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[contextlib] Make ExitStack/AsyncExitStack not appear as abstract (#15488)

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KotlinIsland
2026-04-01 19:38:42 +10:00
committed by GitHub
parent 679fce774b
commit e01edb5465
1 changed files with 12 additions and 6 deletions
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stdlib/contextlib.pyi
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@@ -178,9 +178,15 @@ class _BaseExitStack(Generic[_ExitT_co]):
def callback(self, callback: Callable[_P, _T], /, *args: _P.args, **kwds: _P.kwargs) -> Callable[_P, _T]: ...
def pop_all(self) -> Self: ...
# In reality this is a subclass of `AbstractContextManager`;
# see #7961 for why we don't do that in the stub
class ExitStack(_BaseExitStack[_ExitT_co], metaclass=abc.ABCMeta):
# this class is to avoid putting `metaclass=abc.ABCMeta` on the implementations directly, as this would make them
# appear explicitly abstract to some tools. this is due to the implementations not subclassing `AbstractContextManager`
# see note on the subclasses
@type_check_only
class _BaseExitStackAbstract(_BaseExitStack[_ExitT_co], metaclass=abc.ABCMeta): ...
# In reality this is a subclass of `AbstractContextManager`, but we can't provide `Self` as the argument for `__enter__`
# https://discuss.python.org/t/self-as-typevar-default/90939
class ExitStack(_BaseExitStackAbstract[_ExitT_co]):
def close(self) -> None: ...
def __enter__(self) -> Self: ...
def __exit__(
@@ -192,9 +198,9 @@ _ExitCoroFunc: TypeAlias = Callable[
]
_ACM_EF = TypeVar("_ACM_EF", bound=AbstractAsyncContextManager[Any, Any] | _ExitCoroFunc)
# In reality this is a subclass of `AbstractAsyncContextManager`;
# see #7961 for why we don't do that in the stub
class AsyncExitStack(_BaseExitStack[_ExitT_co], metaclass=abc.ABCMeta):
# In reality this is a subclass of `AbstractContextManager`, but we can't provide `Self` as the argument for `__enter__`
# https://discuss.python.org/t/self-as-typevar-default/90939
class AsyncExitStack(_BaseExitStackAbstract[_ExitT_co]):
async def enter_async_context(self, cm: AbstractAsyncContextManager[_T, _ExitT_co]) -> _T: ...
def push_async_exit(self, exit: _ACM_EF) -> _ACM_EF: ...
def push_async_callback(