Fix several methods that should be async def, but aren't (#7107)

stdlib/_typeshed/__init__.pyi

@@ -7,7 +7,7 @@ import ctypes
 import mmap
 import sys
 from os import PathLike
-from typing import AbstractSet, Any, Awaitable, Container, Generic, Iterable, Protocol, TypeVar, Union
+from typing import AbstractSet, Any, Container, Generic, Iterable, Protocol, TypeVar, Union
 from typing_extensions import Final, Literal, final
 
 _KT = TypeVar("_KT")
@@ -33,7 +33,7 @@ class SupportsNext(Protocol[_T_co]):
 
 # stable
 class SupportsAnext(Protocol[_T_co]):
-    def __anext__(self) -> Awaitable[_T_co]: ...
+    async def __anext__(self) -> _T_co: ...
 
 # Comparison protocols
 

stdlib/asyncio/locks.pyi

@@ -1,7 +1,7 @@
 import sys
 from collections import deque
 from types import TracebackType
-from typing import Any, Awaitable, Callable, Generator, TypeVar
+from typing import Any, Callable, Generator, TypeVar
 
 from .events import AbstractEventLoop
 from .futures import Future
@@ -11,10 +11,10 @@ _T = TypeVar("_T")
 if sys.version_info >= (3, 9):
     class _ContextManagerMixin:
         def __init__(self, lock: Lock | Semaphore) -> None: ...
-        def __aenter__(self) -> Awaitable[None]: ...
-        def __aexit__(
+        async def __aenter__(self) -> None: ...
+        async def __aexit__(
             self, exc_type: type[BaseException] | None, exc: BaseException | None, tb: TracebackType | None
-        ) -> Awaitable[None]: ...
+        ) -> None: ...
 
 else:
     class _ContextManager:
@@ -29,10 +29,10 @@ else:
         def __exit__(self, *args: Any) -> None: ...
         def __iter__(self) -> Generator[Any, None, _ContextManager]: ...
         def __await__(self) -> Generator[Any, None, _ContextManager]: ...
-        def __aenter__(self) -> Awaitable[None]: ...
-        def __aexit__(
+        async def __aenter__(self) -> None: ...
+        async def __aexit__(
             self, exc_type: type[BaseException] | None, exc: BaseException | None, tb: TracebackType | None
-        ) -> Awaitable[None]: ...
+        ) -> None: ...
 
 class Lock(_ContextManagerMixin):
     def __init__(self, *, loop: AbstractEventLoop | None = ...) -> None: ...

stdlib/contextlib.pyi

@@ -85,7 +85,7 @@ class closing(AbstractContextManager[_SupportsCloseT]):
 
 if sys.version_info >= (3, 10):
     class _SupportsAclose(Protocol):
-        def aclose(self) -> Awaitable[object]: ...
+        async def aclose(self) -> object: ...
     _SupportsAcloseT = TypeVar("_SupportsAcloseT", bound=_SupportsAclose)
 
     class aclosing(AbstractAsyncContextManager[_SupportsAcloseT]):
@@ -122,19 +122,19 @@ if sys.version_info >= (3, 7):
     class AsyncExitStack(AbstractAsyncContextManager[AsyncExitStack]):
         def __init__(self) -> None: ...
         def enter_context(self, cm: AbstractContextManager[_T]) -> _T: ...
-        def enter_async_context(self, cm: AbstractAsyncContextManager[_T]) -> Awaitable[_T]: ...
+        async def enter_async_context(self, cm: AbstractAsyncContextManager[_T]) -> _T: ...
         def push(self, exit: _CM_EF) -> _CM_EF: ...
         def push_async_exit(self, exit: _ACM_EF) -> _ACM_EF: ...
         def callback(self, __callback: Callable[_P, _T], *args: _P.args, **kwds: _P.kwargs) -> Callable[_P, _T]: ...
         def push_async_callback(
             self, __callback: Callable[_P, Awaitable[_T]], *args: _P.args, **kwds: _P.kwargs
         ) -> Callable[_P, Awaitable[_T]]: ...
         def pop_all(self: Self) -> Self: ...
-        def aclose(self) -> Awaitable[None]: ...
-        def __aenter__(self: Self) -> Awaitable[Self]: ...
-        def __aexit__(
+        async def aclose(self) -> None: ...
+        async def __aenter__(self: Self) -> Self: ...
+        async def __aexit__(
             self, __exc_type: type[BaseException] | None, __exc_value: BaseException | None, __traceback: TracebackType | None
-        ) -> Awaitable[bool]: ...
+        ) -> bool: ...
 
 if sys.version_info >= (3, 10):
     class nullcontext(AbstractContextManager[_T], AbstractAsyncContextManager[_T]):

stdlib/typing.pyi

@@ -448,10 +448,10 @@ class ContextManager(Protocol[_T_co]):
 
 @runtime_checkable
 class AsyncContextManager(Protocol[_T_co]):
-    def __aenter__(self) -> Awaitable[_T_co]: ...
-    def __aexit__(
+    async def __aenter__(self) -> _T_co: ...
+    async def __aexit__(
         self, __exc_type: Type[BaseException] | None, __exc_value: BaseException | None, __traceback: TracebackType | None
-    ) -> Awaitable[bool | None]: ...
+    ) -> bool | None: ...
 
 class Mapping(Collection[_KT], Generic[_KT, _VT_co]):
     # TODO: We wish the key type could also be covariant, but that doesn't work,