astral-sh/ruff - CodSpeed

ruff

Blog Docs Changelog

Performance History

Latest Results

Render structured type alternatives as separate code spans

lerebear/push-xtqywqpsmllp

11 minutes ago

Normalize reStructuredText references in structured type labels

lerebear/push-wrzqmxouryzx

11 minutes ago

[`pyupgrade`] Skip fix when a defaulted `TypeVar` precedes a non-defaulted one (`UP040`, `UP046`, `UP047`) In a PEP 695 type parameter list, a type parameter without a default cannot follow one with a default, and reordering the parameters would change the meaning of subscriptions, so there is no valid, equivalent fix. Bail out of the diagnostic instead of emitting invalid syntax. Fixes #27021

Jayashanker-Padishala:fix-27021-up040-typevar-default-order

18 minutes ago

epage:update-annotate

31 minutes ago

Reduce syntax error noise by swallowing dedents like indents

main

37 minutes ago

[`flake8-comprehensions`] NFKC-normalize keyword names in `C408` fix (#26813) Python normalizes identifiers to NFKC, but does not normalize string literals. The fix for `unnecessary-collection-call` (C408) reparses the call with libcst, which — unlike Ruff's own parser — does not normalize identifiers, and then emits the raw source text of each keyword argument as a dictionary key. This changed the key at runtime: `dict(ℼ=3.14)` has the key `π`, but was rewritten to `{"ℼ": 3.14}`. Normalize the keyword name before quoting it, matching what `fix::codemods` already does for qualified names built from libCST nodes. Fixes #16234 ## Summary Python normalizes identifiers to NFKC, but not string literals. The C408 fix re-parses the call with libcst, and that parser has a particular quirk: it does not normalize (Ruff's own parser does). So libcst hands over the raw source text of the kwarg as the key. `dict(ℼ=3.14)` has the key `π` at RUNTIME, but was rewritten to `{"ℼ": 3.14}` > this changes the behavior. My fix normalizes the kwarg name before quoting it. I'm not creating anything new, because `fix::codemods` already does the same thing. I decided not to mark it as unsafe, because the C408 fix is already unsafe. And unlike B009/B010/B043 (string > identifier, where preserving the behavior is impossible), C408 goes identifier > string. So the correct key can be computed :) ## Test Plan - 4 new cases at the end of `C408.py`: `ℼ`→`π`, `ſ`→`s`, `𝕒`→`a`, plus an ASCII control with no changes. - The snapshot diff is essentially additive. No diagnostic was altered. - The `allow_dict_calls_with_keyword_arguments` snapshot stayed INTACT. - `cargo test -p ruff_linter`: 2811 passed, 0 failed :) - `clippy --workspace --all-features -D warnings`: 100% clean. `generate-all`: up-to-date. And `prek run -a`: 14/14. Fixes #16234 --------- Co-authored-by: Brent Westbrook <36778786+ntBre@users.noreply.github.com>

main

53 minutes ago

Render structured type alternatives as separate code spans

lerebear/push-xtqywqpsmllp

55 minutes ago

Normalize reStructuredText references in structured type labels

lerebear/push-wrzqmxouryzx

55 minutes ago

Latest Branches

0%

[ty] Render structured type alternatives as separate code spans#27116

2 days ago

5848c66

lerebear/push-xtqywqpsmllp

0%

[ty] Normalize structured docstring type labels#26923

8 days ago

f0f1e02

lerebear/push-wrzqmxouryzx

0%

[`pyupgrade`] Skip fix when a defaulted `TypeVar` precedes a non-defaulted one (`UP040`, `UP046`, `UP047`)#27133

1 day ago

68db3a6

Jayashanker-Padishala:fix-27021-up040-typevar-default-order

© 2026 CodSpeed Technology

Home Terms Privacy Docs