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[3.13] gh-126699: allow AsyncIterator to be used as a base for Protocols (GH-126702) (#126762)

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gh-126699: allow AsyncIterator to be used as a base for Protocols (GH-126702)
(cherry picked from commit feb3e0b19c)

Co-authored-by: Stephen Morton <github@tungol.org>
This commit is contained in:
Miss Islington (bot) 2024-12-02 15:10:25 +01:00 • committed by GitHub
parent d9bbb52c7e
commit a5672bec68
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3 changed files with 6 additions and 1 deletions
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3
Lib/test/test_typing.py
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@ -4254,6 +4254,9 @@ class ProtocolTests(BaseTestCase):
class CustomContextManager(typing.ContextManager, Protocol): class CustomContextManager(typing.ContextManager, Protocol):
pass pass
class CustomAsyncIterator(typing.AsyncIterator, Protocol):
pass
def test_non_runtime_protocol_isinstance_check(self): def test_non_runtime_protocol_isinstance_check(self):
class P(Protocol): class P(Protocol):
x: int x: int

3
Lib/typing.py
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@ -1989,7 +1989,8 @@ def _allow_reckless_class_checks(depth=2):
_PROTO_ALLOWLIST = { _PROTO_ALLOWLIST = {
'collections.abc': [ 'collections.abc': [
'Callable', 'Awaitable', 'Iterable', 'Iterator', 'AsyncIterable', 'Callable', 'Awaitable', 'Iterable', 'Iterator', 'AsyncIterable',
'Hashable', 'Sized', 'Container', 'Collection', 'Reversible', 'Buffer', 'AsyncIterator', 'Hashable', 'Sized', 'Container', 'Collection',
'Reversible', 'Buffer',
], ],
'contextlib': ['AbstractContextManager', 'AbstractAsyncContextManager'], 'contextlib': ['AbstractContextManager', 'AbstractAsyncContextManager'],
} }

1
Misc/NEWS.d/next/Library/2024-11-11-13-24-22.gh-issue-126699.ONGbMd.rst Normal file
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@ -0,0 +1 @@
Allow :class:`collections.abc.AsyncIterator` to be a base for Protocols.