0.16.3
refactoringhq/tolaria0.16.3Aug 13, 2026by github-actions[bot]
AI Summary
Emphasizes performance improvements through Profile-Guided Optimization (PGO) and various bug fixes for flake8-bandit and pylint, including handling of negative numbers and string formatting.
Key Highlights
- Enable PGO for Linux x86-64, ARM64, Windows x86-64, and macOS ARM64
- Fix false negatives on negative numbers in pylint
- Hyperlink rule codes in ruff check --statistics output
- Reduce Expr size to 64 bytes
New Features
- Profile-Guided Optimization (PGO)
- Hyperlinked rule codes in CLI
Full Release Notes
## Release Notes Released on 2026-08-13. ### Preview features - \[`pylint`\] Fix false negatives on negative numbers (`PLR6104`) ([#27251](https://github.com/astral-sh/ruff/pull/27251)) - \[`pyupgrade`\] Add rule to replace `while 1` with `while True` (`UP048`) ([#27190](https://github.com/astral-sh/ruff/pull/27190)) ### Bug fixes - \[`flake8-bandit`\] Also check keyword arguments (`S602`, `S603`, `S607`, `S609`) ([#27687](https://github.com/astral-sh/ruff/pull/27687)) - \[`pylint`\] Allow `continue` in `finally` on Python 3.8 ([#27626](https://github.com/astral-sh/ruff/pull/27626)) - \[`pylint`\] Fix `PLE1307` false positive with bools ([#27651](https://github.com/astral-sh/ruff/pull/27651)) - \[`pylint`\] Fix false positives and negatives with `%b` format character (`PLE1300`, `PLE1307`) ([#27560](https://github.com/astral-sh/ruff/pull/27560)) - \[`pylint`\] Improve handling of concatenated strings (`PLE1300`) ([#27659](https://github.com/astral-sh/ruff/pull/27659)) ### Rule changes - \[`numpy`\] Make `np.chararray` autofix backwards-compatible (`NPY201`) ([#27527](https://github.com/astral-sh/ruff/pull/27527)) ### Performance - Enable PGO for Linux x86-64 Ruff releases ([#27570](https://github.com/astral-sh/ruff/pull/27570)) - Enable PGO for Linux ARM64 Ruff releases ([#27574](https://github.com/astral-sh/ruff/pull/27574)) - Enable PGO for Windows x86-64 Ruff releases ([#27573](https://github.com/astral-sh/ruff/pull/27573)) - Enable PGO for macOS ARM64 Ruff releases ([#27572](https://github.com/astral-sh/ruff/pull/27572)) - Reduce `Expr` size to 64 bytes ([#27591](https://github.com/astral-sh/ruff/pull/27591)) ### CLI - Hyperlink rule codes in `ruff check --statistics` output ([#27646](https://github.com/astral-sh/ruff/pull/27646)) ### Documentation - \[`ruff`\] Also suggest `asyncio.TaskGroup` (`RUF006`) ([#27461](https://github.com/astral-sh/ruff/pull/27461)) ### Other changes - Use mimalloc v3 ([#27586](https://github.com/astral-sh/ruff/pull/27586)) ### Contributors - [@Andrej730](https://github.com/Andrej730) - [@alonfaraj](https://github.com/alonfaraj) - [@romero-deshaw](https://github.com/romero-deshaw) - [@Avasam](https://github.com/Avasam) - [@tjkuson](https://github.com/tjkuson) - [@charliermarsh](https://github.com/charliermarsh) - [@chirizxc](https://github.com/chirizxc) - [@saberoueslati](https://github.com/saberoueslati) - [@MichaReiser](https://github.com/MichaReiser) ## Install ruff 0.16.3 ### Install prebuilt binaries via shell script ```sh curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-installer.sh | sh ``` ### Install prebuilt binaries via powershell script ```sh powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-installer.ps1 | iex" ``` ## Download ruff 0.16.3 | File | Platform | Checksum | |--------|----------|----------| | [ruff-aarch64-apple-darwin.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-aarch64-apple-darwin.tar.gz.sha256) | | [ruff-x86_64-apple-darwin.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-x86_64-apple-darwin.tar.gz.sha256) | | [ruff-aarch64-pc-windows-msvc.zip](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-aarch64-pc-windows-msvc.zip.sha256) | | [ruff-i686-pc-windows-msvc.zip](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-i686-pc-windows-msvc.zip.sha256) | | [ruff-x86_64-pc-windows-msvc.zip](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-x86_64-pc-windows-msvc.zip.sha256) | | [ruff-aarch64-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-aarch64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-i686-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-i686-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-powerpc64-unknown-linux-gnu.tar.gz) | PPC64 Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-powerpc64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64le-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-powerpc64le-unknown-linux-gnu.tar.gz.sha256) | | [ruff-riscv64gc-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-riscv64gc-unknown-linux-gnu.tar.gz.sha256) | | [ruff-s390x-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-s390x-unknown-linux-gnu.tar.gz.sha256) | | [ruff-x86_64-unknown-linux-gnu.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-x86_64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-armv7-unknown-linux-gnueabihf.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-armv7-unknown-linux-gnueabihf.tar.gz.sha256) | | [ruff-aarch64-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-aarch64-unknown-linux-musl.tar.gz.sha256) | | [ruff-i686-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-i686-unknown-linux-musl.tar.gz.sha256) | | [ruff-x86_64-unknown-linux-musl.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-x86_64-unknown-linux-musl.tar.gz.sha256) | | [ruff-arm-unknown-linux-musleabihf.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-arm-unknown-linux-musleabihf.tar.gz.sha256) | | [ruff-armv7-unknown-linux-musleabihf.tar.gz](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://releases.astral.sh/github/ruff/releases/download/0.16.3/ruff-armv7-unknown-linux-musleabihf.tar.gz.sha256) | ## 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](https://cli.github.com/manual/gh_attestation_verify): ```sh gh attestation verify <file-path of downloaded artifact> --repo astral-sh/ruff ``` You can also download the attestation from [GitHub](https://github.com/astral-sh/ruff/attestations) and verify against that directly: ```sh gh attestation verify <file-path of downloaded artifact> --bundle <file-path of downloaded attestation> ```