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Title: Better fork support in cached FastPath instances · Issue #146228 · python/cpython · GitHub

Open Graph Title: Better fork support in cached FastPath instances · Issue #146228 · python/cpython

X Title: Better fork support in cached FastPath instances · Issue #146228 · python/cpython

Description: In python/importlib_metadata#520, we learned that the FastPath caches can cause problems with open zip files at the fork boundary. The fix was released in importlib_metadata 8.7.1. Let's sync that to CPython. Linked PRs gh-146231

Open Graph Description: In python/importlib_metadata#520, we learned that the FastPath caches can cause problems with open zip files at the fork boundary. The fix was released in importlib_metadata 8.7.1. Let's sync that ...

X Description: In python/importlib_metadata#520, we learned that the FastPath caches can cause problems with open zip files at the fork boundary. The fix was released in importlib_metadata 8.7.1. Let's sync t...

Opengraph URL: https://github.com/python/cpython/issues/146228

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on Mar 20, 2026https://github.com/python/cpython/issues/146228#issue-4109021955
python/importlib_metadata#520https://github.com/python/importlib_metadata/issues/520
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gh-146228: Better fork support in cached FastPath #146231https://github.com/python/cpython/pull/146231
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