general: migrate modules to use 3.9 features

my/tests/bluemaestro.py

@@ -1,4 +1,4 @@
-from typing import Iterator
+from collections.abc import Iterator
 
 import pytest
 from more_itertools import one

my/tests/body/weight.py

@@ -1,8 +1,10 @@
 from pathlib import Path
-import pytz
-from my.core.cfg import tmp_config
+
 import pytest
+import pytz
+
 from my.body.weight import from_orgmode
+from my.core.cfg import tmp_config
 
 
 def test_body_weight() -> None:

my/tests/commits.py

@@ -1,14 +1,11 @@
 import os
 from pathlib import Path
 
-from more_itertools import bucket
 import pytest
-
-
-from my.core.cfg import tmp_config
+from more_itertools import bucket
 
 from my.coding.commits import commits
-
+from my.core.cfg import tmp_config
 
 pytestmark = pytest.mark.skipif(
     os.name == 'nt',

my/tests/location/fallback.py

@@ -2,8 +2,8 @@
 To test my.location.fallback_location.all
 """
 
+from collections.abc import Iterator
 from datetime import datetime, timedelta, timezone
-from typing import Iterator
 
 import pytest
 from more_itertools import ilen

my/tests/reddit.py

@@ -1,16 +1,14 @@
 import pytest
 from more_itertools import consume
 
-from my.core.cfg import tmp_config
-from my.core.utils.itertools import ensure_unique
-
-from .common import testdata
-
-
 # deliberately use mixed style imports on the top level and inside the methods to test tmp_config stuff
 # todo won't really be necessary once we migrate to lazy user config
 import my.reddit.all as my_reddit_all
 import my.reddit.rexport as my_reddit_rexport
+from my.core.cfg import tmp_config
+from my.core.utils.itertools import ensure_unique
+
+from .common import testdata
 
 
 def test_basic_1() -> None: