Fix comment placement in lambda parameters by ntBre · Pull Request #21868 · astral-sh/ruff · GitHub

Summary

This PR makes two changes to comment placement in lambda parameters. First, we
now insert a line break if the first parameter has a leading comment:

# input
(
    lambda
    * # comment 2
    x:
    x
)

# main
(
    lambda # comment 2
    *x: x
)

# this PR
(
    lambda
	# comment 2
    *x: x
)

Note the missing space in the output from main. This case is currently unstable
on main. Also note that the new formatting is more consistent with our stable
formatting in cases where the lambda has its own dangling comment:

# input
(
    lambda # comment 1
    * # comment 2
    x:
    x
)

# output
(
    lambda  # comment 1
    # comment 2
    *x: x
)

and when a parameter without a comment precedes the split *x:

# input
(
    lambda y,
    * # comment 2
    x:
    x
)

# output
(
    lambda y,
    # comment 2
    *x: x
)

This does change the stable formatting, but I think such cases are rare (expecting zero hits in the ecosystem report), this fixes an existing instability, and it should not change any code we've previously formatted.

Second, this PR modifies the comment placement such that # comment 2 in these
outputs is still a leading comment on the parameter. This is also not the case
on main, where it becomes a dangling lambda comment. This doesn't cause any
instability that I'm aware of on main, but it does cause problems when trying to
adjust the placement of dangling lambda comments in #21385. Changing the
placement in this way should not affect any formatting here.

Test Plan

New lambda tests, plus existing tests covering the cases above with multiple
comments around the parameters (see lambda.py 122-143, and 122-205 or so more
broadly)

I also checked manually that the comments are now leading on the parameter:

❯ cargo run --bin ruff_python_formatter -- --emit stdout --target-version 3.10 --print-comments <<EOF
(
    lambda
        # comment 2
    *x: x
)
EOF
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
     Running `target/debug/ruff_python_formatter --emit stdout --target-version 3.10 --print-comments`
# Comment decoration: Range, Preceding, Following, Enclosing, Comment
21..32, None, Some((Parameters, 37..39)), (ExprLambda, 6..42), "# comment 2"
{
    Node {
        kind: Parameter,
        range: 37..39,
        source: `*x`,
    }: {
        "leading": [
            SourceComment {
                text: "# comment 2",
                position: OwnLine,
                formatted: true,
            },
        ],
        "dangling": [],
        "trailing": [],
    },
}
(
    lambda
    # comment 2
    *x: x
)

But I didn't see a great place to put a test like this. Is there somewhere I can assert this comment placement since it doesn't affect any formatting yet? Or is it okay to wait until we use this in #21385?

Summary -- This PR makes two changes to comment placement in lambda paramters. First, we now insert a line break if the first parameter has a leading comment: ```py ( lambda * # comment 2 x: x ) ( lambda # comment 2 *x: x ) ( lambda # comment 2 *x: x ) ``` Note the missing space in the output from main. This case is currently unstable on main. Also note that the new formatting is more consistent with our stable formatting in cases where the lambda has its own dangling comment: ```py ( lambda # comment 1 * # comment 2 x: x ) ( lambda # comment 1 # comment 2 *x: x ) ``` and when a parameter without a comment precedes the split `*x`: ```py ( lambda y, * # comment 2 x: x ) ( lambda y, # comment 2 *x: x ) ``` Second, this PR modifies the comment placement such that `# comment 2` in these outputs is still a leading comment on the parameter. This is also not the case on main, where it becomes a dangling lambda comment. This doesn't cause any instability that I'm aware of on main, but it does cause problems when trying to adjust the placement of dangling lambda comments in #21385. Changing the placement in this way should not affect the formatting here. Test Plan -- New lambda tests, plus existing tests covering the cases above with multiple comments around the parameters (see lambda.py 122-143, and 122-205 or so more broadly)

the first of these is unstable because it formats as: ```py ( lambda # comment 2 *x: x ) ``` without the second space before the comment. As a leading comment on the `*x` parameter, it should instead format like: ```py ( lambda # comment 2 *x: x ) ``` which is also consistent with its formatting in the presence of an additional dangling comment on the lambda itself. this is the second test case added here, which formats (stably) as: ```py ( lambda # comment 1 # comment 2 *x: x ) ```

ruff-ecosystem results

Formatter (stable)

✅ ecosystem check detected no format changes.

Formatter (preview)

✅ ecosystem check detected no format changes.

…21879) ## Summary This is a follow-up to #21868. As soon as I started merging #21868 into #21385, I realized that I had missed a test case with `**kwargs` after the `*args` parameter. Such a case is supposed to be formatted on one line like: ```py # input ( lambda # comment *x, **y: x ) # output ( lambda # comment *x, **y: x ) ``` which you can still see on the [playground](https://play.ruff.rs/bd88d339-1358-40d2-819f-865bfcb23aef?secondary=Format), but on `main` after #21868, this was formatted as: ```py ( lambda # comment *x, **y: x ) ``` because the leading comment on the first parameter caused the whole group around the parameters to break. Instead of making these comments leading comments on the first parameter, this PR makes them leading comments on the parameters list as a whole. ## Test Plan New tests, and I will also try merging this into #21385 _before_ opening it for review this time. <hr> (labeling `internal` since #21868 should not be released before some kind of fix)

* origin/main: (33 commits) [ty] Simplify union lower bounds and intersection upper bounds in constraint sets (#21871) [ty] Collapse `never` paths in constraint set BDDs (#21880) Fix leading comment formatting for lambdas with multiple parameters (#21879) [ty] Type inference for `@asynccontextmanager` (#21876) Fix comment placement in lambda parameters (#21868) [`pylint`] Detect subclasses of builtin exceptions (`PLW0133`) (#21382) Fix stack overflow with recursive generic protocols (depth limit) (#21858) New diagnostics for unused range suppressions (#21783) [ty] Use default settings in completion tests [ty] Infer type variables within generic unions (#21862) [ty] Fix overload filtering to prefer more "precise" match (#21859) [ty] Stabilize auto-import [ty] Fix reveal-type E2E test (#21865) [ty] Use concise message for LSP clients not supporting related diagnostic information (#21850) Include more details in Tokens 'offset is inside token' panic message (#21860) apply range suppressions to filter diagnostics (#21623) [ty] followup: add-import action for `reveal_type` too (#21668) [ty] Enrich function argument auto-complete suggestions with annotated types [ty] Add autocomplete suggestions for function arguments [`flake8-bugbear`] Accept immutable slice default arguments (`B008`) (#21823) ...

Note this update introcudes the new warning ISC004, which requires some fixes in our code. Released on 2026-01-22. - Preserve required parentheses in lambda bodies ([#22747](https://github.com/astral-sh/ruff/pull/22747)) - Combine range suppression code diagnostics ([#22613](https://github.com/astral-sh/ruff/pull/22613)) - \[`airflow`] Second positional argument to `Asset`/`Dataset` should not be a dictionary (`AIR303`) ([#22453](https://github.com/astral-sh/ruff/pull/22453)) - \[`ruff`] Detect duplicate entries in `__all__` (`RUF068`) ([#22114](https://github.com/astral-sh/ruff/pull/22114)) - \[`pyupgrade`] Allow shadowing non-builtin bindings (`UP029`) ([#22749](https://github.com/astral-sh/ruff/pull/22749)) - \[`pyupgrade`] Apply `UP045` to string arguments of `typing.cast` ([#22320](https://github.com/astral-sh/ruff/pull/22320)) - \[`flake8-pie`] Detect duplicated declared class fields in `PIE794` ([#22717](https://github.com/astral-sh/ruff/pull/22717)) - \[`flake8-pyi`] Fix inconsistent handling of forward references for `__new__`, `__enter__`, `__aenter__` in `PYI034` ([#22798](https://github.com/astral-sh/ruff/pull/22798)) - \[`flake8-pytest-style`] Support `check` parameter in `PT011` ([#22725](https://github.com/astral-sh/ruff/pull/22725)) - \[`ruff`] Add exception for `ctypes.Structure._fields_` (`RUF012`) ([#22559](https://github.com/astral-sh/ruff/pull/22559)) - Many fixes are now marked unsafe if they would remove comments: - \[`flake8-bugbear`] [`B009`](https://github.com/astral-sh/ruff/pull/22656), [`B010`](https://github.com/astral-sh/ruff/pull/22657), [`B013`](https://github.com/astral-sh/ruff/pull/22658), [`B014`](https://github.com/astral-sh/ruff/pull/22659), [`B033`](https://github.com/astral-sh/ruff/pull/22632) - \[`flake8-simplify`] [`SIM910`](https://github.com/astral-sh/ruff/pull/22662), [`SIM911`](https://github.com/astral-sh/ruff/pull/22661) - \[`pyupgrade`] [`UP007`](https://github.com/astral-sh/ruff/pull/22772), [`UP039`](https://github.com/astral-sh/ruff/pull/22774), [`UP041`](https://github.com/astral-sh/ruff/pull/22773), [`UP045`](https://github.com/astral-sh/ruff/pull/22772) - \[`refurb`] [`FURB105`](https://github.com/astral-sh/ruff/pull/22767), [`FURB116`](https://github.com/astral-sh/ruff/pull/22681), [`FURB136`](https://github.com/astral-sh/ruff/pull/22680), [`FURB140`](https://github.com/astral-sh/ruff/pull/22679), [`FURB145`](https://github.com/astral-sh/ruff/pull/22670), [`FURB154`](https://github.com/astral-sh/ruff/pull/22669), [`FURB157`](https://github.com/astral-sh/ruff/pull/22668), [`FURB164`](https://github.com/astral-sh/ruff/pull/22667),[`FURB181`](https://github.com/astral-sh/ruff/pull/22666), [`FURB188`](https://github.com/astral-sh/ruff/pull/22665) - \[`ruff`] [`RUF019`](https://github.com/astral-sh/ruff/pull/22663), [`RUF020`](https://github.com/astral-sh/ruff/pull/22664) - Add `--exit-non-zero-on-format` to formatter exit codes section ([#22761](https://github.com/astral-sh/ruff/pull/22761)) - Update contributing guide for adding a new rule ([#22779](https://github.com/astral-sh/ruff/pull/22779)) - \[`FastAPI`] Document fix safety for `FAST001` ([#22655](https://github.com/astral-sh/ruff/pull/22655)) - \[`flake8-async`] Tweak explanation to focus on latency/efficiency tradeoff (`ASYNC110`) ([#22715](https://github.com/astral-sh/ruff/pull/22715)) - \[`pandas-vet`] Make example error out-of-the-box (`PD002`) ([#22561](https://github.com/astral-sh/ruff/pull/22561)) - \[`refurb`] Make the example work out of box (`FURB101`) ([#22770](https://github.com/astral-sh/ruff/pull/22770)) - \[`refurb`] Make the example work out of box (`FURB103`) ([#22769](https://github.com/astral-sh/ruff/pull/22769)) - [@alejsdev](https://github.com/alejsdev) - [@ntBre](https://github.com/ntBre) - [@caiquejjx](https://github.com/caiquejjx) - [@chirizxc](https://github.com/chirizxc) - [@denyszhak](https://github.com/denyszhak) - [@sjyangkevin](https://github.com/sjyangkevin) - [@MeGaGiGaGon](https://github.com/MeGaGiGaGon) - 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Released on 2026-01-15. This is a follow-up release to 0.14.12. Because of an issue publishing the WASM packages, there is no GitHub release or Git tag for 0.14.12, although the package was published to PyPI. The contents of the 0.14.13 release are identical to 0.14.12. - \[`flake8-blind-except`] Allow more logging methods (`BLE001`) ([#22057](https://github.com/astral-sh/ruff/pull/22057)) - \[`ruff`] Respect `lint.pydocstyle.property-decorators` in `RUF066` ([#22515](https://github.com/astral-sh/ruff/pull/22515)) - Fix configuration path in `--show-settings` ([#22478](https://github.com/astral-sh/ruff/pull/22478)) - Respect `fmt: skip` for multiple statements on the same logical line ([#22119](https://github.com/astral-sh/ruff/pull/22119)) - \[`pydocstyle`] Update Rust crate imperative to v1.0.7 (`D401`) ([#22519](https://github.com/astral-sh/ruff/pull/22519)) - \[`isort`] Insert imports in alphabetical order (`I002`) ([#22493](https://github.com/astral-sh/ruff/pull/22493)) - Add llms.txt support for documentation ([#22463](https://github.com/astral-sh/ruff/pull/22463)) - Use prek in documentation and CI ([#22505](https://github.com/astral-sh/ruff/pull/22505)) - \[`flake8-pytest-style`] Add `check` parameter example to `PT017` docs ([#22546](https://github.com/astral-sh/ruff/pull/22546)) - \[`ruff`] Make example error out-of-the-box (`RUF103`) ([#22558](https://github.com/astral-sh/ruff/pull/22558)) - \[`ruff`] document `RUF100` trailing comment fix behavior ([#22479](https://github.com/astral-sh/ruff/pull/22479)) - wasm: Require explicit logging initialization ([#22587](https://github.com/astral-sh/ruff/pull/22587)) - [@terror](https://github.com/terror) - [@harupy](https://github.com/harupy) - [@Jkhall81](https://github.com/Jkhall81) - [@dhruvmanila](https://github.com/dhruvmanila) - [@lubaskinc0de](https://github.com/lubaskinc0de) - [@zanieb](https://github.com/zanieb) - [@MeGaGiGaGon](https://github.com/MeGaGiGaGon) - [@charliermarsh](https://github.com/charliermarsh) - [@renovate](https://github.com/renovate) - [@dylwil3](https://github.com/dylwil3) - [@MichaReiser](https://github.com/MichaReiser) - [@11happy](https://github.com/11happy) ```sh curl --proto 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[ruff-aarch64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-aarch64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-i686-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-i686-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-powerpc64-unknown-linux-gnu.tar.gz) | PPC64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-powerpc64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64le-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-powerpc64le-unknown-linux-gnu.tar.gz.sha256) | | [ruff-riscv64gc-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-riscv64gc-unknown-linux-gnu.tar.gz.sha256) | | [ruff-s390x-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-s390x-unknown-linux-gnu.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-x86_64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-armv7-unknown-linux-gnueabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-armv7-unknown-linux-gnueabihf.tar.gz.sha256) | | [ruff-aarch64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-aarch64-unknown-linux-musl.tar.gz.sha256) | | [ruff-i686-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-i686-unknown-linux-musl.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-x86_64-unknown-linux-musl.tar.gz.sha256) | | [ruff-arm-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-arm-unknown-linux-musleabihf.tar.gz.sha256) | | [ruff-armv7-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.13/ruff-armv7-unknown-linux-musleabihf.tar.gz.sha256) | Released on 2026-01-08. - Consolidate diagnostics for matched disable/enable suppression comments ([#22099](https://github.com/astral-sh/ruff/pull/22099)) - Report diagnostics for invalid/unmatched range suppression comments ([#21908](https://github.com/astral-sh/ruff/pull/21908)) - \[`airflow`] Passing positional argument into `airflow.lineage.hook.HookLineageCollector.create_asset` is not allowed (`AIR303`) ([#22046](https://github.com/astral-sh/ruff/pull/22046)) - \[`refurb`] Mark `FURB192` fix as always unsafe ([#22210](https://github.com/astral-sh/ruff/pull/22210)) - \[`ruff`] Add `non-empty-init-module` (`RUF067`) ([#22143](https://github.com/astral-sh/ruff/pull/22143)) - Fix GitHub format for multi-line diagnostics ([#22108](https://github.com/astral-sh/ruff/pull/22108)) - \[`flake8-unused-arguments`] Mark `**kwargs` in `TypeVar` as used (`ARG001`) ([#22214](https://github.com/astral-sh/ruff/pull/22214)) - Add `help:` subdiagnostics for several Ruff rules that can sometimes appear to disagree with `ty` ([#22331](https://github.com/astral-sh/ruff/pull/22331)) - \[`pylint`] Demote `PLW1510` fix to display-only ([#22318](https://github.com/astral-sh/ruff/pull/22318)) - \[`pylint`] Ignore identical members (`PLR1714`) ([#22220](https://github.com/astral-sh/ruff/pull/22220)) - \[`pylint`] Improve diagnostic range for `PLC0206` ([#22312](https://github.com/astral-sh/ruff/pull/22312)) - \[`ruff`] Improve fix title for `RUF102` invalid rule code ([#22100](https://github.com/astral-sh/ruff/pull/22100)) - \[`flake8-simplify`]: Avoid unnecessary builtins import for `SIM105` ([#22358](https://github.com/astral-sh/ruff/pull/22358)) - Allow Python 3.15 as valid `target-version` value in preview ([#22419](https://github.com/astral-sh/ruff/pull/22419)) - Check `required-version` before parsing rules ([#22410](https://github.com/astral-sh/ruff/pull/22410)) - Include configured `src` directories when resolving graphs ([#22451](https://github.com/astral-sh/ruff/pull/22451)) - Update `T201` suggestion to not use root logger to satisfy `LOG015` ([#22059](https://github.com/astral-sh/ruff/pull/22059)) - Fix `iter` example in unsafe fixes doc ([#22118](https://github.com/astral-sh/ruff/pull/22118)) - \[`flake8_print`] better suggestion for `basicConfig` in `T201` docs ([#22101](https://github.com/astral-sh/ruff/pull/22101)) - \[`pylint`] Restore the fix safety docs for `PLW0133` ([#22211](https://github.com/astral-sh/ruff/pull/22211)) - Fix Jupyter notebook discovery info for editors ([#22447](https://github.com/astral-sh/ruff/pull/22447)) - [@charliermarsh](https://github.com/charliermarsh) - [@ntBre](https://github.com/ntBre) - [@cenviity](https://github.com/cenviity) - [@njhearp](https://github.com/njhearp) - [@cbachhuber](https://github.com/cbachhuber) - [@jelle-openai](https://github.com/jelle-openai) - [@AlexWaygood](https://github.com/AlexWaygood) - [@ValdonVitija](https://github.com/ValdonVitija) - [@BurntSushi](https://github.com/BurntSushi) - [@Jkhall81](https://github.com/Jkhall81) - [@PeterJCLaw](https://github.com/PeterJCLaw) - [@harupy](https://github.com/harupy) - [@amyreese](https://github.com/amyreese) - [@sjyangkevin](https://github.com/sjyangkevin) - [@woodruffw](https://github.com/woodruffw) ```sh curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-installer.sh | sh ``` ```sh powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-installer.ps1 | iex" ``` | File | Platform | Checksum | | ---------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------- | | [ruff-aarch64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-aarch64-apple-darwin.tar.gz.sha256) | | [ruff-x86\_64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-x86_64-apple-darwin.tar.gz.sha256) | | [ruff-aarch64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-aarch64-pc-windows-msvc.zip.sha256) | | [ruff-i686-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-i686-pc-windows-msvc.zip.sha256) | | [ruff-x86\_64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-x86_64-pc-windows-msvc.zip.sha256) | | [ruff-aarch64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-aarch64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-i686-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-i686-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-powerpc64-unknown-linux-gnu.tar.gz) | PPC64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-powerpc64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64le-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-powerpc64le-unknown-linux-gnu.tar.gz.sha256) | | [ruff-riscv64gc-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-riscv64gc-unknown-linux-gnu.tar.gz.sha256) | | [ruff-s390x-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-s390x-unknown-linux-gnu.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-x86_64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-armv7-unknown-linux-gnueabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-armv7-unknown-linux-gnueabihf.tar.gz.sha256) | | [ruff-aarch64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-aarch64-unknown-linux-musl.tar.gz.sha256) | | [ruff-i686-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-i686-unknown-linux-musl.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-x86_64-unknown-linux-musl.tar.gz.sha256) | | [ruff-arm-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-arm-unknown-linux-musleabihf.tar.gz.sha256) | | [ruff-armv7-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.11/ruff-armv7-unknown-linux-musleabihf.tar.gz.sha256) | Released on 2025-12-18. - \[formatter] Fluent formatting of method chains ([#21369](https://github.com/astral-sh/ruff/pull/21369)) - \[formatter] Keep lambda parameters on one line and parenthesize the body if it expands ([#21385](https://github.com/astral-sh/ruff/pull/21385)) - \[`flake8-implicit-str-concat`] New rule to prevent implicit string concatenation in collections (`ISC004`) ([#21972](https://github.com/astral-sh/ruff/pull/21972)) - \[`flake8-use-pathlib`] Make fixes unsafe when types change in compound statements (`PTH104`, `PTH105`, `PTH109`, `PTH115`) ([#22009](https://github.com/astral-sh/ruff/pull/22009)) - \[`refurb`] Extend support for `Path.open` (`FURB101`, `FURB103`) ([#21080](https://github.com/astral-sh/ruff/pull/21080)) - \[`pyupgrade`] Fix parsing named Unicode escape sequences (`UP032`) ([#21901](https://github.com/astral-sh/ruff/pull/21901)) - \[`eradicate`] Ignore `ruff:disable` and `ruff:enable` comments in `ERA001` ([#22038](https://github.com/astral-sh/ruff/pull/22038)) - \[`flake8-pytest-style`] Allow `match` and `check` keyword arguments without an expected exception type (`PT010`) ([#21964](https://github.com/astral-sh/ruff/pull/21964)) - \[syntax-errors] Annotated name cannot be global ([#20868](https://github.com/astral-sh/ruff/pull/20868)) - Add `uv` and `ty` to the Ruff README ([#21996](https://github.com/astral-sh/ruff/pull/21996)) - Document known lambda formatting deviations from Black ([#21954](https://github.com/astral-sh/ruff/pull/21954)) - Update `setup.md` ([#22024](https://github.com/astral-sh/ruff/pull/22024)) - \[`flake8-bandit`] Fix broken link (`S704`) ([#22039](https://github.com/astral-sh/ruff/pull/22039)) - Fix playground Share button showing "Copied!" before clipboard copy completes ([#21942](https://github.com/astral-sh/ruff/pull/21942)) - [@dylwil3](https://github.com/dylwil3) - [@charliecloudberry](https://github.com/charliecloudberry) - [@charliermarsh](https://github.com/charliermarsh) - [@chirizxc](https://github.com/chirizxc) - [@ntBre](https://github.com/ntBre) - [@zanieb](https://github.com/zanieb) - [@amyreese](https://github.com/amyreese) - [@hauntsaninja](https://github.com/hauntsaninja) - [@11happy](https://github.com/11happy) - [@mahiro72](https://github.com/mahiro72) - [@MichaReiser](https://github.com/MichaReiser) - [@phongddo](https://github.com/phongddo) - [@PeterJCLaw](https://github.com/PeterJCLaw) ```sh curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-installer.sh | sh ``` ```sh powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-installer.ps1 | iex" ``` | File | Platform | Checksum | | ---------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------- | | [ruff-aarch64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-aarch64-apple-darwin.tar.gz.sha256) | | [ruff-x86\_64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-x86_64-apple-darwin.tar.gz.sha256) | | [ruff-aarch64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-aarch64-pc-windows-msvc.zip.sha256) | | [ruff-i686-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-i686-pc-windows-msvc.zip.sha256) | | [ruff-x86\_64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-x86_64-pc-windows-msvc.zip.sha256) | | [ruff-aarch64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-aarch64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-i686-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-i686-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-powerpc64-unknown-linux-gnu.tar.gz) | PPC64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-powerpc64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64le-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-powerpc64le-unknown-linux-gnu.tar.gz.sha256) | | [ruff-riscv64gc-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-riscv64gc-unknown-linux-gnu.tar.gz.sha256) | | [ruff-s390x-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-s390x-unknown-linux-gnu.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-x86_64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-armv7-unknown-linux-gnueabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-armv7-unknown-linux-gnueabihf.tar.gz.sha256) | | [ruff-aarch64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-aarch64-unknown-linux-musl.tar.gz.sha256) | | [ruff-i686-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-i686-unknown-linux-musl.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-x86_64-unknown-linux-musl.tar.gz.sha256) | | [ruff-arm-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-arm-unknown-linux-musleabihf.tar.gz.sha256) | | [ruff-armv7-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.10/ruff-armv7-unknown-linux-musleabihf.tar.gz.sha256) | Released on 2025-12-11. - \[`ruff`] New `RUF100` diagnostics for unused range suppressions ([#21783](https://github.com/astral-sh/ruff/pull/21783)) - \[`pylint`] Detect subclasses of builtin exceptions (`PLW0133`) ([#21382](https://github.com/astral-sh/ruff/pull/21382)) - Fix comment placement in lambda parameters ([#21868](https://github.com/astral-sh/ruff/pull/21868)) - Skip over trivia tokens after re-lexing ([#21895](https://github.com/astral-sh/ruff/pull/21895)) - \[`flake8-bandit`] Fix false positive when using non-standard `CSafeLoader` path (S506). ([#21830](https://github.com/astral-sh/ruff/pull/21830)) - \[`flake8-bugbear`] Accept immutable slice default arguments (`B008`) ([#21823](https://github.com/astral-sh/ruff/pull/21823)) - \[`pydocstyle`] Suppress `D417` for parameters with `Unpack` annotations ([#21816](https://github.com/astral-sh/ruff/pull/21816)) - Use `memchr` for computing line indexes ([#21838](https://github.com/astral-sh/ruff/pull/21838)) - Document `*.pyw` is included by default in preview ([#21885](https://github.com/astral-sh/ruff/pull/21885)) - Document range suppressions, reorganize suppression docs ([#21884](https://github.com/astral-sh/ruff/pull/21884)) - Update mkdocs-material to 9.7.0 (Insiders now free) ([#21797](https://github.com/astral-sh/ruff/pull/21797)) - [@Avasam](https://github.com/Avasam) - [@MichaReiser](https://github.com/MichaReiser) - [@charliermarsh](https://github.com/charliermarsh) - [@amyreese](https://github.com/amyreese) - [@phongddo](https://github.com/phongddo) - [@prakhar1144](https://github.com/prakhar1144) - [@mahiro72](https://github.com/mahiro72) - [@ntBre](https://github.com/ntBre) - [@LoicRiegel](https://github.com/LoicRiegel) ```sh curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-installer.sh | sh ``` ```sh powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-installer.ps1 | iex" ``` | File | Platform | Checksum | | --------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------ | | [ruff-aarch64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-aarch64-apple-darwin.tar.gz.sha256) | | [ruff-x86\_64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-x86_64-apple-darwin.tar.gz.sha256) | | [ruff-aarch64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-aarch64-pc-windows-msvc.zip.sha256) | | [ruff-i686-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-i686-pc-windows-msvc.zip.sha256) | | [ruff-x86\_64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-x86_64-pc-windows-msvc.zip.sha256) | | [ruff-aarch64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-aarch64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-i686-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-i686-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-powerpc64-unknown-linux-gnu.tar.gz) | PPC64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-powerpc64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64le-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-powerpc64le-unknown-linux-gnu.tar.gz.sha256) | | [ruff-riscv64gc-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-riscv64gc-unknown-linux-gnu.tar.gz.sha256) | | [ruff-s390x-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-s390x-unknown-linux-gnu.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-x86_64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-armv7-unknown-linux-gnueabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-armv7-unknown-linux-gnueabihf.tar.gz.sha256) | | [ruff-aarch64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-aarch64-unknown-linux-musl.tar.gz.sha256) | | [ruff-i686-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-i686-unknown-linux-musl.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-x86_64-unknown-linux-musl.tar.gz.sha256) | | [ruff-arm-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-arm-unknown-linux-musleabihf.tar.gz.sha256) | | [ruff-armv7-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.9/ruff-armv7-unknown-linux-musleabihf.tar.gz.sha256) | Released on 2025-12-04. - \[`flake8-bugbear`] Catch `yield` expressions within other statements (`B901`) ([#21200](https://github.com/astral-sh/ruff/pull/21200)) - \[`flake8-use-pathlib`] Mark fixes unsafe for return type changes (`PTH104`, `PTH105`, `PTH109`, `PTH115`) ([#21440](https://github.com/astral-sh/ruff/pull/21440)) - Fix syntax error false positives for `await` outside functions ([#21763](https://github.com/astral-sh/ruff/pull/21763)) - \[`flake8-simplify`] Fix truthiness assumption for non-iterable arguments in tuple/list/set calls (`SIM222`, `SIM223`) ([#21479](https://github.com/astral-sh/ruff/pull/21479)) - Suggest using `--output-file` option in GitLab integration ([#21706](https://github.com/astral-sh/ruff/pull/21706)) - \[syntax-error] Default type parameter followed by non-default type parameter ([#21657](https://github.com/astral-sh/ruff/pull/21657)) - [@kieran-ryan](https://github.com/kieran-ryan) - [@11happy](https://github.com/11happy) - [@danparizher](https://github.com/danparizher) - [@ntBre](https://github.com/ntBre) ```sh curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-installer.sh | sh ``` ```sh powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-installer.ps1 | iex" ``` | File | Platform | Checksum | | --------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------ | | [ruff-aarch64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-aarch64-apple-darwin.tar.gz.sha256) | | [ruff-x86\_64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-x86_64-apple-darwin.tar.gz.sha256) | | [ruff-aarch64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-aarch64-pc-windows-msvc.zip.sha256) | | [ruff-i686-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-i686-pc-windows-msvc.zip.sha256) | | [ruff-x86\_64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-x86_64-pc-windows-msvc.zip.sha256) | | [ruff-aarch64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-aarch64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-i686-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-i686-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-powerpc64-unknown-linux-gnu.tar.gz) | PPC64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-powerpc64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64le-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-powerpc64le-unknown-linux-gnu.tar.gz.sha256) | | [ruff-riscv64gc-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-riscv64gc-unknown-linux-gnu.tar.gz.sha256) | | [ruff-s390x-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-s390x-unknown-linux-gnu.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-x86_64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-armv7-unknown-linux-gnueabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-armv7-unknown-linux-gnueabihf.tar.gz.sha256) | | [ruff-aarch64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-aarch64-unknown-linux-musl.tar.gz.sha256) | | [ruff-i686-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-i686-unknown-linux-musl.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-x86_64-unknown-linux-musl.tar.gz.sha256) | | [ruff-arm-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-arm-unknown-linux-musleabihf.tar.gz.sha256) | | [ruff-armv7-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.8/ruff-armv7-unknown-linux-musleabihf.tar.gz.sha256) | Released on 2025-11-28. - \[`flake8-bandit`] Handle string literal bindings in suspicious-url-open-usage (`S310`) ([#21469](https://github.com/astral-sh/ruff/pull/21469)) - \[`pylint`] Fix `PLR1708` false positives on nested functions ([#21177](https://github.com/astral-sh/ruff/pull/21177)) - \[`pylint`] Fix suppression for empty dict without tuple key annotation (`PLE1141`) ([#21290](https://github.com/astral-sh/ruff/pull/21290)) - \[`ruff`] Add rule `RUF066` to detect unnecessary class properties ([#21535](https://github.com/astral-sh/ruff/pull/21535)) - \[`ruff`] Catch more dummy variable uses (`RUF052`) ([#19799](https://github.com/astral-sh/ruff/pull/19799)) - \[server] Set severity for non-rule diagnostics ([#21559](https://github.com/astral-sh/ruff/pull/21559)) - \[`flake8-implicit-str-concat`] Avoid invalid fix in (`ISC003`) ([#21517](https://github.com/astral-sh/ruff/pull/21517)) - \[`parser`] Fix panic when parsing IPython escape command expressions ([#21480](https://github.com/astral-sh/ruff/pull/21480)) - Show partial fixability indicator in statistics output ([#21513](https://github.com/astral-sh/ruff/pull/21513)) - [@mikeleppane](https://github.com/mikeleppane) - [@senekor](https://github.com/senekor) - [@ShaharNaveh](https://github.com/ShaharNaveh) - [@JumboBear](https://github.com/JumboBear) - [@prakhar1144](https://github.com/prakhar1144) - [@tsvikas](https://github.com/tsvikas) - [@danparizher](https://github.com/danparizher) - [@chirizxc](https://github.com/chirizxc) - [@AlexWaygood](https://github.com/AlexWaygood) - [@MichaReiser](https://github.com/MichaReiser) ```sh curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-installer.sh | sh ``` ```sh powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-installer.ps1 | iex" ``` | File | Platform | Checksum | | --------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------ | | [ruff-aarch64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-aarch64-apple-darwin.tar.gz.sha256) | | [ruff-x86\_64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-x86_64-apple-darwin.tar.gz.sha256) | | [ruff-aarch64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-aarch64-pc-windows-msvc.zip.sha256) | | [ruff-i686-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-i686-pc-windows-msvc.zip.sha256) | | [ruff-x86\_64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-x86_64-pc-windows-msvc.zip.sha256) | | [ruff-aarch64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-aarch64-unknown-linux-gnu.tar.gz) | ARM64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-aarch64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-i686-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-i686-unknown-linux-gnu.tar.gz) | x86 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-i686-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-powerpc64-unknown-linux-gnu.tar.gz) | PPC64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-powerpc64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-powerpc64le-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-powerpc64le-unknown-linux-gnu.tar.gz) | PPC64LE Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-powerpc64le-unknown-linux-gnu.tar.gz.sha256) | | [ruff-riscv64gc-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-riscv64gc-unknown-linux-gnu.tar.gz) | RISCV Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-riscv64gc-unknown-linux-gnu.tar.gz.sha256) | | [ruff-s390x-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-s390x-unknown-linux-gnu.tar.gz) | S390x Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-s390x-unknown-linux-gnu.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-gnu.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-x86_64-unknown-linux-gnu.tar.gz) | x64 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-x86_64-unknown-linux-gnu.tar.gz.sha256) | | [ruff-armv7-unknown-linux-gnueabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-armv7-unknown-linux-gnueabihf.tar.gz) | ARMv7 Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-armv7-unknown-linux-gnueabihf.tar.gz.sha256) | | [ruff-aarch64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-aarch64-unknown-linux-musl.tar.gz.sha256) | | [ruff-i686-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-i686-unknown-linux-musl.tar.gz) | x86 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-i686-unknown-linux-musl.tar.gz.sha256) | | [ruff-x86\_64-unknown-linux-musl.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-x86_64-unknown-linux-musl.tar.gz.sha256) | | [ruff-arm-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-arm-unknown-linux-musleabihf.tar.gz) | ARMv6 MUSL Linux (Hardfloat) | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-arm-unknown-linux-musleabihf.tar.gz.sha256) | | [ruff-armv7-unknown-linux-musleabihf.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-armv7-unknown-linux-musleabihf.tar.gz) | ARMv7 MUSL Linux | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.7/ruff-armv7-unknown-linux-musleabihf.tar.gz.sha256) | Released on 2025-11-21. - \[`flake8-bandit`] Support new PySNMP API paths (`S508`, `S509`) ([#21374](https://github.com/astral-sh/ruff/pull/21374)) - Adjust own-line comment placement between branches ([#21185](https://github.com/astral-sh/ruff/pull/21185)) - Avoid syntax error when formatting attribute expressions with outer parentheses, parenthesized value, and trailing comment on value ([#20418](https://github.com/astral-sh/ruff/pull/20418)) - Fix panic when formatting comments in unary expressions ([#21501](https://github.com/astral-sh/ruff/pull/21501)) - Respect `fmt: skip` for compound statements on a single line ([#20633](https://github.com/astral-sh/ruff/pull/20633)) - \[`refurb`] Fix `FURB103` autofix ([#21454](https://github.com/astral-sh/ruff/pull/21454)) - \[`ruff`] Fix false positive for complex conversion specifiers in `logging-eager-conversion` (`RUF065`) ([#21464](https://github.com/astral-sh/ruff/pull/21464)) - \[`ruff`] Avoid false positive on `ClassVar` reassignment (`RUF012`) ([#21478](https://github.com/astral-sh/ruff/pull/21478)) - Render hyperlinks for lint errors ([#21514](https://github.com/astral-sh/ruff/pull/21514)) - Add a `ruff analyze` option to skip over imports in `TYPE_CHECKING` blocks ([#21472](https://github.com/astral-sh/ruff/pull/21472)) - Limit `eglot-format` hook to eglot-managed Python buffers ([#21459](https://github.com/astral-sh/ruff/pull/21459)) - Mention `force-exclude` in "Configuration > Python file discovery" ([#21500](https://github.com/astral-sh/ruff/pull/21500)) - [@ntBre](https://github.com/ntBre) - [@dylwil3](https://github.com/dylwil3) - [@gauthsvenkat](https://github.com/gauthsvenkat) - [@MichaReiser](https://github.com/MichaReiser) - [@thamer](https://github.com/thamer) - [@Ruchir28](https://github.com/Ruchir28) - [@thejcannon](https://github.com/thejcannon) - [@danparizher](https://github.com/danparizher) - [@chirizxc](https://github.com/chirizxc) ```sh curl --proto '=https' --tlsv1.2 -LsSf https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-installer.sh | sh ``` ```sh powershell -ExecutionPolicy Bypass -c "irm https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-installer.ps1 | iex" ``` | File | Platform | Checksum | | --------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------- | ------------------------------------------------------------------------------------------------------------------------ | | [ruff-aarch64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-aarch64-apple-darwin.tar.gz.sha256) | | [ruff-x86\_64-apple-darwin.tar.gz](https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-x86_64-apple-darwin.tar.gz.sha256) | | [ruff-aarch64-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-aarch64-pc-windows-msvc.zip.sha256) | | [ruff-i686-pc-windows-msvc.zip](https://github.com/astral-sh/ruff/releases/download/0.14.6/ruff-i686-pc-windows-msvc.zip) | x86 Windows | [checksum](https://github.com/astral-sh/ruff/releases/download/0.14.6/ru…

ntBre added 6 commits December 9, 2025 12:24

insert a hard line break if the first parameter has leading comments

4e10b29

add another test case

001cdee

add docs

f71c5ee

make own-line comments before lambda parameters leading on parameter

0ea9334

ntBre added formatter Related to the Ruff formatter bug An issue describing something that isn't working, or a PR that fixes a bug labels Dec 9, 2025

ntBre marked this pull request as ready for review December 9, 2025 17:58

ntBre requested a review from MichaReiser as a code owner December 9, 2025 17:58

MichaReiser approved these changes Dec 9, 2025

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ntBre merged commit 0bec5c0 into main Dec 9, 2025
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ntBre deleted the brent/lambda-parameter-comments branch December 9, 2025 19:07

ntBre mentioned this pull request Dec 9, 2025

Fix leading comment formatting for lambdas with multiple parameters #21879

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BrewTestBot mentioned this pull request Dec 11, 2025

ruff 0.14.9 Homebrew/homebrew-core#258289

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Fix comment placement in lambda parameters by ntBre · Pull Request #21868 · astral-sh/ruff · GitHub

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Fix comment placement in lambda parameters - #21868

Fix comment placement in lambda parameters#21868
ntBre merged 6 commits into
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brent/lambda-parameter-comments

ntBre commented Dec 9, 2025

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Fix comment placement in lambda parameters by ntBre · Pull Request #21868 · astral-sh/ruff · GitHub

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Fix comment placement in lambda parameters - #21868

Fix comment placement in lambda parameters#21868ntBre merged 6 commits intomainastral-sh/ruff:mainfrom brent/lambda-parameter-commentsastral-sh/ruff:brent/lambda-parameter-commentsCopy head branch name to clipboard

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ntBre commented Dec 9, 2025

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astral-sh-bot Bot commented Dec 9, 2025

ruff-ecosystem results

Formatter (stable)

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Fix comment placement in lambda parameters#21868
ntBre merged 6 commits into
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brent/lambda-parameter-comments