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v3.3.9

What's new in Pylint 3.3.9?

Release date: 2025-10-05

False Positives Fixed

• Fix used-before-assignment for PEP 695 type aliases and parameters.

  Closes #9815

• No longer flag undeprecated functions in importlib.resources as deprecated.

  Closes #10593

• Fix false positive inconsistent-return-statements when using quit() or exit() functions.

  Closes #10508

• Fix false positive undefined-variable (E0602) for for-loop variable shadowing patterns like for item in item: when the variable was previously defined.

  Closes #10562

Other Bug Fixes

• Fixed crash in 'unnecessary-list-index-lookup' when starting an enumeration using minus the length of an iterable inside a dict comprehension when the len call was only made in this dict comprehension, and not elsewhere. Also changed the approach, to use inference in all cases but the simple ones, so we don't have to fix crashes one by one for arbitrarily complex expressions in enumerate.

  Closes #10510

• 4cab7ca Bump pylint to 3.3.9, update changelog
• 81fb483 [Backport maintenance/3.3.x] Extend catching of ValueError to 3.12.5+ (#10611)
• 1ef673b [Backport maintenance/3.3.x] Fix flagging undeprecated importlib.resources fu...
• 194790c Fix invalid refs in 3.3 whatsnew (#10578) (#10579)
• 9823870 fix: handle inconsistent-return-statements false positive with quit()/`ex...
• 16fe127 fix: handle for-loop variable shadowing correctly (#10569) (#10571)
• 6cf727c Add sphinx reference for whatsnew 3.3 (#10564) (#10565)
• 641a316 Use custom backport action (#10536) (#10537)
• 65efb67 [fix] Better approach in 'unnecessary-list-index-lookup' to avoid crashes (#1...
• 78444bb Fix used-before-assignment for PEP 695 type aliases + parameters (#10488) (#1...
• See full diff in compare view

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