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Eliminated the use of "bare" TypeVars in stdlib stubs (#5041)

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Eliminated the use of "bare" TypeVars (i.e. a TypeVar that appears only once) within generic methods. While not considered an error in PEP 484, these are a common source of bugs in code, and some type checkers (including pytype and pyright) flag them as errors.

Co-authored-by: Eric Traut <erictr@microsoft.com>
This commit is contained in:
Eric Traut
2021-02-27 20:43:45 -07:00
committed by GitHub
parent 3c0f2acdf0
commit e2967a8bee
16 changed files with 34 additions and 37 deletions
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9
stubs/cachetools/cachetools/decorators.pyi
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@@ -1,16 +1,13 @@
from typing import Any, Callable, ContextManager, MutableMapping, Optional, TypeVar
_KT = TypeVar("_KT")
_VT = TypeVar("_VT")
_T = TypeVar("_T", bound=Callable[..., Any])
_T_co = TypeVar("_T_co", covariant=True)
_T_self = TypeVar("_T_self")
def cached(
cache: Optional[MutableMapping[_KT, _VT]], key: Callable[..., _KT] = ..., lock: Optional[ContextManager[_T_co]] = ...
cache: Optional[MutableMapping[_KT, Any]], key: Callable[..., _KT] = ..., lock: Optional[ContextManager[Any]] = ...
) -> Callable[[_T], _T]: ...
def cachedmethod(
cache: Callable[[_T_self], Optional[MutableMapping[_KT, _VT]]],
cache: Callable[[Any], Optional[MutableMapping[_KT, Any]]],
key: Callable[..., _KT] = ...,
lock: Optional[ContextManager[_T_co]] = ...,
lock: Optional[ContextManager[Any]] = ...,
) -> Callable[[_T], _T]: ...