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Fix quadratic-time behavior when handling unittest subtests in Python 3.10#13993

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nicoddemus merged 1 commit intopytest-dev:mainfrom
nicoddemus:quadratic-subtests-13965
Nov 22, 2025
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Fix quadratic-time behavior when handling unittest subtests in Python 3.10#13993
nicoddemus merged 1 commit intopytest-dev:mainfrom
nicoddemus:quadratic-subtests-13965

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Fix #13965
Close #13970

@psf-chronographer psf-chronographer bot added the bot:chronographer:provided (automation) changelog entry is part of PR label Nov 21, 2025
@nicoddemus nicoddemus added the backport 9.0.x apply to PRs at any point; backports the changes to the 9.0.x branch label Nov 21, 2025
@nicoddemus nicoddemus merged commit 342dba6 into pytest-dev:main Nov 22, 2025
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@nicoddemus nicoddemus deleted the quadratic-subtests-13965 branch November 22, 2025 11:59
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patchback bot commented Nov 22, 2025

Backport to 9.0.x: 💚 backport PR created

✅ Backport PR branch: patchback/backports/9.0.x/342dba6c9fa2262fb6baa7eee3eaa62d12cfdd88/pr-13993

Backported as #13998

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patchback bot pushed a commit that referenced this pull request Nov 22, 2025
nicoddemus added a commit that referenced this pull request Nov 22, 2025
…on 3.10 (#13993) (#13998)

Fix #13965
Close #13970

(cherry picked from commit 342dba6)

Co-authored-by: Bruno Oliveira <[email protected]>
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Quadratic blowup when using TestCase subtests in python 3.10

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