8000 gh-74690: Optimise `isinstance()` and `issubclass()` calls against runtime-checkable protocols by avoiding costly `super()` calls by AlexWaygood · Pull Request #112708 · python/cpython · GitHub
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gh-74690: Optimise isinstance() and issubclass() calls against runtime-checkable protocols by avoiding costly super() calls #112708

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Merged
merged 3 commits into from
Dec 4, 2023
Merged

gh-74690: Optimise isinstance() and issubclass() calls against runtime-checkable protocols by avoiding costly super() calls #112708

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gh-74690: Optimise `isinstance()` and `issubclass()` calls against ru…
AlexWaygood Dec 4, 2023
ff333fd
fix NEWS
AlexWaygood Dec 4, 2023
a7d76f6
actually fix NEWS
AlexWaygood Dec 4, 2023
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actually fix NEWS
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@AlexWaygood
AlexWaygood authored Dec 4, 2023
commit a7d76f6d6644acc2a7d0c1a16909be442b0c9930
2 changes: 1 addition & 1 deletion Misc/NEWS.d/next/Library/2023-12-04-14-05-24.gh-issue-74690.eODKRm.rst
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@@ -1,5 +1,5 @@
Speedup :func:`isinstance` checks by roughly 20% for
:func:`runtime-checkable protocols <typing.runtime_checkable>`
that only have one callable member.
Speedup `issubclass()` checks for these protocols by roughly 10%.
Speedup :func:`issubclass` checks for these protocols by roughly 10%.
Patch by Alex Waygood.
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