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use ParamSpec for @contextmanager (#5476)

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This commit is contained in:
Jelle Zijlstra
2021-06-14 07:38:39 -07:00
committed by GitHub
parent b65fa0ed52
commit 4581501c98
1 changed files with 5 additions and 3 deletions
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8
stdlib/contextlib.pyi
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@@ -14,7 +14,7 @@ from typing import (
TypeVar,
overload,
)
from typing_extensions import Protocol
from typing_extensions import ParamSpec, Protocol
AbstractContextManager = ContextManager
if sys.version_info >= (3, 7):
@@ -24,6 +24,7 @@ _T = TypeVar("_T")
_T_co = TypeVar("_T_co", covariant=True)
_T_io = TypeVar("_T_io", bound=Optional[IO[str]])
_F = TypeVar("_F", bound=Callable[..., Any])
_P = ParamSpec("_P")
_ExitFunc = Callable[[Optional[Type[BaseException]], Optional[BaseException], Optional[TracebackType]], bool]
_CM_EF = TypeVar("_CM_EF", ContextManager[Any], _ExitFunc)
@@ -31,10 +32,11 @@ _CM_EF = TypeVar("_CM_EF", ContextManager[Any], _ExitFunc)
class _GeneratorContextManager(ContextManager[_T_co]):
def __call__(self, func: _F) -> _F: ...
def contextmanager(func: Callable[..., Iterator[_T]]) -> Callable[..., _GeneratorContextManager[_T]]: ...
# type ignore to deal with incomplete ParamSpec support in mypy
def contextmanager(func: Callable[_P, Iterator[_T]]) -> Callable[_P, _GeneratorContextManager[_T]]: ... # type: ignore
if sys.version_info >= (3, 7):
def asynccontextmanager(func: Callable[..., AsyncIterator[_T]]) -> Callable[..., AsyncContextManager[_T]]: ...
def asynccontextmanager(func: Callable[_P, AsyncIterator[_T]]) -> Callable[_P, AsyncContextManager[_T]]: ... # type: ignore
class _SupportsClose(Protocol):
def close(self) -> None: ...