Resolve possibly-used-before-assignment false positives from match block assignments #10393
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| π€ According to the primer, this change has no effect on the checked open source code. π€π This comment was generated for commit acdf505 |
jacobtylerwalls added backport maintenance/4.0.x False Positive π¦ 
| The backport to To backport manually, run these commands in your terminal: # Fetch latest updates from GitHub git fetch # Create a new working tree git worktree add .worktrees/backport-maintenance/3.3.x maintenance/3.3.x # Navigate to the new working tree cd .worktrees/backport-maintenance/3.3.x # Create a new branch git switch --create backport-10393-to-maintenance/3.3.x # Cherry-pick the merged commit of this pull request and resolve the conflicts git cherry-pick -x --mainline 1 ad14b5bf9f2eaaf9b69a0daef09d1d944e1b11cf # Push it to GitHub git push --set-upstream origin backport-10393-to-maintenance/3.3.x # Go back to the original working tree cd ../.. # Delete the working tree git worktree remove .worktrees/backport-maintenance/3.3.xThen, create a pull request where the |
jacobtylerwalls added a commit to jacobtylerwalls/pylint that referenced this pull request May 18, 2025
β¦` block assignments (pylint-dev#10393) (cherry picked from commit ad14b5b)
Pierre-Sassoulas added a commit that referenced this pull request Aug 9, 2025
β¦10487) * [ci] Install pylint before every test (#10388) (#10389) Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com> * Improve backport job permissions (#10390) (#10391) (cherry picked from commit 222ab20) * Resolve `possibly-used-before-assignment` false positives from `match` block assignments (#10393) (cherry picked from commit ad14b5b) * Use custom Github App to authenticate backport job (#10394) (#10396) (cherry picked from commit 6be8676) Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com> * Fix Pyreverse: Aggregations aren't filtered according to filter mode (PUB_ONLY, etc.) (#10379) (#10401) * updated diagrams.py file * added tests * updated tests * added test cases * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci --------- (cherry picked from commit ed59632) Co-authored-by: pavan-msys <149513767+pavan-msys@users.noreply.github.com> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> * Fix Mermaid printer rendering double underscores as bold formatting (#10403) (#10410) (cherry picked from commit 25a0f9e) Co-authored-by: Julian Grimm <51880314+Julfried@users.noreply.github.com> Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com> * Respect docstring-min-length in docparams extension (#10104) (#10434) (cherry picked from commit 7f5e996) Co-authored-by: Berker ΕAL <brkr.sal@gmail.com> * Fix `unused-variable` false positive when using same name for multiple exceptions (#10436) (#10481) (cherry picked from commit 9e72867) Co-authored-by: Zen Lee <53538590+zenlyj@users.noreply.github.com> * Fix false-negative for used-before-assignment with postponed evaluation in function defs (#10482) (#10483) (cherry picked from commit d363fca) Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com> * Update pytest-benchmark requirement from ~=4.0 to ~=5.1 (#10066) (#10484) (cherry picked from commit f04761b) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> * Bump pylint to 3.3.8, update changelog (#10486) --------- Co-authored-by: Marc Mueller <30130371+cdce8p@users.noreply.github.com> Co-authored-by: Jacob Walls <jacobtylerwalls@gmail.com> Co-authored-by: pylint-backport-bot[bot] <212256041+pylint-backport-bot[bot]@users.noreply.github.com> Co-authored-by: pavan-msys <149513767+pavan-msys@users.noreply.github.com> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Julian Grimm <51880314+Julfried@users.noreply.github.com> Co-authored-by: Berker ΕAL <brkr.sal@gmail.com> Co-authored-by: Zen Lee <53538590+zenlyj@users.noreply.github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Pierre-Sassoulas temporarily deployed to Backport 
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Type of Changes
Description
Currently,
possibly-used-before-assignmentis incorrectly raised when a variable is exhaustively assigned under amatchblock.This occurs because the check for name definition within conditional blocks does not handle
matchstatements, leading to false positives.Closes #9668