diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py index 2f1f9e86a0bce4..244ce1e5da9bd2 100644 --- a/Lib/test/test_typing.py +++ b/Lib/test/test_typing.py @@ -4255,6 +4255,9 @@ class CustomProtocol(TestCase, Protocol): class CustomContextManager(typing.ContextManager, Protocol): pass + class CustomAsyncIterator(typing.AsyncIterator, Protocol): + pass + def test_non_runtime_protocol_isinstance_check(self): class P(Protocol): x: int diff --git a/Lib/typing.py b/Lib/typing.py index c924c767042552..8e6381033fd28e 100644 --- a/Lib/typing.py +++ b/Lib/typing.py @@ -1940,7 +1940,8 @@ def _allow_reckless_class_checks(depth=2): _PROTO_ALLOWLIST = { 'collections.abc': [ 'Callable', 'Awaitable', 'Iterable', 'Iterator', 'AsyncIterable', - 'Hashable', 'Sized', 'Container', 'Collection', 'Reversible', 'Buffer', + 'AsyncIterator', 'Hashable', 'Sized', 'Container', 'Collection', + 'Reversible', 'Buffer', ], 'contextlib': ['AbstractContextManager', 'AbstractAsyncContextManager'], } diff --git a/Misc/NEWS.d/next/Library/2024-11-11-13-24-22.gh-issue-126699.ONGbMd.rst b/Misc/NEWS.d/next/Library/2024-11-11-13-24-22.gh-issue-126699.ONGbMd.rst new file mode 100644 index 00000000000000..9741294487d716 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2024-11-11-13-24-22.gh-issue-126699.ONGbMd.rst @@ -0,0 +1 @@ +Allow :class:`collections.abc.AsyncIterator` to be a base for Protocols.