[flake8-bugbear] Skip B905 and B912 if <2 iterables and no starred arguments
#20998
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dylwil3
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flake8-bugbear] Skip B905 and B905 if <2 iterators and no starred argumentsflake8-bugbear] Skip B905 and B905 if <2 iteratables and no starred arguments
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AlexWaygood
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flake8-bugbear] Skip B905 and B905 if <2 iteratables and no starred argumentsflake8-bugbear] Skip B905 and B905 if <2 iterables and no starred arguments
dylwil3
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flake8-bugbear] Skip B905 and B905 if <2 iterables and no starred argumentsflake8-bugbear] Skip B905 and B912 if <2 iterables and no starred arguments
dcreager
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Oct 22, 2025
* main: (65 commits) [ty] Some more simplifications when rendering constraint sets (#21009) [ty] Make `attributes.md` mdtests faster (#21030) [ty] Set `INSTA_FORCE_PASS` and `INSTA_OUTPUT` environment variables from mdtest.py (#21029) [ty] Fall back to `Divergent` for deeply nested specializations (#20988) [`ruff`] Autogenerate TypeParam nodes (#21028) [ty] Add assertions to ensure that we never call `KnownClass::Tuple.to_instance()` or similar (#21027) [`ruff`] Auto generate ast Pattern nodes (#21024) [`flake8-simplify`] Skip `SIM911` when unknown arguments are present (#20697) Render a diagnostic for syntax errors introduced in formatter tests (#21021) [ty] Support goto-definition on vendored typeshed stubs (#21020) [ty] Implement go-to for binary and unary operators (#21001) [ty] Avoid ever-growing default types (#20991) [syntax-errors] Name is parameter and global (#20426) [ty] Disable panicking mdtest (#21016) [ty] Fix completions at end of file (#20993) [ty] Fix out-of-order semantic token for function with regular argument after kwargs (#21013) [ty] Fix auto import for files with `from __future__` import (#20987) [`fastapi`] Handle ellipsis defaults in FAST002 autofix (`FAST002`) (#20810) [`ruff`] Skip autofix for keyword and `__debug__` path params (#20960) [`flake8-bugbear`] Skip `B905` and `B912` if <2 iterables and no starred arguments (#20998) ...
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Closes #20997
This will decrease the number of diagnostics emitted for zip-without-explicit-strict (B905), since previously it triggered on any
zipcall no matter the number of arguments. It may increase the number of diagnostics for map-without-explicit-strict (B912) since it will now trigger on a single starred argument where before it would not. However, the latter rule is inpreviewso this is acceptable.Note - we do not need to make any changes to batched-without-explicit-strict (B911) since that just takes a single iterable.
I am doing this in one PR rather than two because we should keep the behavior of these rules consistent with one another.
For review: apologies for the unreadability of the snapshot for
B905. Unfortunately I saw no way of keeping a small diff and a correct fixture (the fixture labeled a whole block as# Errorwhereas now several in the block became# Ok).Probably simplest to just view the actual snapshot - it's relatively small.