ruff/CHANGELOG.md

Changelog

0.1.11

Preview features

• [pylint] Implement super-without-brackets (W0245) (#9257)

Bug fixes

• Check path string properly in python -m ruff invocations (#9367)

Documentation

• Tweak relative-imports message (#9365)
• Add fix safety note for yield-in-for-loop (#9364)

0.1.10

Preview features

• Improve dummy_implementations preview style formatting (#9240)
• Normalise Hex and unicode escape sequences in strings (#9280)
• Parenthesize long type annotations in annotated assignments (#9210)
• Parenthesize multi-context managers in with statements (#9222)
• [flake8-pyi] Implement generator-return-from-iter-method (PYI058) (#9313)
• [pylint] Implement empty-comment (PLR2044) (#9174)
• [refurb] Implement bit-count (FURB161) (#9265)
• [ruff] Add never-union rule to detect redundant typing.NoReturn and typing.Never (#9217)

CLI

• Add paths to TOML parse errors (#9358)
• Add row and column numbers to formatter parse errors (#9321)
• Improve responsiveness when invoked via Python (#9315)
• Short rule messages should not end with a period (#9345)

Configuration

• Respect runtime-required decorators on functions (#9317)

Bug fixes

• Avoid asyncio-dangling-task for nonlocal and global bindings (#9263)
• Escape trailing placeholders in rule documentation (#9301)
• Fix continuation detection following multi-line strings (#9332)
• Fix scoping for generators in named expressions in classes (#9248)
• Port from obsolete wsl crate to is-wsl (#9356)
• Remove special pre-visit for module docstrings (#9261)
• Respect __str__ definitions from super classes (#9338)
• Respect unused-noqa via per-file-ignores (#9300)
• Respect attribute chains when resolving builtin call paths (#9309)
• Treat all typing_extensions members as typing aliases (#9335)
• Use Display for formatter parse errors (#9316)
• Wrap subscripted dicts in parens for f-string conversion (#9238)
• [flake8-annotations] Avoid adding return types to stub methods (#9277)
• [flake8-annotations] Respect mixed return and raise cases in return-type analysis (#9310)
• [flake8-bandit] Don't report violations when SafeLoader is imported from yaml.loader (S506) (#9299)
• [pylint] Avoid panic when comment is preceded by Unicode (#9331)
• [pylint] Change PLR0917 error message to match other PLR09XX messages (#9308)
• [refurb] Avoid false positives for math-constant (FURB152) (#9290)

Documentation

• Expand target name for better rule documentation (#9302)
• Fix typos found by codespell (#9346)
• [perflint] Document PERF102 fix un-safety (#9351)
• [pyupgrade] Document UP007 fix un-safety (#9306)

0.1.9

Breaking changes

• Add site-packages to default exclusions (#9188)

Preview features

• Fix: Avoid parenthesizing subscript targets and values (#9209)
• [pylint] Implement too-many-locals (PLR0914) (#9163)
• Implement reimplemented_operator (FURB118) (#9171)
• Add a rule to detect string members in runtime-evaluated unions (#9143)
• Implement no_blank_line_before_class_docstring preview style (#9154)

Rule changes

• CONSTANT_CASE variables are improperly flagged for yoda violation (SIM300) (#9164)
• [flake8-pyi] Cover ParamSpecs and TypeVarTuples (PYI018) (#9198)
• [flake8-bugbear] Add fix for zip-without-explicit-strict (B905) (#9176)
• Add fix to automatically remove print and pprint statements (T201, T203) (#9208)
• Prefer Never to NoReturn in auto-typing in Python >= 3.11 (ANN201) (#9213)

Formatter

• can_omit_optional_parentheses: Exit early for unparenthesized expressions (#9125)
• Fix dynamic mode with doctests so that it doesn't exceed configured line width (#9129)
• Fix can_omit_optional_parentheses for expressions with a right most fstring (#9124)
• Add target_version to formatter options (#9220)

CLI

• Update ruff format --check to display message for already formatted files (#9153)

Bug fixes

• Reverse order of arguments for operator.contains (#9192)
• Iterate over lambdas in deferred type annotations (#9175)
• Fix panic in D208 with multibyte indent (#9147)
• Add support for NoReturn in auto-return-typing (#9206)
• Allow removal of typing from exempt-modules (#9214)
• Avoid mutable-class-default violations for Pydantic subclasses (#9187)
• Fix dropped union expressions for piped non-types in PYI055 autofix (#9161)
• Enable annotation quoting for multi-line expressions (#9142)
• Deduplicate edits when quoting annotations (#9140)
• Prevent invalid utf8 indexing in cell magic detection (#9146)
• Avoid nested quotations in auto-quoting fix (#9168)
• Add base-class inheritance detection to flake8-django rules (#9151)
• Avoid asyncio-dangling-task violations on shadowed bindings (#9215)

Documentation

• Fix blog post URL in changelog (#9119)
• Add error suppression hint for multi-line strings (#9205)
• Fix typo in SemanticModel.parent_expression docstring (#9167)
• Document link between import sorting and formatter (#9117)

0.1.8

This release includes opt-in support for formatting Python snippets within docstrings via the docstring-code-format setting. Check out the blog post for more details!

Preview features

• Add "preserve" quote-style to mimic Black's skip-string-normalization (#8822)
• Implement prefer_splitting_right_hand_side_of_assignments preview style (#8943)
• [pycodestyle] Add fix for unexpected-spaces-around-keyword-parameter-equals (#9072)
• [pycodestyle] Add fix for comment-related whitespace rules (#9075)
• [pycodestyle] Allow sys.path modifications between imports (#9047)
• [refurb] Implement hashlib-digest-hex (FURB181) (#9077)

Rule changes

• Allow flake8-type-checking rules to automatically quote runtime-evaluated references (#6001)
• Allow transparent cell magics in Jupyter Notebooks (#8911)
• [flake8-annotations] Avoid ANN2xx fixes for abstract methods with empty bodies (#9034)
• [flake8-self] Ignore underscore references in type annotations (#9036)
• [pep8-naming] Allow class names when apps.get_model is a non-string (#9065)
• [pycodestyle] Allow matplotlib.use calls to intersperse imports (#9094)
• [pyflakes] Support fixing unused assignments in tuples by renaming variables (F841) (#9107)
• [pylint] Add fix for subprocess-run-without-check (PLW1510) (#6708)

Formatter

• Add docstring-code-format knob to enable docstring snippet formatting (#8854)
• Use double quotes for all docstrings, including single-quoted docstrings (#9020)
• Implement "dynamic" line width mode for docstring code formatting (#9098)
• Support reformatting Markdown code blocks (#9030)
• add support for formatting reStructuredText code snippets (#9003)
• Avoid trailing comma for single-argument with positional separator (#9076)
• Fix handling of trailing target comment (#9051)

CLI

• Hide unsafe fix suggestions when explicitly disabled (#9095)
• Add SARIF support to --output-format (#9078)

Bug fixes

• Apply unnecessary index rule prior to enumerate rewrite (#9012)
• [flake8-err-msg] Allow EM fixes even if msg variable is defined (#9059)
• [flake8-pie] Prevent keyword arguments duplication (#8450)
• [flake8-pie] Respect trailing comma in unnecessary-dict-kwargs (PIE804) (#9015)
• [flake8-raise] Avoid removing parentheses on ctypes.WinError (#9027)
• [isort] Avoid invalid combination of force-sort-within-types and lines-between-types (#9041)
• [isort] Ensure that from-style imports are always ordered first in __future__ (#9039)
• [pycodestyle] Allow tab indentation before keyword (#9099)
• [pylint] Ignore @overrides and @overloads for too-many-positional (#9000)
• [pyupgrade] Enable printf-string-formatting fix with comments on right-hand side (#9037)
• [refurb] Make math-constant (FURB152) rule more targeted (#9054)
• [refurb] Support floating-point base in redundant-log-base (FURB163) (#9100)
• [ruff] Detect unused-asyncio-dangling-task (RUF006) on unused assignments (#9060)

0.1.7

Preview features

• Implement multiline dictionary and list hugging for preview style (#8293)
• Implement the fix_power_op_line_length preview style (#8947)
• Use Python version to determine typing rewrite safety (#8919)
• [flake8-annotations] Enable auto-return-type involving Optional and Union annotations (#8885)
• [flake8-bandit] Implement django-raw-sql (S611) (#8651)
• [flake8-bandit] Implement tarfile-unsafe-members (S202) (#8829)
• [flake8-pyi] Implement fix for unnecessary-literal-union (PYI030) (#7934)
• [flake8-simplify] Extend dict-get-with-none-default (SIM910) to non-literals (#8762)
• [pylint] - add unnecessary-list-index-lookup (PLR1736) + autofix (#7999)
• [pylint] - implement R0202 and R0203 with autofixes (#8335)
• [pylint] Implement repeated-keyword (PLe1132) (#8706)
• [pylint] Implement too-many-positional (PLR0917) (#8995)
• [pylint] Implement unnecessary-dict-index-lookup (PLR1733) (#8036)
• [refurb] Implement redundant-log-base (FURB163) (#8842)

Rule changes

• [flake8-boolean-trap] Allow booleans in @override methods (#8882)
• [flake8-bugbear] Avoid B015,B018 for last expression in a cell (#8815)
• [flake8-pie] Allow ellipses for enum values in stub files (#8825)
• [flake8-pyi] Check PEP 695 type aliases for snake-case-type-alias and t-suffixed-type-alias (#8966)
• [flake8-pyi] Check for kwarg and vararg NoReturn type annotations (#8948)
• [flake8-simplify] Omit select context managers from SIM117 (#8801)
• [pep8-naming] Allow Django model loads in non-lowercase-variable-in-function (N806) (#8917)
• [pycodestyle] Avoid E703 for last expression in a cell (#8821)
• [pycodestyle] Update E402 to work at cell level for notebooks (#8872)
• [pydocstyle] Avoid D100 for Jupyter Notebooks (#8816)
• [pylint] Implement fix for unspecified-encoding (PLW1514) (#8928)

Formatter

• Avoid unstable formatting in ellipsis-only body with trailing comment (#8984)
• Inline trailing comments for type alias similar to assignments (#8941)
• Insert trailing comma when function breaks with single argument (#8921)

CLI

• Update ruff check and ruff format to default to the current directory (#8791)
• Stop at the first resolved parent configuration (#8864)

Configuration

• [pylint] Default max-positional-args to max-args (#8998)
• [pylint] Add allow-dunder-method-names setting for bad-dunder-method-name (PLW3201) (#8812)
• [isort] Add support for from-first setting (#8663)
• [isort] Add support for length-sort settings (#8841)

Bug fixes

• Add support for @functools.singledispatch (#8934)
• Avoid off-by-one error in stripping noqa following multi-byte char (#8979)
• Avoid off-by-one error in with-item named expressions (#8915)
• Avoid syntax error via invalid ur string prefix (#8971)
• Avoid underflow in get_model matching (#8965)
• Avoid unnecessary index diagnostics when value is modified (#8970)
• Convert over-indentation rule to use number of characters (#8983)
• Detect implicit returns in auto-return-types (#8952)
• Fix start >= end error in over-indentation (#8982)
• Ignore @overload and @override methods for too-many-arguments checks (#8954)
• Lexer start of line is false only for Mode::Expression (#8880)
• Mark pydantic_settings.BaseSettings as having default copy semantics (#8793)
• Respect dictionary unpacking in NamedTuple assignments (#8810)
• Respect local subclasses in flake8-type-checking (#8768)
• Support type alias statements in simple statement positions (#8916)
• [flake8-annotations] Avoid filtering out un-representable types in return annotation (#8881)
• [flake8-pie] Retain extra ellipses in protocols and abstract methods (#8769)
• [flake8-pyi] Respect local enum subclasses in simple-defaults (PYI052) (#8767)
• [flake8-trio] Use correct range for TRIO115 fix (#8933)
• [flake8-trio] Use full arguments range for zero-sleep-call (#8936)
• [isort] fix: mark __main__ as first-party import (#8805)
• [pep8-naming] Avoid N806 errors for type alias statements (#8785)
• [perflint] Avoid PERF101 if there's an append in loop body (#8809)
• [pycodestyle] Allow space-before-colon after end-of-slice (#8838)
• [pydocstyle] Avoid non-character breaks in over-indentation (D208) (#8866)
• [pydocstyle] Ignore underlines when determining docstring logical lines (#8929)
• [pylint] Extend self-assigning-variable to multi-target assignments (#8839)
• [tryceratops] Avoid repeated triggers in nested tryceratops diagnostics (#8772)

Documentation

• Add advice for fixing RUF008 when mutability is not desired (#8853)
• Added the command to run ruff using pkgx to the installation.md (#8955)
• Document fix safety for flake8-comprehensions and some pyupgrade rules (#8918)
• Fix doc formatting for zero-sleep-call (#8937)
• Remove duplicate imports from os-stat documentation (#8930)
• Replace generated reference to MkDocs (#8806)
• Update Arch Linux package URL in installation.md (#8802)
• [flake8-pyi] Fix error in t-suffixed-type-alias (PYI043) example (#8963)
• [flake8-pyi] Improve motivation for custom-type-var-return-type (PYI019) (#8766)

0.1.6

Preview features

• [flake8-boolean-trap] Extend boolean-type-hint-positional-argument (FBT001) to include booleans in unions (#7501)
• [flake8-pie] Extend reimplemented-list-builtin (PIE807) to dict reimplementations (#8608)
• [flake8-pie] Extend unnecessary-pass (PIE790) to include ellipses (...) (#8641)
• [flake8-pie] Implement fix for unnecessary-spread (PIE800) (#8668)
• [flake8-quotes] Implement unnecessary-escaped-quote (Q004) (#8630)
• [pycodestyle] Implement fix for multiple-spaces-after-keyword (E271) and multiple-spaces-before-keyword (E272) (#8622)
• [pycodestyle] Implement fix for multiple-spaces-after-operator (E222) and multiple-spaces-before-operator (E221) (#8623)
• [pyflakes] Extend is-literal (F632) to include comparisons against mutable initializers (#8607)
• [pylint] Implement redefined-argument-from-local (PLR1704) (#8159)
• [pylint] Implement fix for unnecessary-lambda (PLW0108) (#8621)
• [refurb] Implement if-expr-min-max (FURB136) (#8664)
• [refurb] Implement math-constant (FURB152) (#8727)

Rule changes

• [flake8-annotations] Add autotyping-like return type inference for annotation rules (#8643)
• [flake8-future-annotations] Implement fix for future-required-type-annotation (FA102) (#8711)
• [flake8-implicit-namespace-package] Avoid missing namespace violations in scripts with shebangs (#8710)
• [pydocstyle] Update over-indentation (D208) to preserve indentation offsets when fixing overindented lines (#8699)
• [pyupgrade] Refine timeout-error-alias (UP041) to remove false positives (#8587)

Formatter

• Fix instability in await formatting with fluent style (#8676)
• Compare formatted and unformatted ASTs during formatter tests (#8624)
• Preserve trailing semicolon for Notebooks (#8590)

CLI

• Improve debug printing for resolving origin of config settings (#8729)
• Write unchanged, excluded files to stdout when read via stdin (#8596)

Configuration

• [isort] Support disabling sections with no-sections = true (#8657)
• [pep8-naming] Support local and dynamic class- and static-method decorators (#8592)
• [pydocstyle] Allow overriding pydocstyle convention rules (#8586)

Bug fixes

• Avoid syntax error via importing trio.lowlevel (#8730)
• Omit unrolled augmented assignments in PIE794 (#8634)
• Slice source code instead of generating it for EM fixes (#7746)
• Allow whitespace around colon in slices for whitespace-before-punctuation (E203) (#8654)
• Use function range for no-self-use (#8637)
• F-strings doesn't contain bytes literal for PLW0129 (#8675)
• Improve detection of TYPE_CHECKING blocks imported from typing_extensions or _typeshed (#8429)
• Treat display as a builtin in IPython (#8707)
• Avoid FURB113 autofix if comments are present (#8494)
• Consider the new f-string tokens for flake8-commas (#8582)
• Remove erroneous bad-dunder-name reference (#8742)
• Avoid recommending Self usages in metaclasses (#8639)
• Detect runtime-evaluated base classes defined in the current file (#8572)
• Avoid inserting trailing commas within f-strings (#8574)
• Remove incorrect deprecation label for stdout and stderr (#8743)
• Fix unnecessary parentheses in UP007 fix (#8610)
• Remove repeated and erroneous scoped settings headers in docs (#8670)
• Trim trailing empty strings when converting to f-strings (#8712)
• Fix ordering for force-sort-within-sections (#8665)
• Run unicode prefix rule over tokens (#8709)
• Update UP032 to unescape curly braces in literal parts of converted strings (#8697)
• List all ipython builtins (#8719)

Documentation

• Document conventions in the FAQ (#8638)
• Redirect from rule codes to rule pages in docs (#8636)
• Fix permalink to convention setting (#8575)

0.1.5

Preview features

• [flake8-bandit] Implement mako-templates (S702) (#8533)
• [flake8-trio] Implement TRIO105 (#8490)
• [flake8-trio] Implement TRIO109 (#8534)
• [flake8-trio] Implement TRIO110 (#8537)
• [flake8-trio] Implement TRIO115 (#8486)
• [refurb] Implement type-none-comparison (FURB169) (#8487)
• Flag all comparisons against builtin types in E721 (#8491)
• Make SIM118 fix as safe when the expression is a known dictionary (#8525)

Formatter

• Fix multiline lambda expression statement formatting (#8466)

CLI

• Add hidden --extension to override inference of source type from file extension (#8373)

Configuration

• Account for selector specificity when merging extend_unsafe_fixes and override extend_safe_fixes (#8444)
• Add support for disabling cache with RUFF_NO_CACHE environment variable (#8538)

Bug fixes

• [E721] Flag comparisons to memoryview (#8485)
• Allow collapsed-ellipsis bodies in other statements (#8499)
• Avoid D301 autofix for u prefixed strings (#8495)
• Only flag flake8-trio rules when trio import is present (#8550)
• Reject more syntactically invalid Python programs (#8524)
• Avoid raising TRIO115 violations for trio.sleep(...) calls with non-number values (#8532)
• Fix F841 false negative on assignment to multiple variables (#8489)

Documentation

• Fix link to isort known-first-party (#8562)
• Add notes on fix safety to a few rules (#8500)
• Add missing toml config tabs (#8512)
• Add instructions for configuration of Emacs (#8488)
• Improve detail link contrast in dark mode (#8548)
• Fix typo in example (#8506)
• Added tabs for configuration files in the documentation (#8480)
• Recommend project.requires-python over target-version (#8513)
• Add singleton escape hatch to B008 documentation (#8501)
• Fix tab configuration docs (#8502)

0.1.4

Preview features

• [flake8-trio] Implement timeout-without-await (TRIO001) (#8439)
• [numpy] Implement NumPy 2.0 migration rule (NPY200) (#7702)
• [pylint] Implement bad-open-mode (W1501) (#8294)
• [pylint] Implement import-outside-toplevel (C0415) rule (#5180)
• [pylint] Implement useless-with-lock (W2101) (#8321)
• [pyupgrade] Implement timeout-error-alias (UP041) (#8476)
• [refurb] Implement isinstance-type-none (FURB168) (#8308)
• Detect confusable Unicode-to-Unicode units in RUF001, RUF002, and RUF003 (#4430)
• Add newline after module docstrings in preview style (#8283)

Formatter

• Add a note on line-too-long to the formatter docs (#8314)
• Preserve trailing statement semicolons when using fmt: skip (#8273)
• Preserve trailing semicolons when using fmt: off (#8275)
• Avoid duplicating linter-formatter compatibility warnings (#8292)
• Avoid inserting a newline after function docstrings (#8375)
• Insert newline between docstring and following own line comment (#8216)
• Split tuples in return positions by comma first (#8280)
• Avoid treating byte strings as docstrings (#8350)
• Add --line-length option to format command (#8363)
• Avoid parenthesizing unsplittable because of comments (#8431)

CLI

• Add --output-format to ruff rule and ruff linter (#8203)

Bug fixes

• Respect --force-exclude in lint.exclude and format.exclude (#8393)
• Respect --extend-per-file-ignores on the CLI (#8329)
• Extend bad-dunder-method-name to permit __index__ (#8300)
• Fix panic with 8 in octal escape (#8356)
• Avoid raising D300 when both triple quote styles are present (#8462)
• Consider unterminated f-strings in FStringRanges (#8154)
• Avoid including literal shell=True for truthy, non-True diagnostics (#8359)
• Avoid triggering single-element test for starred expressions (#8433)
• Detect and ignore Jupyter automagics (#8398)
• Fix invalid E231 error with f-strings (#8369)
• Avoid triggering NamedTuple rewrite with starred annotation (#8434)
• Avoid un-setting bracket flag in logical lines (#8380)
• Place 'r' prefix before 'f' for raw format strings (#8464)
• Remove trailing periods from NumPy 2.0 code actions (#8475)
• Fix bug where PLE1307 was raised when formatting %c with characters (#8407)
• Remove unicode flag from comparable (#8440)
• Improve B015 message (#8295)
• Use fixedOverflowWidgets for playground popover (#8458)
• Mark byte_bounds as a non-backwards-compatible NumPy 2.0 change (#8474)

Internals

• Add a dedicated cache directory per Ruff version (#8333)
• Allow selective caching for --fix and --diff (#8316)
• Improve performance of comment parsing (#8193)
• Improve performance of string parsing (#8227)
• Use a dedicated sort key for isort import sorting (#7963)

0.1.3

This release includes a variety of improvements to the Ruff formatter, removing several known and unintentional deviations from Black.

Formatter

• Avoid space around pow for None, True and False (#8189)
• Avoid sorting all paths in the format command (#8181)
• Insert necessary blank line between class and leading comments (#8224)
• Avoid introducing new parentheses in annotated assignments (#8233)
• Refine the warnings about incompatible linter options (#8196)
• Add test and basic implementation for formatter preview mode (#8044)
• Refine warning about incompatible isort settings (#8192)
• Only omit optional parentheses for starting or ending with parentheses (#8238)
• Use source type to determine parser mode for formatting (#8205)
• Don't warn about magic trailing comma when isort.force-single-line is true (#8244)
• Use SourceKind::diff for formatter (#8240)
• Fix fmt:off with trailing child comment (#8234)
• Formatter parentheses support for IpyEscapeCommand (#8207)

Linter

• [pylint] Add buffer methods to bad-dunder-method-name (PLW3201) exclusions (#8190)
• Match rule prefixes from external codes setting in unused-noqa (#8177)
• Use line-length setting for isort in lieu of pycodestyle.max-line-length (#8235)
• Update fix for unnecessary-paren-on-raise-exception to unsafe for unknown types (#8231)
• Correct quick fix message for W605 (#8255)

Documentation

• Fix typo in max-doc-length documentation (#8201)
• Improve documentation around linter-formatter conflicts (#8257)
• Fix link to error suppression documentation in unused-noqa (#8172)
• Add external option to unused-noqa documentation (#8171)
• Add title attribute to icons (#8060)
• Clarify unsafe case in RSE102 (#8256)
• Fix skipping formatting examples (#8210)
• docs: fix name of magic-trailing-comma option in README (#8200)
• Add note about scope of rule changing in versioning policy (#8169)
• Document: Fix default lint rules (#8218)
• Fix a wrong setting in configuration.md (#8186)
• Fix misspelled TOML headers in the tutorial (#8209)

0.1.2

This release includes the Beta version of the Ruff formatter — an extremely fast, Black-compatible Python formatter. Try it today with ruff format! Check out the blog post and read the docs.

Preview features

• [pylint] Implement non-ascii-module-import (C2403) (#8056)
• [pylint] implement non-ascii-name (C2401) (#8038)
• [pylint] Implement unnecessary-lambda (W0108) (#7953)
• [refurb] Implement read-whole-file (FURB101) (#7682)
• Add fix for E223, E224, and E242 (#8143)
• Add fix for E225, E226, E227, and E228 (#8136)
• Add fix for E252 (#8142)
• Add fix for E261 (#8114)
• Add fix for E273 and E274 (#8144)
• Add fix for E275 (#8133)
• Update SIM401 to catch ternary operations (#7415)
• Update E721 to allow is and is not for direct type comparisons (#7905)

Rule changes

• Add backports.strenum to deprecated-imports (#8113)
• Update SIM112 to ignore https_proxy, http_proxy, and no_proxy (#8140)
• Update fix for literal-membership (PLR6201) to be unsafe (#8097)
• Update fix for mutable-argument-defaults (B006) to be unsafe (#8108)

Formatter

• Change line-ending default to auto (#8057)
• Respect parenthesized generators in has_own_parentheses (#8100)
• Add caching to formatter (#8089)
• Remove --line-length option from format command (#8131)
• Add formatter to line-length documentation (#8150)
• Warn about incompatible formatter options (#8088)
• Fix range of unparenthesized tuple subject in match statement (#8101)
• Remove experimental formatter warning (#8148)
• Don't move type param opening parenthesis comment (#8163)
• Update versions in format benchmark script (#8110)
• Avoid loading files for cached format results (#8134)

CLI

• Show the ruff format command in help menus (#8167)
• Add ruff version command with long version display (#8034)

Configuration

• New pycodestyle.max-line-length option (#8039)

Bug fixes

• Detect sys.version_info slices in outdated-version-block (#8112)
• Avoid if-else simplification for TYPE_CHECKING blocks (#8072)
• Avoid false-positive print separator diagnostic with starred argument (#8079)

Documentation

• Fix message for too-many-arguments lint (#8092)
• Fix extend-unsafe-fixes and extend-safe-fixes example (#8139)
• Add links to flake8-import-conventions options (#8115)
• Rework the documentation to incorporate the Ruff formatter (#7732)
• Fix Options JSON schema description (#8081)
• Fix typo (pytext -> pytest) (#8117)
• Improve magic-value-comparison example in docs (#8111)

0.1.1

Rule changes

• Add unsafe fix for escape-sequence-in-docstring (D301) (#7970)

Configuration

• Respect #(deprecated) attribute in configuration options (#8035)
• Add [format|lint].exclude options (#8000)
• Respect tab-size setting in formatter (#8006)
• Add lint.preview (#8002)

Preview features

• [pylint] Implement literal-membership (PLR6201) (#7973)
• [pylint] Implement too-many-boolean-expressions (PLR0916) (#7975)
• [pylint] Implement misplaced-bare-raise (E0704) (#7961)
• [pylint] Implement global-at-module-level (W0604) (#8058)
• [pylint] Implement unspecified-encoding (PLW1514) (#7939)
• Add fix for triple-single-quotes (D300) (#7967)

Formatter

• New code style badge for ruff format (#7878)
• Fix comments outside expression parentheses (#7873)
• Add --target-version to ruff format (#8055)
• Skip over parentheses when detecting in keyword (#8054)
• Add --diff option to ruff format (#7937)
• Insert newline after nested function or class statements (#7946)
• Use pass over ellipsis in non-function/class contexts (#8049)

Bug fixes

• Lazily evaluate all PEP 695 type alias values (#8033)
• Avoid failed assertion when showing fixes from stdin (#8029)
• Avoid flagging HTTP and HTTPS literals in urllib-open (#8046)
• Avoid flagging bad-dunder-method-name for _ (#8015)
• Remove Python 2-only methods from URLOpen audit (#8047)
• Use set bracket replacement for iteration-over-set to preserve whitespace and comments (#8001)

Documentation

• Update tutorial to match revised Ruff defaults (#8066)
• Update rule B005 docs (#8028)
• Update GitHub actions example in docs to use --output-format (#8014)
• Document lint.preview and format.preview (#8032)
• Clarify that new rules should be added to RuleGroup::Preview. (#7989)

0.1.0

This is the first release which uses the CHANGELOG file. See GitHub Releases for prior changelog entries.

Read Ruff's new versioning policy.

Breaking changes

• Unsafe fixes are no longer displayed or applied without opt-in (#7769)
• Drop formatting specific rules from the default set (#7900)
• The deprecated format setting has been removed (#7984)
  • The format setting cannot be used to configure the output format, use output-format instead
  • The RUFF_FORMAT environment variable is ignored, use RUFF_OUTPUT_FORMAT instead
  • The --format option has been removed from ruff check, use --output-format instead

Rule changes

• Extend reimplemented-starmap (FURB140) to catch calls with a single and starred argument (#7768)
• Improve cases covered by RUF015 (#7848)
• Update SIM15 to allow open followed by close (#7916)
• Respect msgspec.Struct default-copy semantics in RUF012 (#7786)
• Add sqlalchemy methods to `flake8-boolean-trap`` exclusion list (#7874)
• Add fix for PLR1714 (#7910)
• Add fix for PIE804 (#7884)
• Add fix for PLC0208 (#7887)
• Add fix for PYI055 (#7886)
• Update non-pep695-type-alias to require --unsafe-fixes outside of stub files (#7836)
• Improve fix message for UP018 (#7913)
• Update PLW3201 to support Enum sunder names (#7987)

Preview features

• Only show warnings for empty preview selectors when enabling rules (#7842)
• Add unnecessary-key-check to simplify key in dct and dct[key] to dct.get(key) (#7895)
• Add assignment-in-assert to prevent walrus expressions in assert statements (#7856)
• [refurb] Add single-item-membership-test (FURB171) (#7815)
• [pylint] Add and-or-ternary (R1706) (#7811)

New rules are added in preview.

Configuration

• Add unsafe-fixes setting (#7769)
• Add extend-safe-fixes and extend-unsafe-fixes for promoting and demoting fixes (#7841)

CLI

• Added --unsafe-fixes option for opt-in to display and apply unsafe fixes (#7769)
• Fix use of deprecated --format option in warning (#7837)
• Show changed files when running under --check (#7788)
• Write summary messages to stderr when fixing via stdin instead of omitting them (#7838)
• Update fix summary message in check --diff to include unsafe fix hints (#7790)
• Add notebook cell field to JSON output format (#7664)
• Rename applicability levels to Safe, Unsafe, and Display (#7843)

Bug fixes

• Fix bug where f-strings were allowed in match pattern literal (#7857)
• Fix SIM110 with a yield in the condition (#7801)
• Preserve trailing comments in C414 fixes (#7775)
• Check sequence type before triggering unnecessary-enumerate len suggestion (#7781)
• Use correct start location for class/function clause header (#7802)
• Fix incorrect fixes for SIM101 (#7798)
• Format comment before parameter default correctly (#7870)
• Fix E251 false positive inside f-strings (#7894)
• Allow bindings to be created and referenced within annotations (#7885)
• Show per-cell diffs when analyzing notebooks over stdin (#7789)
• Avoid curly brace escape in f-string format spec (#7780)
• Fix lexing single-quoted f-string with multi-line format spec (#7787)
• Consider nursery rules to be in-preview for ruff rule (#7812)
• Report precise location for invalid conversion flag (#7809)
• Visit pattern match guard as a boolean test (#7911)
• Respect --unfixable in ISC rules (#7917)
• Fix edge case with PIE804 (#7922)
• Show custom message in PTH118 for Path.joinpath with starred arguments (#7852)
• Fix false negative in outdated-version-block when using greater than comparisons (#7920)
• Avoid converting f-strings within Django gettext calls (#7898)
• Fix false positive in PLR6301 (#7933)
• Treat type aliases as typing-only expressions e.g. resolves false positive in TCH004 (#7968)
• Resolve cache-dir relative to project root (#7962)
• Respect subscripted base classes in type-checking rules e.g. resolves false positive in TCH003 (#7954)
• Fix JSON schema limit for line-length (#7883)
• Fix commented-out coalesce keyword (#7876)

Documentation

• Document reimplemented-starmap performance effects (#7846)
• Default to following the system dark/light mode (#7888)
• Add documentation for fixes (#7901)
• Fix typo in docs of PLR6301 (#7831)
• Update UP038 docs to note that it results in slower code (#7872)
• crlf -> cr-lf (#7766)
• Add an example of an unsafe fix (#7924)
• Fix documented examples for unnecessary-subscript-reversal (#7774)
• Correct error in tuple example in ruff formatter docs (#7822)
• Add versioning policy to documentation (#7923)
• Fix invalid code in FURB177 example (#7832)

Formatter

• Less scary ruff format message (#7867)
• Remove spaces from import statements (#7859)
• Formatter quoting for f-strings with triple quotes (#7826)
• Update ruff_python_formatter generate.py comment (#7850)
• Document one-call chaining deviation (#7767)
• Allow f-string modifications in line-shrinking cases (#7818)
• Add trailing comment deviation to README (#7827)
• Add trailing zero between dot and exponential (#7956)
• Force parentheses for power operations in unary expressions (#7955)

Playground

• Fix playground Quick Fix action (#7824)