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Title: gh-74690: Optimise `isinstance()` and `issubclass()` calls against runtime-checkable protocols by avoiding costly `super()` calls by AlexWaygood · Pull Request #112708 · python/cpython · GitHub

Open Graph Title: gh-74690: Optimise `isinstance()` and `issubclass()` calls against runtime-checkable protocols by avoiding costly `super()` calls by AlexWaygood · Pull Request #112708 · python/cpython

X Title: gh-74690: Optimise `isinstance()` and `issubclass()` calls against runtime-checkable protocols by avoiding costly `super()` calls by AlexWaygood · Pull Request #112708 · python/cpython

Description: Before: >python -m timeit -s "from typing import SupportsIndex" "isinstance(0, SupportsIndex)" Running PGUpdate|x64 interpreter... 1000000 loops, best of 5: 379 nsec per loop >python -m timeit -s ...

Open Graph Description: Before: >python -m timeit -s "from typing import SupportsIndex" "isinstance(0, SupportsIndex)" Running PGUpdate|x64 interpreter... 1000000 loops, best of 5: 379 nsec per loop...

X Description: Before: >python -m timeit -s "from typing import SupportsIndex" "isinstance(0, SupportsIndex)" Running PGUpdate|x64 interpreter... 1000000 loops, best of ...

Opengraph URL: https://github.com/python/cpython/pull/112708

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