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@github-actions github-actions released this 18 Jun 18:26
Immutable release. Only release title and notes can be modified.
0.15.18
6686f63
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Release Notes

Released on 2026-06-18.

Preview features

  • Handle nested ruff:ignore comments (#25791)
  • Stop displaying severity in output (#26050)
  • Use human-readable names in CLI output (#25937)
  • Use human-readable names in LSP and playground diagnostics (#26058)
  • [pydocstyle] Prevent property docstrings starting with verbs (D421) (#23775)
  • [flake8-pyi] Extend PYI033 to Python files (#26129)

Bug fixes

  • Detect equivalent numeric mapping keys (#26009)
  • Detect mapping keys equivalent to booleans (#25982)
  • Detect repeated signed and complex dictionary keys (#26007)

Rule changes

  • [flake8-pyi] Rename PYI033 to legacy-type-comment (#26131)

Performance

  • Use ThinVec for call keywords (#25999)
  • Inline parser recovery context checks (#26038)
  • Match parser keywords as bytes (#26037)
  • Move value parsing out of lexing (#25360)

Server

  • Render subdiagnostics and secondary annotations as related information (#26011)

Documentation

  • Update fix availability for always-fixable rules (#26091)
  • [flake8-tidy-imports] Add fix safety section (TID252) (#17491)

Parser

  • Reject __debug__ lambda parameters (#26022)
  • Reject _ as a match-pattern target (#25977)
  • Reject multiple starred names in sequence patterns (#25976)
  • Reject parenthesized star imports (#26021)
  • Reject starred comprehension targets (#26023)
  • Reject unparenthesized generator expressions in class bases (#25978)
  • Reject yield expressions after commas (#26024)
  • Validate function type parameter default order (#25981)

Playground

  • Make diagnostic links clickable (#26104)
  • Use diagnostic tags (#26105)

Contributors

Install ruff 0.15.18

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.15.18/ruff-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ruff/releases/download/0.15.18/ruff-installer.ps1 | iex"

Download ruff 0.15.18

File Platform Checksum
ruff-aarch64-apple-darwin.tar.gz Apple Silicon macOS checksum
ruff-x86_64-apple-darwin.tar.gz Intel macOS checksum
ruff-aarch64-pc-windows-msvc.zip ARM64 Windows checksum
ruff-i686-pc-windows-msvc.zip x86 Windows checksum
ruff-x86_64-pc-windows-msvc.zip x64 Windows checksum
ruff-aarch64-unknown-linux-gnu.tar.gz ARM64 Linux checksum
ruff-i686-unknown-linux-gnu.tar.gz x86 Linux checksum
ruff-powerpc64-unknown-linux-gnu.tar.gz PPC64 Linux checksum
ruff-powerpc64le-unknown-linux-gnu.tar.gz PPC64LE Linux checksum
ruff-riscv64gc-unknown-linux-gnu.tar.gz RISCV Linux checksum
ruff-s390x-unknown-linux-gnu.tar.gz S390x Linux checksum
ruff-x86_64-unknown-linux-gnu.tar.gz x64 Linux checksum
ruff-armv7-unknown-linux-gnueabihf.tar.gz ARMv7 Linux checksum
ruff-aarch64-unknown-linux-musl.tar.gz ARM64 MUSL Linux checksum
ruff-i686-unknown-linux-musl.tar.gz x86 MUSL Linux checksum
ruff-x86_64-unknown-linux-musl.tar.gz x64 MUSL Linux checksum
ruff-arm-unknown-linux-musleabihf.tar.gz ARMv6 MUSL Linux (Hardfloat) checksum
ruff-armv7-unknown-linux-musleabihf.tar.gz ARMv7 MUSL Linux checksum

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>
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