016f28250b
fix fairly uncontroversial stuff in my.core like - line spacing, which isn't too annoying (e.g. unlike many inline whitespace checks that break vertical formatting) - unused imports/variables - too broad except
127 lines
3.2 KiB
Python
127 lines
3.2 KiB
Python
'''
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Some backwards compatibility stuff/deprecation helpers
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'''
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import sys
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from types import ModuleType
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from . import warnings
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from .common import LazyLogger
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logger = LazyLogger('my.core.compat')
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def pre_pip_dal_handler(
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name: str,
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e: ModuleNotFoundError,
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cfg,
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requires=[],
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) -> ModuleType:
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'''
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https://github.com/karlicoss/HPI/issues/79
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'''
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if e.name != name:
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# the module itself was imported, so the problem is with some dependencies
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raise e
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try:
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dal = _get_dal(cfg, name)
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warnings.high(f'''
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Specifying modules' dependencies in the config or in my/config/repos is deprecated!
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Please install {' '.join(requires)} as PIP packages (see the corresponding README instructions).
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'''.strip(), stacklevel=2)
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except ModuleNotFoundError:
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dal = None
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if dal is None:
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# probably means there was nothing in the old config in the first place
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# so we should raise the original exception
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raise e
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return dal
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def _get_dal(cfg, module_name: str):
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mpath = getattr(cfg, module_name, None)
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if mpath is not None:
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from .common import import_dir
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return import_dir(mpath, '.dal')
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else:
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from importlib import import_module
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return import_module(f'my.config.repos.{module_name}.dal')
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import os
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windows = os.name == 'nt'
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import sqlite3
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def sqlite_backup(*, source: sqlite3.Connection, dest: sqlite3.Connection, **kwargs) -> None:
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if sys.version_info[:2] >= (3, 7):
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source.backup(dest, **kwargs)
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else:
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# https://stackoverflow.com/a/10856450/706389
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import io
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tempfile = io.StringIO()
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for line in source.iterdump():
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tempfile.write('%s\n' % line)
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tempfile.seek(0)
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dest.cursor().executescript(tempfile.read())
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dest.commit()
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# can remove after python3.9
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def removeprefix(text: str, prefix: str) -> str:
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if text.startswith(prefix):
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return text[len(prefix):]
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return text
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# can remove after python3.8
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if sys.version_info[:2] >= (3, 8):
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from functools import cached_property
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else:
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from typing import TypeVar, Callable
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Cl = TypeVar('Cl')
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R = TypeVar('R')
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def cached_property(f: Callable[[Cl], R]) -> R:
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import functools
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return property(functools.lru_cache(maxsize=1)(f)) # type: ignore
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del Cl
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del R
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from typing import TYPE_CHECKING
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if sys.version_info[:2] >= (3, 8):
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from typing import Literal
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else:
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if TYPE_CHECKING:
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from typing_extensions import Literal
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else:
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# erm.. I guess as long as it's not crashing, whatever...
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class _Literal:
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def __getitem__(self, args):
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pass
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Literal = _Literal()
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if sys.version_info[:2] >= (3, 8):
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from typing import Protocol
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else:
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if TYPE_CHECKING:
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from typing_extensions import Protocol # type: ignore[misc]
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else:
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# todo could also use NamedTuple?
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Protocol = object
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if sys.version_info[:2] >= (3, 8):
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from typing import TypedDict
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else:
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if TYPE_CHECKING:
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from typing_extensions import TypedDict # type: ignore[misc]
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else:
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from typing import Dict
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TypedDict = Dict
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