def test_parse_range() -> None:
 
     assert res2 == RangeTuple(after=start_date.timestamp(), before=end_date.timestamp(), within=None)
 
-    # cant specify all three
+    # can't specify all three
     with pytest.raises(QueryException, match=r"Cannot specify 'after', 'before' and 'within'"):
         dt_parse_range(unparsed_range=RangeTuple(str(start_date), str(end_date.timestamp()), "7d"))
 
@@ -504,9 +538,8 @@ def test_parse_timedelta_string() -> None:
 
 
 def test_parse_datetime_float() -> None:
-
     pnow = parse_datetime_float("now")
-    sec_diff = abs((pnow - datetime.now().timestamp()))
+    sec_diff = abs(pnow - datetime.now().timestamp())
     # should probably never fail? could mock time.time
     # but there seems to be issues with doing that use C-libraries (as time.time) does
     # https://docs.python.org/3/library/unittest.mock-examples.html#partial-mocking

my/core/serialize.py

@@ -1,12 +1,15 @@
-import datetime
-import dataclasses
-from pathlib import Path
-from decimal import Decimal
-from typing import Any, Optional, Callable, NamedTuple
-from functools import lru_cache
+from __future__ import annotations
+
+import datetime
+from dataclasses import asdict, is_dataclass
+from decimal import Decimal
+from functools import cache
+from pathlib import Path
+from typing import Any, Callable, NamedTuple
 
-from .common import is_namedtuple
 from .error import error_to_json
+from .pytest import parametrize
+from .types import is_namedtuple
 
 # note: it would be nice to combine the 'asdict' and _default_encode to some function
 # that takes a complex python object and returns JSON-compatible fields, while still
@@ -16,6 +19,8 @@ from .error import error_to_json
 
 DefaultEncoder = Callable[[Any], Any]
 
+Dumps = Callable[[Any], str]
+
 
 def _default_encode(obj: Any) -> Any:
     """
@@ -33,8 +38,9 @@ def _default_encode(obj: Any) -> Any:
     # convert paths to their string representation
     if isinstance(obj, Path):
         return str(obj)
-    if dataclasses.is_dataclass(obj):
-        return dataclasses.asdict(obj)
+    if is_dataclass(obj):
+        assert not isinstance(obj, type)  # to help mypy
+        return asdict(obj)
     if isinstance(obj, Exception):
         return error_to_json(obj)
     # if something was stored as 'decimal', you likely
@@ -53,19 +59,18 @@ def _default_encode(obj: Any) -> Any:
 # could possibly run multiple times/raise warning if you provide different 'default'
 # functions or change the kwargs? The alternative is to maintain all of this at the module
 # level, which is just as annoying
-@lru_cache(maxsize=None)
+@cache
 def _dumps_factory(**kwargs) -> Callable[[Any], str]:
     use_default: DefaultEncoder = _default_encode
     # if the user passed an additional 'default' parameter,
     # try using that to serialize before before _default_encode
-    _additional_default: Optional[DefaultEncoder] = kwargs.get("default")
+    _additional_default: DefaultEncoder | None = kwargs.get("default")
     if _additional_default is not None and callable(_additional_default):
 
         def wrapped_default(obj: Any) -> Any:
+            assert _additional_default is not None
             try:
-                # hmm... shouldn't mypy know that _additional_default is not None here?
-                # assert _additional_default is not None
-                return _additional_default(obj)  # type: ignore[misc]
+                return _additional_default(obj)
             except TypeError:
                 # expected TypeError, signifies couldn't be encoded by custom
                 # serializer function. Try _default_encode from here
@@ -75,28 +80,35 @@ def _dumps_factory(**kwargs) -> Callable[[Any], str]:
 
     kwargs["default"] = use_default
 
+    prefer_factory: str | None = kwargs.pop('_prefer_factory', None)
+
+    def orjson_factory() -> Dumps | None:
         try:
             import orjson
+        except ModuleNotFoundError:
+            return None
 
         # todo: add orjson.OPT_NON_STR_KEYS? would require some bitwise ops
         # most keys are typically attributes from a NT/Dataclass,
         # so most seem to work: https://github.com/ijl/orjson#opt_non_str_keys
-        def _orjson_dumps(obj: Any) -> str:
+        def _orjson_dumps(obj: Any) -> str:  # TODO rename?
             # orjson returns json as bytes, encode to string
             return orjson.dumps(obj, **kwargs).decode('utf-8')
 
         return _orjson_dumps
-    except ModuleNotFoundError:
-        pass
 
+    def simplejson_factory() -> Dumps | None:
         try:
             from simplejson import dumps as simplejson_dumps
+        except ModuleNotFoundError:
+            return None
+
         # if orjson couldn't be imported, try simplejson
         # This is included for compatibility reasons because orjson
         # is rust-based and compiling on rarer architectures may not work
         # out of the box
         #
-        # unlike the builtin JSON modue which serializes NamedTuples as lists
+        # unlike the builtin JSON module which serializes NamedTuples as lists
         # (even if you provide a default function), simplejson correctly
         # serializes namedtuples to dictionaries
 
@@ -105,23 +117,42 @@ def _dumps_factory(**kwargs) -> Callable[[Any], str]:
 
         return _simplejson_dumps
 
-    except ModuleNotFoundError:
-        pass
-
+    def stdlib_factory() -> Dumps | None:
         import json
+
         from .warnings import high
 
-    high("You might want to install 'orjson' to support serialization for lots more types! If that does not work for you, you can install 'simplejson' instead")
+        high(
+            "You might want to install 'orjson' to support serialization for lots more types! If that does not work for you, you can install 'simplejson' instead"
+        )
 
         def _stdlib_dumps(obj: Any) -> str:
             return json.dumps(obj, **kwargs)
 
         return _stdlib_dumps
 
+    factories = {
+        'orjson': orjson_factory,
+        'simplejson': simplejson_factory,
+        'stdlib': stdlib_factory,
+    }
+
+    if prefer_factory is not None:
+        factory = factories[prefer_factory]
+        res = factory()
+        assert res is not None, prefer_factory
+        return res
+
+    for factory in factories.values():
+        res = factory()
+        if res is not None:
+            return res
+    raise RuntimeError("Should not happen!")
+
 
 def dumps(
     obj: Any,
-    default: Optional[DefaultEncoder] = None,
+    default: DefaultEncoder | None = None,
     **kwargs,
 ) -> str:
     """
@@ -154,10 +185,19 @@ def dumps(
     return _dumps_factory(default=default, **kwargs)(obj)
 
 
-def test_serialize_fallback() -> None:
-    import json as jsn  # dont cause possible conflicts with module code
+@parametrize('factory', ['orjson', 'simplejson', 'stdlib'])
+def test_dumps(factory: str) -> None:
+    import pytest
 
-    # cant use a namedtuple here, since the default json.dump serializer
+    orig_dumps = globals()['dumps']  # hack to prevent error from using local variable before declaring
+
+    def dumps(*args, **kwargs) -> str:
+        kwargs['_prefer_factory'] = factory
+        return orig_dumps(*args, **kwargs)
+
+    import json as json_builtin  # dont cause possible conflicts with module code
+
+    # can't use a namedtuple here, since the default json.dump serializer
     # serializes namedtuples as tuples, which become arrays
     # just test with an array of mixed objects
     X = [5, datetime.timedelta(seconds=5.0)]
@@ -166,36 +206,12 @@ def test_serialize_fallback() -> None:
     # the lru_cache'd warning may have already been sent,
     # so checking may be nondeterministic?
     import warnings
+
     with warnings.catch_warnings():
         warnings.simplefilter("ignore")
-        res = jsn.loads(dumps(X))
+        res = json_builtin.loads(dumps(X))
         assert res == [5, 5.0]
 
-
-# this needs to be defined here to prevent a mypy bug
-# see https://github.com/python/mypy/issues/7281
-class _A(NamedTuple):
-    x: int
-    y: float
-
-
-def test_nt_serialize() -> None:
-    import json as jsn  # dont cause possible conflicts with module code
-    import orjson  # import to make sure this is installed
-
-    res: str = dumps(_A(x=1, y=2.0))
-    assert res == '{"x":1,"y":2.0}'
-
-    # test orjson option kwarg
-    data = {datetime.date(year=1970, month=1, day=1): 5}
-    res = jsn.loads(dumps(data, option=orjson.OPT_NON_STR_KEYS))
-    assert res == {'1970-01-01': 5}
-
-
-def test_default_serializer() -> None:
-    import pytest
-    import json as jsn  # dont cause possible conflicts with module code
-
     class Unserializable:
         def __init__(self, x: int):
             self.x = x
@@ -209,17 +225,37 @@ def test_default_serializer() -> None:
         def _serialize(self) -> Any:
             return {"x": self.x, "y": self.y}
 
-    res = jsn.loads(dumps(WithUnderscoreSerialize(6)))
+    res = json_builtin.loads(dumps(WithUnderscoreSerialize(6)))
     assert res == {"x": 6, "y": 6.0}
 
     # test passing additional 'default' func
     def _serialize_with_default(o: Any) -> Any:
         if isinstance(o, Unserializable):
             return {"x": o.x, "y": o.y}
-        raise TypeError("Couldnt serialize")
+        raise TypeError("Couldn't serialize")
 
     # this serializes both Unserializable, which is a custom type otherwise
     # not handled, and timedelta, which is handled by the '_default_encode'
     # in the 'wrapped_default' function
-    res2 = jsn.loads(dumps(Unserializable(10), default=_serialize_with_default))
+    res2 = json_builtin.loads(dumps(Unserializable(10), default=_serialize_with_default))
     assert res2 == {"x": 10, "y": 10.0}
+
+    if factory == 'orjson':
+        import orjson
+
+        # test orjson option kwarg
+        data = {datetime.date(year=1970, month=1, day=1): 5}
+        res2 = json_builtin.loads(dumps(data, option=orjson.OPT_NON_STR_KEYS))
+        assert res2 == {'1970-01-01': 5}
+
+
+@parametrize('factory', ['orjson', 'simplejson'])
+def test_dumps_namedtuple(factory: str) -> None:
+    import json as json_builtin  # dont cause possible conflicts with module code
+
+    class _A(NamedTuple):
+        x: int
+        y: float
+
+    res: str = dumps(_A(x=1, y=2.0), _prefer_factory=factory)
+    assert json_builtin.loads(res) == {'x': 1, 'y': 2.0}

my/core/source.py

@@ -3,9 +3,12 @@ Decorator to gracefully handle importing a data source, or warning
 and yielding nothing (or a default) when its not available
 """
 
-from functools import wraps
-from typing import Any, Iterator, TypeVar, Callable, Optional, Iterable
+from __future__ import annotations
+
 import warnings
+from collections.abc import Iterable, Iterator
+from functools import wraps
+from typing import Any, Callable, TypeVar
 
 from .warnings import medium
 
@@ -26,8 +29,8 @@ _DEFAULT_ITR = ()
 def import_source(
     *,
     default: Iterable[T] = _DEFAULT_ITR,
-    module_name: Optional[str] = None,
-    help_url: Optional[str] = None,
+    module_name: str | None = None,
+    help_url: str | None = None,
 ) -> Callable[..., Callable[..., Iterator[T]]]:
     """
     doesn't really play well with types, but is used to catch
@@ -50,6 +53,7 @@ def import_source(
             except (ImportError, AttributeError) as err:
                 from . import core_config as CC
                 from .error import warn_my_config_import_error
+
                 suppressed_in_conf = False
                 if module_name is not None and CC.config._is_module_active(module_name) is False:
                     suppressed_in_conf = True
@@ -61,16 +65,18 @@ def import_source(
                         warnings.warn(f"""If you don't want to use this module, to hide this message, add '{module_name}' to your core config disabled_modules in your config, like:
 
 class core:
-    disabled_modules = [{repr(module_name)}]
-""")
+    disabled_modules = [{module_name!r}]
+""", stacklevel=1)
                     # try to check if this is a config error or based on dependencies not being installed
                     if isinstance(err, (ImportError, AttributeError)):
-                        matched_config_err = warn_my_config_import_error(err, help_url=help_url)
+                        matched_config_err = warn_my_config_import_error(err, module_name=module_name, help_url=help_url)
                         # if we determined this wasn't a config error, and it was an attribute error
                         # it could be *any* attribute error -- we should raise this since its otherwise a fatal error
                         # from some code in the module failing
                         if not matched_config_err and isinstance(err, AttributeError):
                             raise err
                 yield from default
+
         return wrapper
+
     return decorator

my/core/sqlite.py

@@ -1,16 +1,19 @@
-from .common import assert_subpackage; assert_subpackage(__name__)
+from __future__ import annotations
 
+from .internal import assert_subpackage  # noqa: I001
+
+assert_subpackage(__name__)
 
-from contextlib import contextmanager
-from pathlib import Path
 import shutil
 import sqlite3
+from collections.abc import Iterator
+from contextlib import contextmanager
+from pathlib import Path
 from tempfile import TemporaryDirectory
-from typing import Tuple, Any, Iterator, Callable, Optional, Union
+from typing import Any, Callable, Literal, Union, overload
 
-
-from .common import PathIsh, assert_never
-from .compat import Literal
+from .common import PathIsh
+from .compat import assert_never
 
 
 def sqlite_connect_immutable(db: PathIsh) -> sqlite3.Connection:
@@ -22,7 +25,8 @@ def test_sqlite_connect_immutable(tmp_path: Path) -> None:
     with sqlite3.connect(db) as conn:
         conn.execute('CREATE TABLE testtable (col)')
 
-    import pytest  # type: ignore
+    import pytest
+
     with pytest.raises(sqlite3.OperationalError, match='readonly database'):
         with sqlite_connect_immutable(db) as conn:
             conn.execute('DROP TABLE testtable')
@@ -34,15 +38,17 @@ def test_sqlite_connect_immutable(tmp_path: Path) -> None:
 
 SqliteRowFactory = Callable[[sqlite3.Cursor, sqlite3.Row], Any]
 
+
 def dict_factory(cursor, row):
     fields = [column[0] for column in cursor.description]
-    return {key: value for key, value in zip(fields, row)}
+    return dict(zip(fields, row))
 
 
 Factory = Union[SqliteRowFactory, Literal['row', 'dict']]
 
+
 @contextmanager
-def sqlite_connection(db: PathIsh, *, immutable: bool=False, row_factory: Optional[Factory]=None) -> Iterator[sqlite3.Connection]:
+def sqlite_connection(db: PathIsh, *, immutable: bool = False, row_factory: Factory | None = None) -> Iterator[sqlite3.Connection]:
     dbp = f'file:{db}'
     # https://www.sqlite.org/draft/uri.html#uriimmutable
     if immutable:
@@ -86,45 +92,88 @@ def sqlite_copy_and_open(db: PathIsh) -> sqlite3.Connection:
         for p in tocopy:
             shutil.copy(p, tdir / p.name)
         with sqlite3.connect(str(tdir / dp.name)) as conn:
-            from .compat import sqlite_backup
-            sqlite_backup(source=conn, dest=dest)
+            conn.backup(target=dest)
         conn.close()
     return dest
 
 
 # NOTE hmm, so this kinda works
 # V = TypeVar('V', bound=Tuple[Any, ...])
-# def select(cols: V, rest: str, *, db: sqlite3.Connetion) -> Iterator[V]:
+# def select(cols: V, rest: str, *, db: sqlite3.Connection) -> Iterator[V]:
 # but sadly when we pass columns (Tuple[str, ...]), it seems to bind this type to V?
 # and then the return type ends up as Iterator[Tuple[str, ...]], which isn't desirable :(
 # a bit annoying to have this copy-pasting, but hopefully not a big issue
 
-from typing import overload
+# fmt: off
 @overload
-def select(cols: Tuple[str                                   ], rest: str, *, db: sqlite3.Connection) -> \
-        Iterator[Tuple[Any                                   ]]: ...
+def select(cols: tuple[str                                   ], rest: str, *, db: sqlite3.Connection) -> \
+        Iterator[tuple[Any                                   ]]: ...
 @overload
-def select(cols: Tuple[str, str                              ], rest: str, *, db: sqlite3.Connection) -> \
-        Iterator[Tuple[Any, Any                              ]]: ...
+def select(cols: tuple[str, str                              ], rest: str, *, db: sqlite3.Connection) -> \
+        Iterator[tuple[Any, Any                              ]]: ...
 @overload
-def select(cols: Tuple[str, str, str                         ], rest: str, *, db: sqlite3.Connection) -> \
-        Iterator[Tuple[Any, Any, Any                         ]]: ...
+def select(cols: tuple[str, str, str                         ], rest: str, *, db: sqlite3.Connection) -> \
+        Iterator[tuple[Any, Any, Any                         ]]: ...
 @overload
-def select(cols: Tuple[str, str, str, str                    ], rest: str, *, db: sqlite3.Connection) -> \
-        Iterator[Tuple[Any, Any, Any, Any                    ]]: ...
+def select(cols: tuple[str, str, str, str                    ], rest: str, *, db: sqlite3.Connection) -> \
+        Iterator[tuple[Any, Any, Any, Any                    ]]: ...
 @overload
-def select(cols: Tuple[str, str, str, str, str               ], rest: str, *, db: sqlite3.Connection) -> \
-        Iterator[Tuple[Any, Any, Any, Any, Any               ]]: ...
+def select(cols: tuple[str, str, str, str, str               ], rest: str, *, db: sqlite3.Connection) -> \
+        Iterator[tuple[Any, Any, Any, Any, Any               ]]: ...
 @overload
-def select(cols: Tuple[str, str, str, str, str, str          ], rest: str, *, db: sqlite3.Connection) -> \
-        Iterator[Tuple[Any, Any, Any, Any, Any, Any          ]]: ...
+def select(cols: tuple[str, str, str, str, str, str          ], rest: str, *, db: sqlite3.Connection) -> \
+        Iterator[tuple[Any, Any, Any, Any, Any, Any          ]]: ...
 @overload
-def select(cols: Tuple[str, str, str, str, str, str, str     ], rest: str, *, db: sqlite3.Connection) -> \
-        Iterator[Tuple[Any, Any, Any, Any, Any, Any, Any     ]]: ...
+def select(cols: tuple[str, str, str, str, str, str, str     ], rest: str, *, db: sqlite3.Connection) -> \
+        Iterator[tuple[Any, Any, Any, Any, Any, Any, Any     ]]: ...
 @overload
-def select(cols: Tuple[str, str, str, str, str, str, str, str], rest: str, *, db: sqlite3.Connection) -> \
-        Iterator[Tuple[Any, Any, Any, Any, Any, Any, Any, Any]]: ...
+def select(cols: tuple[str, str, str, str, str, str, str, str], rest: str, *, db: sqlite3.Connection) -> \
+        Iterator[tuple[Any, Any, Any, Any, Any, Any, Any, Any]]: ...
+# fmt: on
 
 def select(cols, rest, *, db):
     # db arg is last cause that results in nicer code formatting..
     return db.execute('SELECT ' + ','.join(cols) + ' ' + rest)
+
+
+class SqliteTool:
+    def __init__(self, connection: sqlite3.Connection) -> None:
+        self.connection = connection
+
+    def _get_sqlite_master(self) -> dict[str, str]:
+        res = {}
+        for c in self.connection.execute('SELECT name, type FROM sqlite_master'):
+            [name, type_] = c
+            assert type_ in {'table', 'index', 'view', 'trigger'}, (name, type_)  # just in case
+            res[name] = type_
+        return res
+
+    def get_table_names(self) -> list[str]:
+        master = self._get_sqlite_master()
+        res = []
+        for name, type_ in master.items():
+            if type_ != 'table':
+                continue
+            res.append(name)
+        return res
+
+    def get_table_schema(self, name: str) -> dict[str, str]:
+        """
+        Returns map from column name to column type
+
+        NOTE: Sometimes this doesn't work if the db has some extensions (e.g. happens for facebook apps)
+              In this case you might still be able to use get_table_names
+        """
+        schema: dict[str, str] = {}
+        for row in self.connection.execute(f'PRAGMA table_info(`{name}`)'):
+            col   = row[1]
+            type_ = row[2]
+            # hmm, somewhere between 3.34.1 and 3.37.2, sqlite started normalising type names to uppercase
+            # let's do this just in case since python < 3.10 are using the old version
+            # e.g. it could have returned 'blob' and that would confuse blob check (see _check_allowed_blobs)
+            type_ = type_.upper()
+            schema[col] = type_
+        return schema
+
+    def get_table_schemas(self) -> dict[str, dict[str, str]]:
+        return {name: self.get_table_schema(name) for name in self.get_table_names()}

my/core/stats.py

@@ -1,41 +1,219 @@
 '''
 Helpers for hpi doctor/stats functionality.
 '''
-import collections
+
+from __future__ import annotations
+
+import collections.abc
 import importlib
 import inspect
-import sys
 import typing
-from typing import Optional, Callable, Any, Iterator, Sequence, Dict, List
+from collections.abc import Iterable, Iterator, Sequence
+from contextlib import contextmanager
+from datetime import datetime
+from pathlib import Path
+from types import ModuleType
+from typing import (
+    Any,
+    Callable,
+    Protocol,
+    cast,
+)
 
-from .common import StatsFun, Stats, stat
+from .types import asdict
+
+Stats = dict[str, Any]
+
+
+class StatsFun(Protocol):
+    def __call__(self, *, quick: bool = False) -> Stats: ...
+
+
+# global state that turns on/off quick stats
+# can use the 'quick_stats' contextmanager
+# to enable/disable this in cli so that module 'stats'
+# functions don't have to implement custom 'quick' logic
+QUICK_STATS = False
+
+
+# in case user wants to use the stats functions/quick option
+# elsewhere -- can use this decorator instead of editing
+# the global state directly
+@contextmanager
+def quick_stats():
+    global QUICK_STATS
+    prev = QUICK_STATS
+    try:
+        QUICK_STATS = True
+        yield
+    finally:
+        QUICK_STATS = prev
+
+
+def stat(
+    func: Callable[[], Iterable[Any]] | Iterable[Any],
+    *,
+    quick: bool = False,
+    name: str | None = None,
+) -> Stats:
+    """
+    Extracts various statistics from a passed iterable/callable, e.g.:
+    - number of items
+    - first/last item
+    - timestamps associated with first/last item
+
+    If quick is set, then only first 100 items of the iterable will be processed
+    """
+    if callable(func):
+        fr = func()
+        if hasattr(fr, '__enter__') and hasattr(fr, '__exit__'):
+            # context managers has Iterable type, but they aren't data providers
+            #  sadly doesn't look like there is a way to tell from typing annotations
+            # Ideally we'd detect this in is_data_provider...
+            #  but there is no way of knowing without actually calling it first :(
+            return {}
+        fname = func.__name__
+    else:
+        # meh. means it's just a list.. not sure how to generate a name then
+        fr = func
+        fname = f'unnamed_{id(fr)}'
+    type_name = type(fr).__name__
+    extras = {}
+    if type_name == 'DataFrame':
+        # dynamic, because pandas is an optional dependency..
+        df = cast(Any, fr)  # todo ugh, not sure how to annotate properly
+        df = df.reset_index()
+
+        fr = df.to_dict(orient='records')
+
+        dtypes = df.dtypes.to_dict()
+        extras['dtypes'] = dtypes
+
+    res = _stat_iterable(fr, quick=quick)
+    res.update(extras)
+
+    stat_name = name if name is not None else fname
+    return {
+        stat_name: res,
+    }
+
+
+def test_stat() -> None:
+    # the bulk of testing is in test_stat_iterable
+
+    # works with 'anonymous' lists
+    res = stat([1, 2, 3])
+    [(name, v)] = res.items()
+    # note: name will be a little funny since anonymous list doesn't have one
+    assert v == {'count': 3}
+    #
+
+    # works with functions:
+    def fun():
+        return [4, 5, 6]
+
+    assert stat(fun) == {'fun': {'count': 3}}
+    #
+
+    # context managers are technically iterable
+    #  , but usually we wouldn't want to compute stats for them
+    # this is mainly intended for guess_stats,
+    #  since it can't tell whether the function is a ctx manager without calling it
+    @contextmanager
+    def cm():
+        yield 1
+        yield 3
+
+    assert stat(cm) == {}  # type: ignore[arg-type]
+    #
+
+    # works with pandas dataframes
+    import numpy as np
+    import pandas as pd
+
+    def df() -> pd.DataFrame:
+        dates = pd.date_range(start='2024-02-10 08:00', end='2024-02-11 16:00', freq='5h')
+        return pd.DataFrame([f'value{i}' for i, _ in enumerate(dates)], index=dates, columns=['value'])
+
+    assert stat(df) == {
+        'df': {
+            'count': 7,
+            'dtypes': {
+                'index': np.dtype('<M8[ns]'),
+                'value': np.dtype('O'),
+            },
+            'first': pd.Timestamp('2024-02-10 08:00'),
+            'last': pd.Timestamp('2024-02-11 14:00'),
+        },
+    }
+    #
+
+
+def get_stats(module_name: str, *, guess: bool = False) -> StatsFun | None:
+    stats: StatsFun | None = None
+    try:
+        module = importlib.import_module(module_name)
+    except Exception:
+        return None
+    stats = getattr(module, 'stats', None)
+    if stats is None:
+        stats = guess_stats(module)
+    return stats
 
 
 # TODO maybe could be enough to annotate OUTPUTS or something like that?
 # then stats could just use them as hints?
-def guess_stats(module_name: str, quick: bool=False) -> Optional[StatsFun]:
-    providers = guess_data_providers(module_name)
+def guess_stats(module: ModuleType) -> StatsFun | None:
+    """
+    If the module doesn't have explicitly defined 'stat' function,
+     this is used to try to guess what could be included in stats automatically
+    """
+    providers = _guess_data_providers(module)
     if len(providers) == 0:
         return None
 
-    def auto_stats() -> Stats:
-        return {k: stat(v, quick=quick) for k, v in providers.items()}
+    def auto_stats(*, quick: bool = False) -> Stats:
+        res = {}
+        for k, v in providers.items():
+            res.update(stat(v, quick=quick, name=k))
+        return res
+
     return auto_stats
 
 
-def guess_data_providers(module_name: str) -> Dict[str, Callable]:
-    module = importlib.import_module(module_name)
+def test_guess_stats() -> None:
+    import my.core.tests.auto_stats as M
+
+    auto_stats = guess_stats(M)
+    assert auto_stats is not None
+    res = auto_stats(quick=False)
+
+    assert res == {
+        'inputs': {
+            'count': 3,
+            'first': 'file1.json',
+            'last': 'file3.json',
+        },
+        'iter_data': {
+            'count': 9,
+            'first': datetime(2020, 1, 1, 1, 1, 1),
+            'last': datetime(2020, 1, 3, 1, 1, 1),
+        },
+    }
+
+
+def _guess_data_providers(module: ModuleType) -> dict[str, Callable]:
     mfunctions = inspect.getmembers(module, inspect.isfunction)
     return {k: v for k, v in mfunctions if is_data_provider(v)}
 
 
-# todo how to exclude deprecated stuff?
+# todo how to exclude deprecated data providers?
 def is_data_provider(fun: Any) -> bool:
     """
+    Criteria for being a "data provider":
     1. returns iterable or something like that
     2. takes no arguments? (otherwise not callable by stats anyway?)
     3. doesn't start with an underscore (those are probably helper functions?)
-    4. functions isnt the 'inputs' function (or ends with '_inputs')
     """
     # todo maybe for 2 allow default arguments? not sure
     # one example which could benefit is my.pdfs
@@ -48,19 +226,23 @@ def is_data_provider(fun: Any) -> bool:
         return False
 
     # has at least one argument without default values
-    if len(list(sig_required_params(sig))) > 0:
+    if len(list(_sig_required_params(sig))) > 0:
         return False
 
     if hasattr(fun, '__name__'):
         # probably a helper function?
         if fun.__name__.startswith('_'):
             return False
-        # ignore def inputs; something like comment_inputs or backup_inputs should also be ignored
-        if fun.__name__ == 'inputs' or fun.__name__.endswith('_inputs'):
+
+    # inspect.signature might return str instead of a proper type object
+    # if from __future__ import annotations is used
+    # so best to rely on get_type_hints (which evals the annotations)
+    type_hints = typing.get_type_hints(fun)
+    return_type = type_hints.get('return')
+    if return_type is None:
         return False
 
-    return_type = sig.return_annotation
-    return type_is_iterable(return_type)
+    return _type_is_iterable(return_type)
 
 
 def test_is_data_provider() -> None:
@@ -71,34 +253,42 @@ def test_is_data_provider() -> None:
 
     def no_return_type():
         return [1, 2, 3]
+
     assert not idp(no_return_type)
 
     lam = lambda: [1, 2]
     assert not idp(lam)
 
-    def has_extra_args(count) -> List[int]:
+    def has_extra_args(count) -> list[int]:
         return list(range(count))
+
     assert not idp(has_extra_args)
 
     def has_return_type() -> Sequence[str]:
         return ['a', 'b', 'c']
+
     assert idp(has_return_type)
 
     def _helper_func() -> Iterator[Any]:
         yield 1
+
     assert not idp(_helper_func)
 
     def inputs() -> Iterator[Any]:
         yield 1
-    assert not idp(inputs)
+
+    assert idp(inputs)
 
     def producer_inputs() -> Iterator[Any]:
         yield 1
-    assert not idp(producer_inputs)
+
+    assert idp(producer_inputs)
 
 
-# return any parameters the user is required to provide - those which don't have default values
-def sig_required_params(sig: inspect.Signature) -> Iterator[inspect.Parameter]:
+def _sig_required_params(sig: inspect.Signature) -> Iterator[inspect.Parameter]:
+    """
+    Returns parameters the user is required to provide - e.g. ones that don't have default values
+    """
     for param in sig.parameters.values():
         if param.default == inspect.Parameter.empty:
             yield param
@@ -108,24 +298,24 @@ def test_sig_required_params() -> None:
 
     def x() -> int:
         return 5
-    assert len(list(sig_required_params(inspect.signature(x)))) == 0
+
+    assert len(list(_sig_required_params(inspect.signature(x)))) == 0
 
     def y(arg: int) -> int:
         return arg
-    assert len(list(sig_required_params(inspect.signature(y)))) == 1
+
+    assert len(list(_sig_required_params(inspect.signature(y)))) == 1
 
     # from stats perspective, this should be treated as a data provider as well
     # could be that the default value to the data provider is the 'default'
     # path to use for inputs/a function to provide input data
     def z(arg: int = 5) -> int:
         return arg
-    assert len(list(sig_required_params(inspect.signature(z)))) == 0
+
+    assert len(list(_sig_required_params(inspect.signature(z)))) == 0
 
 
-def type_is_iterable(type_spec) -> bool:
-    if sys.version_info[1] < 8:
-        # there is no get_origin before 3.8, and retrofitting gonna be a lot of pain
-        return any(x in str(type_spec) for x in ['List', 'Sequence', 'Iterable', 'Iterator'])
+def _type_is_iterable(type_spec) -> bool:
     origin = typing.get_origin(type_spec)
     if origin is None:
         return False
@@ -142,14 +332,139 @@ def type_is_iterable(type_spec) -> bool:
 
 # todo docstring test?
 def test_type_is_iterable() -> None:
-    from typing import List, Sequence, Iterable, Dict, Any
-
-    fun = type_is_iterable
+    fun = _type_is_iterable
     assert not fun(None)
     assert not fun(int)
     assert not fun(Any)
-    assert not fun(Dict[int, int])
+    assert not fun(dict[int, int])
 
-    assert fun(List[int])
-    assert fun(Sequence[Dict[str, str]])
+    assert fun(list[int])
+    assert fun(Sequence[dict[str, str]])
     assert fun(Iterable[Any])
+
+
+def _stat_item(item):
+    if item is None:
+        return None
+    if isinstance(item, Path):
+        return str(item)
+    return _guess_datetime(item)
+
+
+def _stat_iterable(it: Iterable[Any], *, quick: bool = False) -> Stats:
+    from more_itertools import first, ilen, take
+
+    # todo not sure if there is something in more_itertools to compute this?
+    total = 0
+    errors = 0
+    first_item = None
+    last_item = None
+
+    def funcit():
+        nonlocal errors, first_item, last_item, total
+        for x in it:
+            total += 1
+            if isinstance(x, Exception):
+                errors += 1
+            else:
+                last_item = x
+                if first_item is None:
+                    first_item = x
+            yield x
+
+    eit = funcit()
+    count: Any
+    if quick or QUICK_STATS:
+        initial = take(100, eit)
+        count = len(initial)
+        if first(eit, None) is not None:  # todo can actually be none...
+            # haven't exhausted
+            count = f'{count}+'
+    else:
+        count = ilen(eit)
+
+    res = {
+        'count': count,
+    }
+
+    if total == 0:
+        # not sure but I guess a good balance? wouldn't want to throw early here?
+        res['warning'] = 'THE ITERABLE RETURNED NO DATA'
+
+    if errors > 0:
+        res['errors'] = errors
+
+    if (stat_first := _stat_item(first_item)) is not None:
+        res['first'] = stat_first
+
+    if (stat_last := _stat_item(last_item)) is not None:
+        res['last'] = stat_last
+
+    return res
+
+
+def test_stat_iterable() -> None:
+    from datetime import datetime, timedelta, timezone
+    from typing import NamedTuple
+
+    dd = datetime.fromtimestamp(123, tz=timezone.utc)
+    day = timedelta(days=3)
+
+    class X(NamedTuple):
+        x: int
+        d: datetime
+
+    def it():
+        yield RuntimeError('oops!')
+        for i in range(2):
+            yield X(x=i, d=dd + day * i)
+        yield RuntimeError('bad!')
+        for i in range(3):
+            yield X(x=i * 10, d=dd + day * (i * 10))
+        yield X(x=123, d=dd + day * 50)
+
+    res = _stat_iterable(it())
+    assert res['count'] == 1 + 2 + 1 + 3 + 1
+    assert res['errors'] == 1 + 1
+    assert res['last'] == dd + day * 50
+
+
+# experimental, not sure about it..
+def _guess_datetime(x: Any) -> datetime | None:
+    # todo hmm implement without exception..
+    try:
+        d = asdict(x)
+    except:  # noqa: E722 bare except
+        return None
+    for v in d.values():
+        if isinstance(v, datetime):
+            return v
+    return None
+
+
+def test_guess_datetime() -> None:
+    from dataclasses import dataclass
+    from typing import NamedTuple
+
+    from .compat import fromisoformat
+
+    dd = fromisoformat('2021-02-01T12:34:56Z')
+
+    class A(NamedTuple):
+        x: int
+
+    class B(NamedTuple):
+        x: int
+        created: datetime
+
+    assert _guess_datetime(A(x=4)) is None
+    assert _guess_datetime(B(x=4, created=dd)) == dd
+
+    @dataclass
+    class C:
+        a: datetime
+        x: int
+
+    assert _guess_datetime(C(a=dd, x=435)) == dd
+    # TODO not sure what to return when multiple datetime fields?
+    # TODO test @property?

my/core/structure.py

@@ -1,20 +1,22 @@
+from __future__ import annotations
+
+import atexit
 import os
 import shutil
+import sys
+import tarfile
 import tempfile
 import zipfile
-import atexit
-
-from typing import Sequence, Generator, List, Union, Tuple
+from collections.abc import Generator, Sequence
 from contextlib import contextmanager
 from pathlib import Path
 
-from .common import LazyLogger
+from .logging import make_logger
+
+logger = make_logger(__name__, level="info")
 
 
-logger = LazyLogger(__name__, level="info")
-
-
-def _structure_exists(base_dir: Path, paths: Sequence[str], partial: bool = False) -> bool:
+def _structure_exists(base_dir: Path, paths: Sequence[str], *, partial: bool = False) -> bool:
     """
     Helper function for match_structure to check if
     all subpaths exist at some base directory
@@ -36,17 +38,18 @@ def _structure_exists(base_dir: Path, paths: Sequence[str], partial: bool = Fals
 
 
 ZIP_EXT = {".zip"}
+TARGZ_EXT = {".tar.gz"}
 
 
 @contextmanager
 def match_structure(
     base: Path,
-    expected: Union[str, Sequence[str]],
+    expected: str | Sequence[str],
     *,
     partial: bool = False,
-) -> Generator[Tuple[Path, ...], None, None]:
+) -> Generator[tuple[Path, ...], None, None]:
     """
-    Given a 'base' directory or zipfile, recursively search for one or more paths that match the
+    Given a 'base' directory or archive (zip/tar.gz), recursively search for one or more paths that match the
     pattern described in 'expected'. That can be a single string, or a list
     of relative paths (as strings) you expect at the same directory.
 
@@ -54,12 +57,12 @@ def match_structure(
     expected be present, not all of them.
 
     This reduces the chances of the user misconfiguring gdpr exports, e.g.
-    if they zipped the folders instead of the parent directory or vice-versa
+    if they archived the folders instead of the parent directory or vice-versa
 
     When this finds a matching directory structure, it stops searching in that subdirectory
     and continues onto other possible subdirectories which could match
 
-    If base is a zipfile, this extracts the zipfile into a temporary directory
+    If base is an archive, this extracts it into a temporary directory
     (configured by core_config.config.get_tmp_dir), and then searches the extracted
     folder for matching structures
 
@@ -69,21 +72,21 @@ def match_structure(
 
     export_dir
     ├── exp_2020
-    │   ├── channel_data
-    │   │   ├── data1
-    │   │   └── data2
-    │   ├── index.json
-    │   ├── messages
-    │   │   └── messages.csv
-    │   └── profile
-    │       └── settings.json
+    │   ├── channel_data
+    │   │   ├── data1
+    │   │   └── data2
+    │   ├── index.json
+    │   ├── messages
+    │   │   └── messages.csv
+    │   └── profile
+    │       └── settings.json
     └── exp_2021
         ├── channel_data
-        │   ├── data1
-        │   └── data2
+        │   ├── data1
+        │   └── data2
         ├── index.json
         ├── messages
-        │   └── messages.csv
+        │   └── messages.csv
         └── profile
             └── settings.json
 
@@ -95,12 +98,12 @@ def match_structure(
     This doesn't require an exhaustive list of expected values, but its a good idea to supply
     a complete picture of the expected structure to avoid false-positives
 
-    This does not recursively unzip zipfiles in the subdirectories,
-    it only unzips into a temporary directory if 'base' is a zipfile
+    This does not recursively decompress archives in the subdirectories,
+    it only unpacks into a temporary directory if 'base' is an archive
 
     A common pattern for using this might be to use get_files to get a list
-    of zipfiles or top-level gdpr export directories, and use match_structure
-    to search the resulting paths for a export structure you're expecting
+    of archives or top-level gdpr export directories, and use match_structure
+    to search the resulting paths for an export structure you're expecting
     """
     from . import core_config as CC
 
@@ -110,28 +113,37 @@ def match_structure(
         expected = (expected,)
 
     is_zip: bool = base.suffix in ZIP_EXT
+    is_targz: bool = any(base.name.endswith(suffix) for suffix in TARGZ_EXT)
 
     searchdir: Path = base.absolute()
     try:
-        # if the file given by the user is a zipfile, create a temporary
-        # directory and extract the zipfile to that temporary directory
+        # if the file given by the user is an archive, create a temporary
+        # directory and extract it to that temporary directory
         #
         # this temporary directory is removed in the finally block
-        if is_zip:
+        if is_zip or is_targz:
             # sanity check before we start creating directories/rm-tree'ing things
-            assert base.exists(), f"zipfile at {base} doesn't exist"
+            assert base.exists(), f"archive at {base} doesn't exist"
 
             searchdir = Path(tempfile.mkdtemp(dir=tdir))
 
-            zf = zipfile.ZipFile(base)
+            if is_zip:
+                # base might already be a ZipPath, and str(base) would end with /
+                zf = zipfile.ZipFile(str(base).rstrip('/'))
                 zf.extractall(path=str(searchdir))
-
+            elif is_targz:
+                with tarfile.open(str(base)) as tar:
+                    # filter is a security feature, will be required param in later python version
+                    mfilter = {'filter': 'data'} if sys.version_info[:2] >= (3, 12) else {}
+                    tar.extractall(path=str(searchdir), **mfilter)  # type: ignore[arg-type]
+            else:
+                raise RuntimeError("can't happen")
         else:
             if not searchdir.is_dir():
-                raise NotADirectoryError(f"Expected either a zipfile or a directory, received {searchdir}")
+                raise NotADirectoryError(f"Expected either a zip/tar.gz archive or a directory, received {searchdir}")
 
-        matches: List[Path] = []
-        possible_targets: List[Path] = [searchdir]
+        matches: list[Path] = []
+        possible_targets: list[Path] = [searchdir]
 
         while len(possible_targets) > 0:
             p = possible_targets.pop(0)
@@ -151,9 +163,9 @@ def match_structure(
 
     finally:
 
-        if is_zip:
+        if is_zip or is_targz:
             # make sure we're not mistakenly deleting data
-            assert str(searchdir).startswith(str(tdir)), f"Expected the temporary directory for extracting zip to start with the temporary directory prefix ({tdir}), found {searchdir}"
+            assert str(searchdir).startswith(str(tdir)), f"Expected the temporary directory for extracting archive to start with the temporary directory prefix ({tdir}), found {searchdir}"
 
             shutil.rmtree(str(searchdir))
 
@@ -162,7 +174,7 @@ def warn_leftover_files() -> None:
     from . import core_config as CC
 
     base_tmp: Path = CC.config.get_tmp_dir()
-    leftover: List[Path] = list(base_tmp.iterdir())
+    leftover: list[Path] = list(base_tmp.iterdir())
     if leftover:
         logger.debug(f"at exit warning: Found leftover files in temporary directory '{leftover}'. this may be because you have multiple hpi processes running -- if so this can be ignored")
 

my/core/tests/__init__.py

@@ -0,0 +1,3 @@
+# hmm, sadly pytest --import-mode importlib --pyargs my.core.tests doesn't work properly without __init__.py
+# although it works if you run either my.core or my.core.tests.sqlite (for example) directly
+# so if it gets in the way could get rid of this later?

my/core/tests/auto_stats.py

@@ -0,0 +1,37 @@
+"""
+Helper 'module' for test_guess_stats
+"""
+
+from collections.abc import Iterable, Iterator, Sequence
+from contextlib import contextmanager
+from dataclasses import dataclass
+from datetime import datetime, timedelta
+from pathlib import Path
+
+
+@dataclass
+class Item:
+    id: str
+    dt: datetime
+    source: Path
+
+
+def inputs() -> Sequence[Path]:
+    return [
+        Path('file1.json'),
+        Path('file2.json'),
+        Path('file3.json'),
+    ]
+
+
+def iter_data() -> Iterable[Item]:
+    dt = datetime.fromisoformat('2020-01-01 01:01:01')
+    for path in inputs():
+        for i in range(3):
+            yield Item(id=str(i), dt=dt + timedelta(days=i), source=path)
+
+
+@contextmanager
+def some_contextmanager() -> Iterator[str]:
+    # this shouldn't end up in guess_stats because context manager is not a data provider
+    yield 'hello'

my/core/tests/common.py

@@ -0,0 +1,32 @@
+from __future__ import annotations
+
+import os
+from collections.abc import Iterator
+from contextlib import contextmanager
+
+import pytest
+
+V = 'HPI_TESTS_USES_OPTIONAL_DEPS'
+
+# TODO use it for serialize tests that are using simplejson/orjson?
+skip_if_uses_optional_deps = pytest.mark.skipif(
+    V not in os.environ,
+    reason=f'test only works when optional dependencies are installed. Set env variable {V}=true to override.',
+)
+
+
+# TODO maybe move to hpi core?
+@contextmanager
+def tmp_environ_set(key: str, value: str | None) -> Iterator[None]:
+    prev_value = os.environ.get(key)
+    if value is None:
+        os.environ.pop(key, None)
+    else:
+        os.environ[key] = value
+    try:
+        yield
+    finally:
+        if prev_value is None:
+            os.environ.pop(key, None)
+        else:
+            os.environ[key] = prev_value