ruff/changelogs/0.5.x.md

Changelog 0.5.x

0.5.0

Check out the blog post for a migration guide and overview of the changes!

Breaking changes

See also, the "Remapped rules" section which may result in disabled rules.

• Follow the XDG specification to discover user-level configurations on macOS (same as on other Unix platforms)
• Selecting ALL now excludes deprecated rules
• The released archives now include an extra level of nesting, which can be removed with --strip-components=1 when untarring.
• The release artifact's file name no longer includes the version tag. This enables users to install via /latest URLs on GitHub.
• The diagnostic ranges for some flake8-bandit rules were modified (#10667).

Deprecations

The following rules are now deprecated:

• syntax-error (E999): Syntax errors are now always shown

Remapped rules

The following rules have been remapped to new rule codes:

• blocking-http-call-in-async-function: ASYNC100 to ASYNC210
• open-sleep-or-subprocess-in-async-function: ASYNC101 split into ASYNC220, ASYNC221, ASYNC230, and ASYNC251
• blocking-os-call-in-async-function: ASYNC102 has been merged into ASYNC220 and ASYNC221
• trio-timeout-without-await: TRIO100 to ASYNC100
• trio-sync-call: TRIO105 to ASYNC105
• trio-async-function-with-timeout: TRIO109 to ASYNC109
• trio-unneeded-sleep: TRIO110 to ASYNC110
• trio-zero-sleep-call: TRIO115 to ASYNC115
• repeated-isinstance-calls: PLR1701 to SIM101

Stabilization

The following rules have been stabilized and are no longer in preview:

• mutable-fromkeys-value (RUF024)
• default-factory-kwarg (RUF026)
• django-extra (S610)
• manual-dict-comprehension (PERF403)
• print-empty-string (FURB105)
• readlines-in-for (FURB129)
• if-expr-min-max (FURB136)
• bit-count (FURB161)
• redundant-log-base (FURB163)
• regex-flag-alias (FURB167)
• isinstance-type-none (FURB168)
• type-none-comparison (FURB169)
• implicit-cwd (FURB177)
• hashlib-digest-hex (FURB181)
• list-reverse-copy (FURB187)
• bad-open-mode (PLW1501)
• empty-comment (PLR2044)
• global-at-module-level (PLW0604)
• misplaced-bare-raise (PLE0744)
• non-ascii-import-name (PLC2403)
• non-ascii-name (PLC2401)
• nonlocal-and-global (PLE0115)
• potential-index-error (PLE0643)
• redeclared-assigned-name (PLW0128)
• redefined-argument-from-local (PLR1704)
• repeated-keyword-argument (PLE1132)
• super-without-brackets (PLW0245)
• unnecessary-list-index-lookup (PLR1736)
• useless-exception-statement (PLW0133)
• useless-with-lock (PLW2101)

The following behaviors have been stabilized:

• is-literal (F632) now warns for identity checks against list, set or dictionary literals
• needless-bool (SIM103) now detects if expressions with implicit else branches
• module-import-not-at-top-of-file (E402) now allows os.environ modifications between import statements
• type-comparison (E721) now allows idioms such as type(x) is int
• yoda-condition (SIM300) now flags a wider range of expressions

Removals

The following deprecated settings have been removed:

• output-format=text; use output-format=concise or output-format=full
• tab-size; use indent-width

The following deprecated CLI options have been removed:

• --show-source; use --output-format=full
• --no-show-source; use --output-format=concise

The following deprecated CLI commands have been removed:

• ruff <path>; use ruff check <path>
• ruff --clean; use ruff clean
• ruff --generate-shell-completion; use ruff generate-shell-completion

Preview features

• `ruff`

CLI

• Use rule name rather than message in --statistics (#11697)
• Use the output format full by default (#12010)
• Don't log syntax errors to the console (#11902)

Rule changes

• `ruff`

• `numpy`

• `flake8-bandit`

Server

• Closing an untitled, unsaved notebook document no longer throws an error (#11942)
• Support the usage of tildes and environment variables in logFile (#11945)
• Add option to configure whether to show syntax errors (#12059)

Bug fixes

• `pycodestyle`

• `pep8-naming`

• `pyflakes`

Parser

• Emit a syntax error for an empty type parameter list (#12030)
• Avoid consuming the newline for unterminated strings (#12067)
• Do not include the newline in the unterminated string range (#12017)
• Use the correct range to highlight line continuation errors (#12016)
• Consider 2-character EOL before line continuations (#12035)
• Consider line continuation character for re-lexing (#12008)

Other changes

• Upgrade the Unicode table used for measuring the line-length (#11194)
• Remove the deprecation error message for the nursery selector (#10172)

0.5.1

Preview features

• `flake8-bugbear`

• `pycodestyle`

• `pytest`

Rule changes

• Enable token-based rules on source with syntax errors (#11950)

• `flake8-bandit`

• `numpy`

• `pylint`

Server

• Avoid syntax error notification for source code actions (#12148)
• Consider the content of the new cells during notebook sync (#12203)
• Fix replacement edit range computation (#12171)

Bug fixes

• Disable auto-fix when source has syntax errors (#12134)
• Fix cache key collisions for paths with separators (#12159)
• Make requires-python inference robust to == (#12091)
• Use char-wise width instead of str-width (#12135)

• `pycodestyle`

• `pycodestyle`

• `pylint`

Performance

• Remove allocation in parse_identifier (#12103)
• Use CompactString for Identifier AST node (#12101)

0.5.2

Preview features

• Use space separator before parenthesized expressions in comprehensions with leading comments (#12282)

• `flake8-async`

• `flake8-async`

• `flake8-async`

• `flake8-async`

• `flake8-async`

Rule changes

• `flake8-return`

• `numpy`

• `refurb`

Server

• Consider include and extend-include settings in native server (#12252)
• Include nested configurations in settings reloading (#12253)

CLI

• Omit code frames for fixes with empty ranges (#12304)
• Warn about formatter incompatibility for D203 (#12238)

Bug fixes

• Make cache-write failures non-fatal on Windows (#12302)
• Treat not operations as boolean tests (#12301)

• `flake8-bandit`

• `flake8-bandit`

• `flake8-bandit`

• `pycodestyle`

• `pyflakes`

• `refurb`

Documentation

• Update help and documentation to reflect --output-format full default (#12248)

Performance

• Use more threads when discovering Python files (#12258)

0.5.3

Ruff 0.5.3 marks the stable release of the Ruff language server and introduces revamped documentation, including setup guides for your editor of choice and the language server itself.

Preview features

• Formatter: Insert empty line between suite and alternative branch after function/class definition (#12294)

• `pyupgrade`

Rule changes

• `flake8-bugbear`

• `flake8-bugbear`

• `pylint`

• `pylint`

• `pylint`

Server

• Build settings index in parallel for the native server (#12299)
• Use fallback settings when indexing the project (#12362)
• Consider --preview flag for server subcommand for the linter and formatter (#12208)

Bug fixes

• `flake8-comprehensions`

• `pylint`

• `pylint`

Documentation

• Add docs for Ruff language server (#12344)
• Migrate to standalone docs repo (#12341)
• Update versioning policy for editor integration (#12375)

Other changes

• Publish Wasm API to npm (#12317)

0.5.4

Rule changes

• `ruff`

Bug fixes

• `flake8-builtins`

• `flake8-comprehensions`

• `pydocstyle`

Documentation

• Fix GitHub link to Neovim setup (#12410)
• Fix output-format default in settings reference (#12409)

0.5.5

Preview features

• `fastapi`

• `pydoclint`

Rule changes

• `numpy`

• `numpy`

• `pep8-naming`

Formatter

• Fix incorrect placement of leading function comment with type params (#12447)

Server

• Do not bail code action resolution when a quick fix is requested (#12462)

Bug fixes

• Fix Ord implementation of cmp_fix (#12471)
• Raise syntax error for unparenthesized generator expression in multi-argument call (#12445)

• `pydoclint`

• `flake8-bugbear`

Documentation

• Add Eglot setup guide for Emacs editor (#12426)
• Add note about the breaking change in nvim-lspconfig (#12507)
• Add note to include notebook files for native server (#12449)
• Add setup docs for Zed editor (#12501)

0.5.6

Ruff 0.5.6 automatically enables linting and formatting of notebooks in preview mode. You can opt-out of this behavior by adding *.ipynb to the extend-exclude setting.

[tool.ruff]
extend-exclude = ["*.ipynb"]

Preview features

• Enable notebooks by default in preview mode (#12621)

• `flake8-builtins`

• `pydoclint`

Rule changes

• `flake8-return`

Server

• Make server panic hook more error resilient (#12610)
• Use $/logTrace for server trace logs in Zed and VS Code (#12564)
• Keep track of deleted cells for reorder change request (#12575)

Configuration

• `flake8-implicit-str-concat`

Bug fixes

• `flake8-async`

• `flake8-slots`

• `isort`

• `isort`

• `pycodestyle`

• `pycodestyle`

• `pyflakes`

• `pylint`

• `pyupgrade`

• `pyupgrade`

• Fix NFKC normalization bug when removing unused imports (#12571)

Other changes

• Consider more stdlib decorators to be property-like (#12583)
• Improve handling of metaclasses in various linter rules (#12579)
• Improve consistency between linter rules in determining whether a function is property (#12581)

0.5.7

Preview features

• `flake8-comprehensions`

• `flake8-pyi`

• `flake8-return`

• `pydoclint`

• `pydoclint`

• `pydoclint`

• `pydoclint`

• `pydoclint`

• `ruff`

• `ruff`

Rule changes

• `refurb`

• `ruff`

• `tryceratops`

Server

• Ignore non-file workspace URL; Ruff will display a warning notification in this case (#12725)

CLI

• Fix cache invalidation for nested pyproject.toml files (#12727)

Bug fixes

• `flake8-async`

• `flake8-bandit`

• `flake8-bugbear`

• `flake8-comprehensions`

• `flake8-simplify`

• `pydoclint`