Sourced from ruff's releases.

0.15.1

Release Notes

Released on 2026-02-12.

Preview features

• [airflow] Add ruff rules to catch deprecated Airflow imports for Airflow 3.1 (AIR321) (#22376)
• [airflow] Third positional parameter not named ti_key should be flagged for BaseOperatorLink.get_link (AIR303) (#22828)
• [flake8-gettext] Fix false negatives for plural argument of ngettext (INT001, INT002, INT003) (#21078)
• [pyflakes] Fix infinite loop in preview fix for unused-import (F401) (#23038)
• [pygrep-hooks] Detect non-existent mock methods in standalone expressions (PGH005) (#22830)
• [pylint] Allow dunder submodules and improve diagnostic range (PLC2701) (#22804)
• [pyupgrade] Improve diagnostic range for tuples (UP024) (#23013)
• [refurb] Check subscripts in tuple do not use lambda parameters in reimplemented-operator (FURB118) (#23079)
• [ruff] Detect mutable defaults in field calls (RUF008) (#23046)
• [ruff] Ignore std cmath.inf (RUF069) (#23120)
• [ruff] New rule float-equality-comparison (RUF069) (#20585)
• Don't format unlabeled Markdown code blocks (#23106)
• Markdown formatting support in LSP (#23063)
• Support Quarto Markdown language markers (#22947)
• Support formatting pycon Markdown code blocks (#23112)
• Use extension mapping to select Markdown code block language (#22934)

Bug fixes

• Avoid false positive for undefined variables in FAST001 (#23224)
• Avoid introducing syntax errors for FAST003 autofix (#23227)
• Avoid suggesting InitVar for __post_init__ that references PEP 695 type parameters (#23226)
• Deduplicate type variables in generic functions (#23225)
• Fix exception handler parenthesis removal for Python 3.14+ (#23126)
• Fix f-string middle panic when parsing t-strings (#23232)
• Wrap RUF020 target for multiline fixes (#23210)
• Wrap UP007 target for multiline fixes (#23208)
• Fix missing diagnostics for last range suppression in file (#23242)
• [pyupgrade] Fix syntax error on string with newline escape and comment (UP037) (#22968)

Rule changes

• Use ruff instead of Ruff as the program name in GitHub output format (#23240)
• [PT006] Fix syntax error when unpacking nested tuples in parametrize fixes (#22441) (#22464)
• [airflow] Catch deprecated attribute access from context key for Airflow 3.0 (AIR301) (#22850)
• [airflow] Capture deprecated arguments and a decorator (AIR301) (#23170)
• [flake8-boolean-trap] Add multiprocessing.Value to excluded functions for FBT003 (#23010)
• [flake8-bugbear] Add a secondary annotation showing the previous occurrence (B033) (#22634)
• [flake8-type-checking] Add sub-diagnostic showing the runtime use of an annotation (TC004) (#23091)
• [isort] Support configurable import section heading comments (#23151)
• [ruff] Improve the diagnostic for RUF012 (#23202)

Formatter

... (truncated)

Sourced from ruff's changelog.

0.15.1

Released on 2026-02-12.

Preview features

• [airflow] Add ruff rules to catch deprecated Airflow imports for Airflow 3.1 (AIR321) (#22376)
• [airflow] Third positional parameter not named ti_key should be flagged for BaseOperatorLink.get_link (AIR303) (#22828)
• [flake8-gettext] Fix false negatives for plural argument of ngettext (INT001, INT002, INT003) (#21078)
• [pyflakes] Fix infinite loop in preview fix for unused-import (F401) (#23038)
• [pygrep-hooks] Detect non-existent mock methods in standalone expressions (PGH005) (#22830)
• [pylint] Allow dunder submodules and improve diagnostic range (PLC2701) (#22804)
• [pyupgrade] Improve diagnostic range for tuples (UP024) (#23013)
• [refurb] Check subscripts in tuple do not use lambda parameters in reimplemented-operator (FURB118) (#23079)
• [ruff] Detect mutable defaults in field calls (RUF008) (#23046)
• [ruff] Ignore std cmath.inf (RUF069) (#23120)
• [ruff] New rule float-equality-comparison (RUF069) (#20585)
• Don't format unlabeled Markdown code blocks (#23106)
• Markdown formatting support in LSP (#23063)
• Support Quarto Markdown language markers (#22947)
• Support formatting pycon Markdown code blocks (#23112)
• Use extension mapping to select Markdown code block language (#22934)

Bug fixes

• Avoid false positive for undefined variables in FAST001 (#23224)
• Avoid introducing syntax errors for FAST003 autofix (#23227)
• Avoid suggesting InitVar for __post_init__ that references PEP 695 type parameters (#23226)
• Deduplicate type variables in generic functions (#23225)
• Fix exception handler parenthesis removal for Python 3.14+ (#23126)
• Fix f-string middle panic when parsing t-strings (#23232)
• Wrap RUF020 target for multiline fixes (#23210)
• Wrap UP007 target for multiline fixes (#23208)
• Fix missing diagnostics for last range suppression in file (#23242)
• [pyupgrade] Fix syntax error on string with newline escape and comment (UP037) (#22968)

Rule changes

• Use ruff instead of Ruff as the program name in GitHub output format (#23240)
• [PT006] Fix syntax error when unpacking nested tuples in parametrize fixes (#22441) (#22464)
• [airflow] Catch deprecated attribute access from context key for Airflow 3.0 (AIR301) (#22850)
• [airflow] Capture deprecated arguments and a decorator (AIR301) (#23170)
• [flake8-boolean-trap] Add multiprocessing.Value to excluded functions for FBT003 (#23010)
• [flake8-bugbear] Add a secondary annotation showing the previous occurrence (B033) (#22634)
• [flake8-type-checking] Add sub-diagnostic showing the runtime use of an annotation (TC004) (#23091)
• [isort] Support configurable import section heading comments (#23151)
• [ruff] Improve the diagnostic for RUF012 (#23202)

Formatter

... (truncated)

• a2f11d2 Prepare for 0.15.1 (#23253)
• d29628e Remove docker-run-action (#23254)
• 8a04266 [ty] Allow discovering dependencies in system Python environments (#22994)
• 55d06c8 Ensure pending suppression diagnostics are reported (#23242)
• d056a9f [isort] support for configurable import section heading comments (#23151)
• e22fa4f [ty] Fix method calls on subclasses of Any (#23248)
• fa56c15 [ty] Fix bound method access on None (#23246)
• 4fd07d0 Make range suppression test snapshot actually useful (#23251)
• 8c63bce [ty] Include conditional symbols (like datetime.UTC) in auto-import in more...
• 46be943 Exclude WASM artifacts from GitHub releases (#23221)
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