Sourced from ruff's releases.

0.8.1

Release Notes

Preview features

• Formatter: Avoid invalid syntax for format-spec with quotes for all Python versions (#14625)
• Formatter: Consider quotes inside format-specs when choosing the quotes for an f-string (#14493)
• Formatter: Do not consider f-strings with escaped newlines as multiline (#14624)
• Formatter: Fix f-string formatting in assignment statement (#14454)
• Formatter: Fix unnecessary space around power operator (**) in overlong f-string expressions (#14489)
• [airflow] Avoid implicit schedule argument to DAG and @dag (AIR301) (#14581)
• [flake8-builtins] Exempt private built-in modules (A005) (#14505)
• [flake8-pytest-style] Fix pytest.mark.parametrize rules to check calls instead of decorators (#14515)
• [flake8-type-checking] Implement runtime-cast-value (TC006) (#14511)
• [flake8-type-checking] Implement unquoted-type-alias (TC007) and quoted-type-alias (TC008) (#12927)
• [flake8-use-pathlib] Recommend Path.iterdir() over os.listdir() (PTH208) (#14509)
• [pylint] Extend invalid-envvar-default to detect os.environ.get (PLW1508) (#14512)
• [pylint] Implement len-test (PLC1802) (#14309)
• [refurb] Fix bug where methods defined using lambdas were flagged by FURB118 (#14639)
• [ruff] Auto-add r prefix when string has no backslashes for unraw-re-pattern (RUF039) (#14536)
• [ruff] Implement invalid-assert-message-literal-argument (RUF040) (#14488)
• [ruff] Implement unnecessary-nested-literal (RUF041) (#14323)
• [ruff] Implement unnecessary-regular-expression (RUF055) (#14659)

Rule changes

• Ignore more rules for stub files (#14541)
• [pep8-naming] Eliminate false positives for single-letter names (N811, N814) (#14584)
• [pyflakes] Avoid false positives in @no_type_check contexts (F821, F722) (#14615)
• [ruff] Detect redirected-noqa in file-level comments (RUF101) (#14635)
• [ruff] Mark fixes for unsorted-dunder-all and unsorted-dunder-slots as unsafe when there are complex comments in the sequence (RUF022, RUF023) (#14560)

Bug fixes

• Avoid fixing code to None | None for redundant-none-literal (PYI061) and never-union (RUF020) (#14583, #14589)
• [flake8-bugbear] Fix mutable-contextvar-default to resolve annotated function calls properly (B039) (#14532)
• [flake8-pyi, ruff] Fix traversal of nested literals and unions (PYI016, PYI051, PYI055, PYI062, RUF041) (#14641)
• [flake8-pyi] Avoid rewriting invalid type expressions in unnecessary-type-union (PYI055) (#14660)
• [flake8-type-checking] Avoid syntax errors and type checking problem for quoted annotations autofix (TC003, TC006) (#14634)
• [pylint] Do not wrap function calls in parentheses in the fix for unnecessary-dunder-call (PLC2801) (#14601)
• [ruff] Handle attrs's auto_attribs correctly (RUF009) (#14520)

Contributors

• @​AlexWaygood
• @​Daverball
• @​Glyphack
• @​InSyncWithFoo
• @​Lokejoke
• @​MichaReiser
• @​cake-monotone

... (truncated)

Sourced from ruff's changelog.

0.8.1

Preview features

• Formatter: Avoid invalid syntax for format-spec with quotes for all Python versions (#14625)
• Formatter: Consider quotes inside format-specs when choosing the quotes for an f-string (#14493)
• Formatter: Do not consider f-strings with escaped newlines as multiline (#14624)
• Formatter: Fix f-string formatting in assignment statement (#14454)
• Formatter: Fix unnecessary space around power operator (**) in overlong f-string expressions (#14489)
• [airflow] Avoid implicit schedule argument to DAG and @dag (AIR301) (#14581)
• [flake8-builtins] Exempt private built-in modules (A005) (#14505)
• [flake8-pytest-style] Fix pytest.mark.parametrize rules to check calls instead of decorators (#14515)
• [flake8-type-checking] Implement runtime-cast-value (TC006) (#14511)
• [flake8-type-checking] Implement unquoted-type-alias (TC007) and quoted-type-alias (TC008) (#12927)
• [flake8-use-pathlib] Recommend Path.iterdir() over os.listdir() (PTH208) (#14509)
• [pylint] Extend invalid-envvar-default to detect os.environ.get (PLW1508) (#14512)
• [pylint] Implement len-test (PLC1802) (#14309)
• [refurb] Fix bug where methods defined using lambdas were flagged by FURB118 (#14639)
• [ruff] Auto-add r prefix when string has no backslashes for unraw-re-pattern (RUF039) (#14536)
• [ruff] Implement invalid-assert-message-literal-argument (RUF040) (#14488)
• [ruff] Implement unnecessary-nested-literal (RUF041) (#14323)
• [ruff] Implement unnecessary-regular-expression (RUF055) (#14659)

Rule changes

• Ignore more rules for stub files (#14541)
• [pep8-naming] Eliminate false positives for single-letter names (N811, N814) (#14584)
• [pyflakes] Avoid false positives in @no_type_check contexts (F821, F722) (#14615)
• [ruff] Detect redirected-noqa in file-level comments (RUF101) (#14635)
• [ruff] Mark fixes for unsorted-dunder-all and unsorted-dunder-slots as unsafe when there are complex comments in the sequence (RUF022, RUF023) (#14560)

Bug fixes

• Avoid fixing code to None | None for redundant-none-literal (PYI061) and never-union (RUF020) (#14583, #14589)
• [flake8-bugbear] Fix mutable-contextvar-default to resolve annotated function calls properly (B039) (#14532)
• [flake8-pyi, ruff] Fix traversal of nested literals and unions (PYI016, PYI051, PYI055, PYI062, RUF041) (#14641)
• [flake8-pyi] Avoid rewriting invalid type expressions in unnecessary-type-union (PYI055) (#14660)
• [flake8-type-checking] Avoid syntax errors and type checking problem for quoted annotations autofix (TC003, TC006) (#14634)
• [pylint] Do not wrap function calls in parentheses in the fix for unnecessary-dunder-call (PLC2801) (#14601)
• [ruff] Handle attrs's auto_attribs correctly (RUF009) (#14520)

• b3b2c98 Update CHANGELOG.md with the new commits for 0.8.1 (#14664)
• abb3c6e [flake8-pyi] Avoid rewriting invalid type expressions in `unnecessary-type-...
• 224fe75 [ruff] Implement unnecessary-regular-expression (RUF055) (#14659)
• dc29f52 [flake8-pyi, ruff] Fix traversal of nested literals and unions (PYI016,...
• d9cbf2f Avoids unnecessary overhead for TC004, when TC001-003 are disabled (#14657)
• 3f6c65e [red-knot] Fix merged type after if-else without explicit else branch (#14621)
• 976c37a Bump version to 0.8.1 (#14655)
• a378ff3 [red-knot] Fix Boolean flags in mdtests (#14654)
• d8bca0d Fix bug where methods defined using lambdas were flagged by FURB118 (#14639)
• 6f1cf5b [red-knot] Minor fix in MRO tests (#14652)
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