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Make _GeneratorContextManager covariant (#4733)

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Fixes  #4732
This commit is contained in:
Jelle Zijlstra
2020-10-30 17:31:55 -07:00
committed by GitHub
parent c58a93b928
commit 301325b55b
1 changed files with 4 additions and 3 deletions
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7
stdlib/2and3/contextlib.pyi
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@@ -11,6 +11,7 @@ if sys.version_info >= (3, 7):
AbstractAsyncContextManager = AsyncContextManager
_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])
@@ -18,12 +19,12 @@ _ExitFunc = Callable[[Optional[Type[BaseException]], Optional[BaseException], Op
_CM_EF = TypeVar("_CM_EF", ContextManager[Any], _ExitFunc)
if sys.version_info >= (3, 2):
class _GeneratorContextManager(ContextManager[_T], Generic[_T]):
class _GeneratorContextManager(ContextManager[_T_co]):
def __call__(self, func: _F) -> _F: ...
def contextmanager(func: Callable[..., Iterator[_T]]) -> Callable[..., _GeneratorContextManager[_T]]: ...
else:
class GeneratorContextManager(ContextManager[_T], Generic[_T]):
class GeneratorContextManager(ContextManager[_T_co]):
def __call__(self, func: _F) -> _F: ...
def contextmanager(func: Callable[..., Iterator[_T]]) -> Callable[..., ContextManager[_T]]: ...
@@ -33,7 +34,7 @@ if sys.version_info >= (3, 7):
if sys.version_info < (3,):
def nested(*mgr: ContextManager[Any]) -> ContextManager[Iterable[Any]]: ...
class closing(ContextManager[_T], Generic[_T]):
class closing(ContextManager[_T]):
def __init__(self, thing: _T) -> None: ...
if sys.version_info >= (3, 4):