ruff 0.15.5

on Python PyPI

Release Notes

Released on 2026-03-05.

Preview features

• Discover Markdown files by default in preview mode (#23434)
• [perflint] Extend PERF102 to comprehensions and generators (#23473)
• [refurb] Fix FURB101 and FURB103 false positives when I/O variable is used later (#23542)
• [ruff] Add fix for none-not-at-end-of-union (RUF036) (#22829)
• [ruff] Fix false positive for re.split with empty string pattern (RUF055) (#23634)

Bug fixes

• [fastapi] Handle callable class dependencies with __call__ method (FAST003) (#23553)
• [pydocstyle] Fix numpy section ordering (D420) (#23685)
• [pyflakes] Fix false positive for names shadowing re-exports (F811) (#23356)
• [pyupgrade] Avoid inserting redundant None elements in UP045 (#23459)

Documentation

• Document extension mapping for Markdown code formatting (#23574)
• Update default Python version examples (#23605)

Other changes

• Publish releases to Astral mirror (#23616)

Contributors

• @amyreese
• @stakeswky
• @chirizxc
• @anishgirianish
• @bxff
• @zsol
• @charliermarsh
• @ntBre
• @kar-ganap

Install ruff 0.15.5

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.15.5/ruff-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ruff/releases/download/0.15.5/ruff-installer.ps1 | iex"

Download ruff 0.15.5

Verifying GitHub Artifact Attestations

The artifacts in this release have attestations generated with GitHub Artifact Attestations. These can be verified by using the GitHub CLI:

gh attestation verify <file-path of downloaded artifact> --repo astral-sh/ruff

You can also download the attestation from GitHub and verify against that directly:

gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation>