Ruff Files

Release Notes

Released on 2026-01-22.

Preview features

• Preserve required parentheses in lambda bodies (#22747)
• Combine range suppression code diagnostics (#22613)
• [airflow] Second positional argument to Asset/Dataset should not be a dictionary (AIR303) (#22453)
• [ruff] Detect duplicate entries in __all__ (RUF068) (#22114)

Bug fixes

• [pyupgrade] Allow shadowing non-builtin bindings (UP029) (#22749)
• [pyupgrade] Apply UP045 to string arguments of typing.cast (#22320)
• [flake8-pie] Detect duplicated declared class fields in PIE794 (#22717)

Rule changes

• [flake8-pyi] Fix inconsistent handling of forward references for __new__, __enter__, __aenter__ in PYI034 (#22798)
• [flake8-pytest-style] Support check parameter in PT011 (#22725)
• [ruff] Add exception for ctypes.Structure._fields_ (RUF012) (#22559)
• Many fixes are now marked unsafe if they would remove comments:
  • [flake8-bugbear] B009, B010, B013, B014, B033
  • [flake8-simplify] SIM910, SIM911
  • [pyupgrade] UP007, UP039, UP041, UP045
  • [refurb] FURB105, FURB116, FURB136, FURB140, FURB145, FURB154, FURB157, FURB164,FURB181, FURB188
  • [ruff] RUF019, RUF020

Documentation

• Add --exit-non-zero-on-format to formatter exit codes section (#22761)
• Update contributing guide for adding a new rule (#22779)
• [FastAPI] Document fix safety for FAST001 (#22655)
• [flake8-async] Tweak explanation to focus on latency/efficiency tradeoff (ASYNC110) (#22715)
• [pandas-vet] Make example error out-of-the-box (PD002) (#22561)
• [refurb] Make the example work out of box (FURB101) (#22770)
• [refurb] Make the example work out of box (FURB103) (#22769)

Contributors

• @alejsdev
• @ntBre
• @caiquejjx
• @chirizxc
• @denyszhak
• @sjyangkevin
• @MeGaGiGaGon
• @leandrobbraga
• @MichaReiser
• @carljm
• @amyreese
• @zsol
• @harupy

Install ruff 0.14.14

Install prebuilt binaries via shell script

:::sh
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.14.14/ruff-installer.sh | sh

Install prebuilt binaries via powershell script

:::sh
powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ruff/releases/download/0.14.14/ruff-installer.ps1 | iex"

Download ruff 0.14.14