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| author | Alex Waygood <Alex.Waygood@Gmail.com> | 2023-05-18 23:34:40 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-05-18 23:34:40 (GMT) |
| commit | f7835fc7e9617cefd87e72002916e258f589c857 (patch) | |
| tree | 4cbc2335ea681412ebe6ea8710920cdaef8465c3 /Lib/typing.py | |
| parent | aab2a366b7d6a5c123bc8d23d66db4d2277dfa09 (diff) | |
| download | cpython-f7835fc7e9617cefd87e72002916e258f589c857.zip cpython-f7835fc7e9617cefd87e72002916e258f589c857.tar.gz cpython-f7835fc7e9617cefd87e72002916e258f589c857.tar.bz2 | |
gh-74690: Don't set special protocol attributes on non-protocol subclasses of protocols (#104622)
Don't set special protocol attributes on non-protocol subclasses of protocols
Diffstat (limited to 'Lib/typing.py')
| -rw-r--r-- | Lib/typing.py | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/Lib/typing.py b/Lib/typing.py index 91b5fe5..b60eb94 100644 --- a/Lib/typing.py +++ b/Lib/typing.py @@ -1779,12 +1779,13 @@ class _ProtocolMeta(ABCMeta): # but is necessary for several reasons... def __init__(cls, *args, **kwargs): super().__init__(*args, **kwargs) - cls.__protocol_attrs__ = _get_protocol_attrs(cls) - # PEP 544 prohibits using issubclass() - # with protocols that have non-method members. - cls.__callable_proto_members_only__ = all( - callable(getattr(cls, attr, None)) for attr in cls.__protocol_attrs__ - ) + if getattr(cls, "_is_protocol", False): + cls.__protocol_attrs__ = _get_protocol_attrs(cls) + # PEP 544 prohibits using issubclass() + # with protocols that have non-method members. + cls.__callable_proto_members_only__ = all( + callable(getattr(cls, attr, None)) for attr in cls.__protocol_attrs__ + ) def __subclasscheck__(cls, other): if ( |