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Title: gh-74690: typing: Don't unnecessarily call `_get_protocol_attrs` twice in `_ProtocolMeta.__instancecheck__` by AlexWaygood · Pull Request #103141 · python/cpython · GitHub

Open Graph Title: gh-74690: typing: Don't unnecessarily call `_get_protocol_attrs` twice in `_ProtocolMeta.__instancecheck__` by AlexWaygood · Pull Request #103141 · python/cpython

X Title: gh-74690: typing: Don't unnecessarily call `_get_protocol_attrs` twice in `_ProtocolMeta.__instancecheck__` by AlexWaygood · Pull Request #103141 · python/cpython

Description: This simple optimisation achieves speedups for all kinds of isinstance() checks against runtime-checkable protocols. For structural subtypes that set attributes in __init__ methods, the speedup is ...

Open Graph Description: This simple optimisation achieves speedups for all kinds of isinstance() checks against runtime-checkable protocols. For structural subtypes that set attributes in __init__ methods, the speedup is ...

X Description: This simple optimisation achieves speedups for all kinds of isinstance() checks against runtime-checkable protocols. For structural subtypes that set attributes in __init__ methods, the speedup is ...

Opengraph URL: https://github.com/python/cpython/pull/103141

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https://github.com/python/cpython/pull/103141/files/285a41b656659a4e857af1a78960a1d4fc89a076
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topic-typing https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Atopic-typing
type-feature https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Atype-feature
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