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gh-139482: speed up os.environ.clear by 2x #139483

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850a898
Make environ.clear() asymptotically efficient (O(N^2) -> O(N)).
gukoff Oct 1, 2025
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Add NEWS entry
gukoff Oct 1, 2025
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gukoff Oct 1, 2025
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Update Misc/NEWS.d/next/Library/2025-10-01-17-45-27.gh-issue-139482.y…
gukoff Oct 1, 2025
e116604
Add unit tests
gukoff Oct 2, 2025
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gukoff Oct 2, 2025
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Merge remote-tracking branch 'origin/main' into efficient-clearenv
gukoff Oct 2, 2025
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remote trailing whitespace
gukoff Oct 2, 2025
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remove newlines
gukoff Oct 11, 2025
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Merge remote-tracking branch 'origin/main' into efficient-clearenv
gukoff Oct 11, 2025
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Update Misc/NEWS.d/next/Library/2025-10-01-17-45-27.gh-issue-139482.y… 
…DMeEa.rst

Co-authored-by: Bénédikt Tran <[email protected]>
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@gukoff @picnixz
gukoff and picnixz authored Oct 1, 2025
commit 8c1ca2099b1bd7b7fb36dfbb0133cc2e36ac9e2c
4 changes: 2 additions & 2 deletions Misc/NEWS.d/next/Library/2025-10-01-17-45-27.gh-issue-139482.yDMeEa.rst
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@@ -1,2 +1,2 @@
Make os.environ.clear() more efficient (linear complexity instead of quadratic)

Ensure that :data:`os.environ.clear() <os.environ>`
has linear complexity instead of quadratic complexity.
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