ruff 0.4.8

v0.4.8

on Python PyPI

Changes

Performance

• Linter performance has been improved by around 10% on some microbenchmarks by refactoring the lexer and parser to maintain synchronicity between them (#11457)

Preview features

• [flake8-bugbear] Implement return-in-generator (B901) (#11644)
• [flake8-pyi] Implement PYI063 (#11699)
• [pygrep_hooks] Check blanket ignores via file-level pragmas (PGH004) (#11540)

Rule changes

• [pyupgrade] Update UP035 for Python 3.13 and the latest version of typing_extensions (#11693)
• [numpy] Update NPY001 rule for NumPy 2.0 (#11735)

Server

• Formatting a document with syntax problems no longer spams a visible error popup (#11745)

CLI

• Add RDJson support for --output-format flag (#11682)

Bug fixes

• [pyupgrade] Write empty string in lieu of panic when fixing UP032 (#11696)
• [flake8-simplify] Simplify double negatives in SIM103 (#11684)
• Ensure the expression generator adds a newline before type statements (#11720)
• Respect per-file ignores for blanket and redirected noqa rules (#11728)

Contributors

• @AlexWaygood
• @MichaReiser
• @MichaelOultram-pexip
• @ajesipow
• @carljm
• @charliermarsh
• @dhruvmanila
• @github-actions
• @mtsokol
• @renovate
• @snowsignal
• @tobb10001
• @tusharsadhwani