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Title: [3.13] gh-130094: Fix race conditions in `importlib` (gh-130101) by zsaladin · Pull Request #155915 · python/cpython · GitHub

Open Graph Title: [3.13] gh-130094: Fix race conditions in `importlib` (gh-130101) by zsaladin · Pull Request #155915 · python/cpython

X Title: [3.13] gh-130094: Fix race conditions in `importlib` (gh-130101) by zsaladin · Pull Request #155915 · python/cpython

Description: Entries may be added or removed from sys.meta_path concurrently. For example, setuptools temporarily adds and removes the distutils finder from the beginning of the list. The local copy ensures that we don't skip over any entries. Some packages modify sys.modules during import. For example, collections inserts the entry for collections.abc into sys.modules during import. We need to ensure that we re-check sys.modules after the parent module is fully initialized. (cherry picked from commit 857bdba) Issue: gh-130094

Open Graph Description: Entries may be added or removed from sys.meta_path concurrently. For example, setuptools temporarily adds and removes the distutils finder from the beginning of the list. The local copy ensures tha...

X Description: Entries may be added or removed from sys.meta_path concurrently. For example, setuptools temporarily adds and removes the distutils finder from the beginning of the list. The local copy ensures tha...

Opengraph URL: https://github.com/python/cpython/pull/155915

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f45ca68 [3.13] gh-130094: Fix race conditions in `importlib` (gh-130101) colesbury Feb 18, 2025 https://github.com/python/cpython/pull/155915/commits/f45ca688e0fd90ba891ff794c154fff8a42e51bc
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