ruff 0.16.7

on Python PyPI

Release Notes

Released on 2026-09-10.

Preview features

• [ruff] Add rule for default values on method receivers (RUF077) (#26700)
• [ruff] Recognize re.prefixmatch (RUF039, RUF055) (#28311)

Bug fixes

• Alternate nested quotes inside format spec interpolations (#28259)
• [flake8-implicit-str-concat] Mark fix unsafe when it creates a docstring (ISC003) (#27981)
• [flake8-tidy-imports] Skip fixes for multi-member imports (TID254) (#26584)
• [pylint] Gate ImportCycleError on Python 3.15 (PLW0133) (#28310)

Rule changes

• Correct D211 and D203 rule conflict diagnostic (#28444)
• Recognize slice and frozendict generics (#28477)
• Stop defining __cached__ for Python 3.15 (#28476)
• [pyupgrade] Stop recommending removed typing.no_type_check_decorator (UP035) (#28475)

Performance

• Reuse parser name lookups when interning (#28399)
• Speed up inherited configuration resolution (#28299)

Documentation

• Fix line-length path in --config example (#28392)
• Remove the "Who’s Using Ruff?" list (#28455)

Other changes

• Embed archive checksums in the shell installer (#28281)

Contributors

• @The-Compiler
• @mdiniz97
• @zsol
• @gorewilliams
• @RafaelJohn9
• @qatcod
• @zanieb
• @MichaReiser
• @ntBre
• @charliermarsh
• @nightt5879
• @jonathandung
• @jogo-openai

Install ruff 0.16.7

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.16.7/ruff-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ruff/releases/download/0.16.7/ruff-installer.ps1 | iex"

Download ruff 0.16.7

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>