Release Notes

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] Implement unnecessary-default-type-args (UP043) (#12371)

Rule changes

• [flake8-bugbear] Detect enumerate iterations in loop-iterator-mutation (B909) (#12366)
• [flake8-bugbear] Remove discard, remove, and pop allowance for loop-iterator-mutation (B909) (#12365)
• [pylint] Allow repeated-equality-comparison for mixed operations (PLR1714) (#12369)
• [pylint] Ignore self and cls when counting arguments (PLR0913) (#12367)
• [pylint] Use UTF-8 as default encoding in unspecified-encoding fix (PLW1514) (#12370)

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] Allow additional arguments for sum and max comprehensions (C419) (#12364)
• [pylint] Avoid dropping extra boolean operations in repeated-equality-comparison (PLR1714) (#12368)
• [pylint] Consider expression before statement when determining binding kind (PLR1704) (#12346)

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)

Contributors

• @AlexWaygood
• @MichaReiser
• @cake-monotone
• @carljm
• @charliermarsh
• @dhruvmanila
• @github-actions
• @konstin
• @mattrunyon
• @renovate

Install ruff 0.5.3

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.5.3/ruff-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -c "irm https://github.com/astral-sh/ruff/releases/download/0.5.3/ruff-installer.ps1 | iex"

Download ruff 0.5.3