[pylint] Avoid flattening nested min/max when outer call has single argument (PLW3301)
#16885
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ntBre
reviewed
Mar 24, 2025
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Addressed the CI failures by updating the PLW3301 snapshots to match the extended fixture. The |
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@ntBre do you want to update the snapshots here yourself so that we can push this over the line? |
…rgument (PLW3301) Signed-off-by: Gene Parmesan Thomas <201852096+gopoto@users.noreply.github.com>
pylint] Avoid flattening nested min/max when outer call has single argument (PLW3301)
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dcreager
added a commit
that referenced
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Jun 20, 2025
* main: (21 commits) [`flake8-logging`] Avoid false positive for `exc_info=True` outside `logger.exception` (`LOG014`) (#18737) [`flake8-pie`] Small docs fix to `PIE794` (#18829) [`pylint`] Ignore __init__.py files in (PLC0414) (#18400) Avoid generating diagnostics with per-file ignores (#18801) [`flake8-simplify`] Fix false negatives for shadowed bindings (`SIM910`, `SIM911`) (#18794) [ty] Fix panics when pulling types for `ClassVar` or `Final` parameterized with >1 argument (#18824) [`pylint`] add fix safety section (`PLR1714`) (#18415) [Perflint] Small docs improvement to `PERF401` (#18786) [`pylint`] Avoid flattening nested `min`/`max` when outer call has single argument (`PLW3301`) (#16885) [`ruff`] Added `cls.__dict__.get('__annotations__')` check (`RUF063`) (#18233) [ty] Use `HashTable` in `PlaceTable` (#18819) docs: Correct collections-named-tuple example to use PascalCase assignment (#16884) [ty] ecosystem-analyzer workflow (#18719) [ty] Add support for `@staticmethod`s (#18809) unnecessary_dict_kwargs doc - a note on type checking benefits (#18666) [`flake8-pytest-style`] Mark autofix for `PT001` and `PT023` as unsafe if there's comments in the decorator (#18792) [ty] Surface matched overload diagnostic directly (#18452) [ty] Report when a dataclass contains more than one `KW_ONLY` field (#18731) [`flake8-pie`] Add fix safety section to `PIE794` (#18802) [`pycodestyle`] Add fix safety section to `W291` and `W293` (#18800) ...
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Summary
Fixes false positives (and incorrect autofixes) in
nested-min-max(PLW3301) when the outermin/maxcall only has a single argument. Previously the rule would flatten:into
min([2, 3], [4, 1]), changing the semantics. The rule now skips any nested call when the outer call has only one positional argument. The pylint fixture and snapshot were updated accordingly.Test Plan
Ran Ruff against the updated
nested_min_max.pyfixture:to verify that
min(min([2, 3], [4, 1]))andmax(max([2, 4], [3, 1]))are no longer flagged. Updated the fixture and snapshot; all other existing warnings remain unchanged. The code compiles and the unit tests pass.This PR was generated by an AI system in collaboration with maintainers: @carljm, @ntBre
Fixes #16163