astral-sh/ruff (ruff)
### [`v0.8.1`](https://redirect.github.com/astral-sh/ruff/blob/HEAD/CHANGELOG.md#081)
[Compare Source](https://redirect.github.com/astral-sh/ruff/compare/0.8.0...0.8.1)
##### Preview features
- Formatter: Avoid invalid syntax for format-spec with quotes for all Python versions ([#14625](https://redirect.github.com/astral-sh/ruff/pull/14625))
- Formatter: Consider quotes inside format-specs when choosing the quotes for an f-string ([#14493](https://redirect.github.com/astral-sh/ruff/pull/14493))
- Formatter: Do not consider f-strings with escaped newlines as multiline ([#14624](https://redirect.github.com/astral-sh/ruff/pull/14624))
- Formatter: Fix f-string formatting in assignment statement ([#14454](https://redirect.github.com/astral-sh/ruff/pull/14454))
- Formatter: Fix unnecessary space around power operator (`**`) in overlong f-string expressions ([#14489](https://redirect.github.com/astral-sh/ruff/pull/14489))
- \[`airflow`] Avoid implicit `schedule` argument to `DAG` and `@dag` (`AIR301`) ([#14581](https://redirect.github.com/astral-sh/ruff/pull/14581))
- \[`flake8-builtins`] Exempt private built-in modules (`A005`) ([#14505](https://redirect.github.com/astral-sh/ruff/pull/14505))
- \[`flake8-pytest-style`] Fix `pytest.mark.parametrize` rules to check calls instead of decorators ([#14515](https://redirect.github.com/astral-sh/ruff/pull/14515))
- \[`flake8-type-checking`] Implement `runtime-cast-value` (`TC006`) ([#14511](https://redirect.github.com/astral-sh/ruff/pull/14511))
- \[`flake8-type-checking`] Implement `unquoted-type-alias` (`TC007`) and `quoted-type-alias` (`TC008`) ([#12927](https://redirect.github.com/astral-sh/ruff/pull/12927))
- \[`flake8-use-pathlib`] Recommend `Path.iterdir()` over `os.listdir()` (`PTH208`) ([#14509](https://redirect.github.com/astral-sh/ruff/pull/14509))
- \[`pylint`] Extend `invalid-envvar-default` to detect `os.environ.get` (`PLW1508`) ([#14512](https://redirect.github.com/astral-sh/ruff/pull/14512))
- \[`pylint`] Implement `len-test` (`PLC1802`) ([#14309](https://redirect.github.com/astral-sh/ruff/pull/14309))
- \[`refurb`] Fix bug where methods defined using lambdas were flagged by `FURB118` ([#14639](https://redirect.github.com/astral-sh/ruff/pull/14639))
- \[`ruff`] Auto-add `r` prefix when string has no backslashes for `unraw-re-pattern` (`RUF039`) ([#14536](https://redirect.github.com/astral-sh/ruff/pull/14536))
- \[`ruff`] Implement `invalid-assert-message-literal-argument` (`RUF040`) ([#14488](https://redirect.github.com/astral-sh/ruff/pull/14488))
- \[`ruff`] Implement `unnecessary-nested-literal` (`RUF041`) ([#14323](https://redirect.github.com/astral-sh/ruff/pull/14323))
- \[`ruff`] Implement `unnecessary-regular-expression` (`RUF055`) ([#14659](https://redirect.github.com/astral-sh/ruff/pull/14659))
##### Rule changes
- Ignore more rules for stub files ([#14541](https://redirect.github.com/astral-sh/ruff/pull/14541))
- \[`pep8-naming`] Eliminate false positives for single-letter names (`N811`, `N814`) ([#14584](https://redirect.github.com/astral-sh/ruff/pull/14584))
- \[`pyflakes`] Avoid false positives in `@no_type_check` contexts (`F821`, `F722`) ([#14615](https://redirect.github.com/astral-sh/ruff/pull/14615))
- \[`ruff`] Detect redirected-noqa in file-level comments (`RUF101`) ([#14635](https://redirect.github.com/astral-sh/ruff/pull/14635))
- \[`ruff`] Mark fixes for `unsorted-dunder-all` and `unsorted-dunder-slots` as unsafe when there are complex comments in the sequence (`RUF022`, `RUF023`) ([#14560](https://redirect.github.com/astral-sh/ruff/pull/14560))
##### Bug fixes
- Avoid fixing code to `None | None` for `redundant-none-literal` (`PYI061`) and `never-union` (`RUF020`) ([#14583](https://redirect.github.com/astral-sh/ruff/pull/14583), [#14589](https://redirect.github.com/astral-sh/ruff/pull/14589))
- \[`flake8-bugbear`] Fix `mutable-contextvar-default` to resolve annotated function calls properly (`B039`) ([#14532](https://redirect.github.com/astral-sh/ruff/pull/14532))
- \[`flake8-pyi`, `ruff`] Fix traversal of nested literals and unions (`PYI016`, `PYI051`, `PYI055`, `PYI062`, `RUF041`) ([#14641](https://redirect.github.com/astral-sh/ruff/pull/14641))
- \[`flake8-pyi`] Avoid rewriting invalid type expressions in `unnecessary-type-union` (`PYI055`) ([#14660](https://redirect.github.com/astral-sh/ruff/pull/14660))
- \[`flake8-type-checking`] Avoid syntax errors and type checking problem for quoted annotations autofix (`TC003`, `TC006`) ([#14634](https://redirect.github.com/astral-sh/ruff/pull/14634))
- \[`pylint`] Do not wrap function calls in parentheses in the fix for unnecessary-dunder-call (`PLC2801`) ([#14601](https://redirect.github.com/astral-sh/ruff/pull/14601))
- \[`ruff`] Handle `attrs`'s `auto_attribs` correctly (`RUF009`) ([#14520](https://redirect.github.com/astral-sh/ruff/pull/14520))
### [`v0.8.0`](https://redirect.github.com/astral-sh/ruff/blob/HEAD/CHANGELOG.md#080)
[Compare Source](https://redirect.github.com/astral-sh/ruff/compare/0.7.4...0.8.0)
Check out the [blog post](https://astral.sh/blog/ruff-v0.8.0) for a migration guide and overview of the changes!
##### Breaking changes
See also, the "Remapped rules" section which may result in disabled rules.
- **Default to Python 3.9**
Ruff now defaults to Python 3.9 instead of 3.8 if no explicit Python version is configured using [`ruff.target-version`](https://docs.astral.sh/ruff/settings/#target-version) or [`project.requires-python`](https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#python-requires) ([#13896](https://redirect.github.com/astral-sh/ruff/pull/13896))
- **Changed location of `pydoclint` diagnostics**
[`pydoclint`](https://docs.astral.sh/ruff/rules/#pydoclint-doc) diagnostics now point to the first-line of the problematic docstring. Previously, this was not the case.
If you've opted into these preview rules but have them suppressed using
[`noqa`](https://docs.astral.sh/ruff/linter/#error-suppression) comments in
some places, this change may mean that you need to move the `noqa` suppression
comments. Most users should be unaffected by this change.
- **Use XDG (i.e. `~/.local/bin`) instead of the Cargo home directory in the standalone installer**
Previously, Ruff's installer used `$CARGO_HOME` or `~/.cargo/bin` for its target install directory. Now, Ruff will be installed into `$XDG_BIN_HOME`, `$XDG_DATA_HOME/../bin`, or `~/.local/bin` (in that order).
This change is only relevant to users of the standalone Ruff installer (using the shell or PowerShell script). If you installed Ruff using uv or pip, you should be unaffected.
- **Changes to the line width calculation**
Ruff now uses a new version of the [unicode-width](https://redirect.github.com/unicode-rs/unicode-width) Rust crate to calculate the line width. In very rare cases, this may lead to lines containing Unicode characters being reformatted, or being considered too long when they were not before ([`E501`](https://docs.astral.sh/ruff/rules/line-too-long/)).
##### Removed Rules
The following deprecated rules have been removed:
- [`missing-type-self`](https://docs.astral.sh/ruff/rules/missing-type-self/) (`ANN101`)
- [`missing-type-cls`](https://docs.astral.sh/ruff/rules/missing-type-cls/) (`ANN102`)
- [`syntax-error`](https://docs.astral.sh/ruff/rules/syntax-error/) (`E999`)
- [`pytest-missing-fixture-name-underscore`](https://docs.astral.sh/ruff/rules/pytest-missing-fixture-name-underscore/) (`PT004`)
- [`pytest-incorrect-fixture-name-underscore`](https://docs.astral.sh/ruff/rules/pytest-incorrect-fixture-name-underscore/) (`PT005`)
- [`unpacked-list-comprehension`](https://docs.astral.sh/ruff/rules/unpacked-list-comprehension/) (`UP027`)
##### Remapped rules
The following rules have been remapped to new rule codes:
- [`flake8-type-checking`](https://docs.astral.sh/ruff/rules/#flake8-type-checking-tc): `TCH` to `TC`
##### Stabilization
The following rules have been stabilized and are no longer in preview:
- [`builtin-import-shadowing`](https://docs.astral.sh/ruff/rules/builtin-import-shadowing/) (`A004`)
- [`mutable-contextvar-default`](https://docs.astral.sh/ruff/rules/mutable-contextvar-default/) (`B039`)
- [`fast-api-redundant-response-model`](https://docs.astral.sh/ruff/rules/fast-api-redundant-response-model/) (`FAST001`)
- [`fast-api-non-annotated-dependency`](https://docs.astral.sh/ruff/rules/fast-api-non-annotated-dependency/) (`FAST002`)
- [`dict-index-missing-items`](https://docs.astral.sh/ruff/rules/dict-index-missing-items/) (`PLC0206`)
- [`pep484-style-positional-only-argument`](https://docs.astral.sh/ruff/rules/pep484-style-positional-only-argument/) (`PYI063`)
- [`redundant-final-literal`](https://docs.astral.sh/ruff/rules/redundant-final-literal/) (`PYI064`)
- [`bad-version-info-order`](https://docs.astral.sh/ruff/rules/bad-version-info-order/) (`PYI066`)
- [`parenthesize-chained-operators`](https://docs.astral.sh/ruff/rules/parenthesize-chained-operators/) (`RUF021`)
- [`unsorted-dunder-all`](https://docs.astral.sh/ruff/rules/unsorted-dunder-all/) (`RUF022`)
- [`unsorted-dunder-slots`](https://docs.astral.sh/ruff/rules/unsorted-dunder-slots/) (`RUF023`)
- [`assert-with-print-message`](https://docs.astral.sh/ruff/rules/assert-with-print-message/) (`RUF030`)
- [`unnecessary-default-type-args`](https://docs.astral.sh/ruff/rules/unnecessary-default-type-args/) (`UP043`)
The following behaviors have been stabilized:
- [`ambiguous-variable-name`](https://docs.astral.sh/ruff/rules/ambiguous-variable-name/) (`E741`): Violations in stub files are now ignored. Stub authors typically don't control variable names.
- [`printf-string-formatting`](https://docs.astral.sh/ruff/rules/printf-string-formatting/) (`UP031`): Report all `printf`-like usages even if no autofix is available
The following fixes have been stabilized:
- [`zip-instead-of-pairwise`](https://docs.astral.sh/ruff/rules/zip-instead-of-pairwise/) (`RUF007`)
##### Preview features
- \[`flake8-datetimez`] Exempt `min.time()` and `max.time()` (`DTZ901`) ([#14394](https://redirect.github.com/astral-sh/ruff/pull/14394))
- \[`flake8-pie`] Mark fix as unsafe if the following statement is a string literal (`PIE790`) ([#14393](https://redirect.github.com/astral-sh/ruff/pull/14393))
- \[`flake8-pyi`] New rule `redundant-none-literal` (`PYI061`) ([#14316](https://redirect.github.com/astral-sh/ruff/pull/14316))
- \[`flake8-pyi`] Add autofix for `redundant-numeric-union` (`PYI041`) ([#14273](https://redirect.github.com/astral-sh/ruff/pull/14273))
- \[`ruff`] New rule `map-int-version-parsing` (`RUF048`) ([#14373](https://redirect.github.com/astral-sh/ruff/pull/14373))
- \[`ruff`] New rule `redundant-bool-literal` (`RUF038`) ([#14319](https://redirect.github.com/astral-sh/ruff/pull/14319))
- \[`ruff`] New rule `unraw-re-pattern` (`RUF039`) ([#14446](https://redirect.github.com/astral-sh/ruff/pull/14446))
- \[`pycodestyle`] Exempt `pytest.importorskip()` calls (`E402`) ([#14474](https://redirect.github.com/astral-sh/ruff/pull/14474))
- \[`pylint`] Autofix suggests using sets when possible (`PLR1714`) ([#14372](https://redirect.github.com/astral-sh/ruff/pull/14372))
##### Rule changes
- [`invalid-pyproject-toml`](https://docs.astral.sh/ruff/rules/invalid-pyproject-toml/) (`RUF200`): Updated to reflect the provisionally accepted [PEP 639](https://peps.python.org/pep-0639/).
- \[`flake8-pyi`] Avoid panic in unfixable case (`PYI041`) ([#14402](https://redirect.github.com/astral-sh/ruff/pull/14402))
- \[`flake8-type-checking`] Correctly handle quotes in subscript expression when generating an autofix ([#14371](https://redirect.github.com/astral-sh/ruff/pull/14371))
- \[`pylint`] Suggest correct autofix for `__contains__` (`PLC2801`) ([#14424](https://redirect.github.com/astral-sh/ruff/pull/14424))
##### Configuration
- Ruff now emits a warning instead of an error when a configuration [`ignore`](https://docs.astral.sh/ruff/settings/#lint_ignore)s a rule that has been removed ([#14435](https://redirect.github.com/astral-sh/ruff/pull/14435))
- Ruff now validates that `lint.flake8-import-conventions.aliases` only uses valid module names and aliases ([#14477](https://redirect.github.com/astral-sh/ruff/pull/14477))
### [`v0.7.4`](https://redirect.github.com/astral-sh/ruff/blob/HEAD/CHANGELOG.md#074)
[Compare Source](https://redirect.github.com/astral-sh/ruff/compare/0.7.3...0.7.4)
##### Preview features
- \[`flake8-datetimez`] Detect usages of `datetime.max`/`datetime.min` (`DTZ901`) ([#14288](https://redirect.github.com/astral-sh/ruff/pull/14288))
- \[`flake8-logging`] Implement `root-logger-calls` (`LOG015`) ([#14302](https://redirect.github.com/astral-sh/ruff/pull/14302))
- \[`flake8-no-pep420`] Detect empty implicit namespace packages (`INP001`) ([#14236](https://redirect.github.com/astral-sh/ruff/pull/14236))
- \[`flake8-pyi`] Add "replace with `Self`" fix (`PYI019`) ([#14238](https://redirect.github.com/astral-sh/ruff/pull/14238))
- \[`perflint`] Implement quick-fix for `manual-list-comprehension` (`PERF401`) ([#13919](https://redirect.github.com/astral-sh/ruff/pull/13919))
- \[`pylint`] Implement `shallow-copy-environ` (`W1507`) ([#14241](https://redirect.github.com/astral-sh/ruff/pull/14241))
- \[`ruff`] Implement `none-not-at-end-of-union` (`RUF036`) ([#14314](https://redirect.github.com/astral-sh/ruff/pull/14314))
- \[`ruff`] Implementation `unsafe-markup-call` from `flake8-markupsafe` plugin (`RUF035`) ([#14224](https://redirect.github.com/astral-sh/ruff/pull/14224))
- \[`ruff`] Report problems for `attrs` dataclasses (`RUF008`, `RUF009`) ([#14327](https://redirect.github.com/astral-sh/ruff/pull/14327))
##### Rule changes
- \[`flake8-boolean-trap`] Exclude dunder methods that define operators (`FBT001`) ([#14203](https://redirect.github.com/astral-sh/ruff/pull/14203))
- \[`flake8-pyi`] Add "replace with `Self`" fix (`PYI034`) ([#14217](https://redirect.github.com/astral-sh/ruff/pull/14217))
- \[`flake8-pyi`] Always autofix `duplicate-union-members` (`PYI016`) ([#14270](https://redirect.github.com/astral-sh/ruff/pull/14270))
- \[`flake8-pyi`] Improve autofix for nested and mixed type unions for `unnecessary-type-union` (`PYI055`) ([#14272](https://redirect.github.com/astral-sh/ruff/pull/14272))
- \[`flake8-pyi`] Mark fix as unsafe when type annotation contains comments for `duplicate-literal-member` (`PYI062`) ([#14268](https://redirect.github.com/astral-sh/ruff/pull/14268))
##### Server
- Use the current working directory to resolve settings from `ruff.configuration` ([#14352](https://redirect.github.com/astral-sh/ruff/pull/14352))
##### Bug fixes
- Avoid conflicts between `PLC014` (`useless-import-alias`) and `I002` (`missing-required-import`) by considering `lint.isort.required-imports` for `PLC014` ([#14287](https://redirect.github.com/astral-sh/ruff/pull/14287))
- \[`flake8-type-checking`] Skip quoting annotation if it becomes invalid syntax (`TCH001`)
- \[`flake8-pyi`] Avoid using `typing.Self` in stub files pre-Python 3.11 (`PYI034`) ([#14230](https://redirect.github.com/astral-sh/ruff/pull/14230))
- \[`flake8-pytest-style`] Flag `pytest.raises` call with keyword argument `expected_exception` (`PT011`) ([#14298](https://redirect.github.com/astral-sh/ruff/pull/14298))
- \[`flake8-simplify`] Infer "unknown" truthiness for literal iterables whose items are all unpacks (`SIM222`) ([#14263](https://redirect.github.com/astral-sh/ruff/pull/14263))
- \[`flake8-type-checking`] Fix false positives for `typing.Annotated` (`TCH001`) ([#14311](https://redirect.github.com/astral-sh/ruff/pull/14311))
- \[`pylint`] Allow `await` at the top-level scope of a notebook (`PLE1142`) ([#14225](https://redirect.github.com/astral-sh/ruff/pull/14225))
- \[`pylint`] Fix miscellaneous issues in `await-outside-async` detection (`PLE1142`) ([#14218](https://redirect.github.com/astral-sh/ruff/pull/14218))
- \[`pyupgrade`] Avoid applying PEP 646 rewrites in invalid contexts (`UP044`) ([#14234](https://redirect.github.com/astral-sh/ruff/pull/14234))
- \[`pyupgrade`] Detect permutations in redundant open modes (`UP015`) ([#14255](https://redirect.github.com/astral-sh/ruff/pull/14255))
- \[`refurb`] Avoid triggering `hardcoded-string-charset` for reordered sets (`FURB156`) ([#14233](https://redirect.github.com/astral-sh/ruff/pull/14233))
- \[`refurb`] Further special cases added to `verbose-decimal-constructor` (`FURB157`) ([#14216](https://redirect.github.com/astral-sh/ruff/pull/14216))
- \[`refurb`] Use `UserString` instead of non-existent `UserStr` (`FURB189`) ([#14209](https://redirect.github.com/astral-sh/ruff/pull/14209))
- \[`ruff`] Avoid treating lowercase letters as `# noqa` codes (`RUF100`) ([#14229](https://redirect.github.com/astral-sh/ruff/pull/14229))
- \[`ruff`] Do not report when `Optional` has no type arguments (`RUF013`) ([#14181](https://redirect.github.com/astral-sh/ruff/pull/14181))
##### Documentation
- Add "Notebook behavior" section for `F704`, `PLE1142` ([#14266](https://redirect.github.com/astral-sh/ruff/pull/14266))
- Document comment policy around fix safety ([#14300](https://redirect.github.com/astral-sh/ruff/pull/14300))
### [`v0.7.3`](https://redirect.github.com/astral-sh/ruff/blob/HEAD/CHANGELOG.md#073)
[Compare Source](https://redirect.github.com/astral-sh/ruff/compare/0.7.2...0.7.3)
##### Preview features
- Formatter: Disallow single-line implicit concatenated strings ([#13928](https://redirect.github.com/astral-sh/ruff/pull/13928))
- \[`flake8-pyi`] Include all Python file types for `PYI006` and `PYI066` ([#14059](https://redirect.github.com/astral-sh/ruff/pull/14059))
- \[`flake8-simplify`] Implement `split-of-static-string` (`SIM905`) ([#14008](https://redirect.github.com/astral-sh/ruff/pull/14008))
- \[`refurb`] Implement `subclass-builtin` (`FURB189`) ([#14105](https://redirect.github.com/astral-sh/ruff/pull/14105))
- \[`ruff`] Improve diagnostic messages and docs (`RUF031`, `RUF032`, `RUF034`) ([#14068](https://redirect.github.com/astral-sh/ruff/pull/14068))
##### Rule changes
- Detect items that hash to same value in duplicate sets (`B033`, `PLC0208`) ([#14064](https://redirect.github.com/astral-sh/ruff/pull/14064))
- \[`eradicate`] Better detection of IntelliJ language injection comments (`ERA001`) ([#14094](https://redirect.github.com/astral-sh/ruff/pull/14094))
- \[`flake8-pyi`] Add autofix for `docstring-in-stub` (`PYI021`) ([#14150](https://redirect.github.com/astral-sh/ruff/pull/14150))
- \[`flake8-pyi`] Update `duplicate-literal-member` (`PYI062`) to alawys provide an autofix ([#14188](https://redirect.github.com/astral-sh/ruff/pull/14188))
- \[`pyflakes`] Detect items that hash to same value in duplicate dictionaries (`F601`) ([#14065](https://redirect.github.com/astral-sh/ruff/pull/14065))
- \[`ruff`] Fix false positive for decorators (`RUF028`) ([#14061](https://redirect.github.com/astral-sh/ruff/pull/14061))
##### Bug fixes
- Avoid parsing joint rule codes as distinct codes in `# noqa` ([#12809](https://redirect.github.com/astral-sh/ruff/pull/12809))
- \[`eradicate`] ignore `# language=` in commented-out-code rule (ERA001) ([#14069](https://redirect.github.com/astral-sh/ruff/pull/14069))
- \[`flake8-bugbear`] - do not run `mutable-argument-default` on stubs (`B006`) ([#14058](https://redirect.github.com/astral-sh/ruff/pull/14058))
- \[`flake8-builtins`] Skip lambda expressions in `builtin-argument-shadowing (A002)` ([#14144](https://redirect.github.com/astral-sh/ruff/pull/14144))
- \[`flake8-comprehension`] Also remove trailing comma while fixing `C409` and `C419` ([#14097](https://redirect.github.com/astral-sh/ruff/pull/14097))
- \[`flake8-simplify`] Allow `open` without context manager in `return` statement (`SIM115`) ([#14066](https://redirect.github.com/astral-sh/ruff/pull/14066))
- \[`pylint`] Respect hash-equivalent literals in `iteration-over-set` (`PLC0208`) ([#14063](https://redirect.github.com/astral-sh/ruff/pull/14063))
- \[`pylint`] Update known dunder methods for Python 3.13 (`PLW3201`) ([#14146](https://redirect.github.com/astral-sh/ruff/pull/14146))
- \[`pyupgrade`] - ignore kwarg unpacking for `UP044` ([#14053](https://redirect.github.com/astral-sh/ruff/pull/14053))
- \[`refurb`] Parse more exotic decimal strings in `verbose-decimal-constructor` (`FURB157`) ([#14098](https://redirect.github.com/astral-sh/ruff/pull/14098))
##### Documentation
- Add links to missing related options within rule documentations ([#13971](https://redirect.github.com/astral-sh/ruff/pull/13971))
- Add rule short code to mkdocs tags to allow searching via rule codes ([#14040](https://redirect.github.com/astral-sh/ruff/pull/14040))
Configuration
📅 Schedule: Branch creation - "after 5pm on friday" (UTC), Automerge - At any time (no schedule defined).
🚦 Automerge: Enabled.
♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
[ ] If you want to rebase/retry this PR, check this box
This PR contains the following updates:
0.7.2->0.8.1Release Notes
astral-sh/ruff (ruff)
### [`v0.8.1`](https://redirect.github.com/astral-sh/ruff/blob/HEAD/CHANGELOG.md#081) [Compare Source](https://redirect.github.com/astral-sh/ruff/compare/0.8.0...0.8.1) ##### Preview features - Formatter: Avoid invalid syntax for format-spec with quotes for all Python versions ([#14625](https://redirect.github.com/astral-sh/ruff/pull/14625)) - Formatter: Consider quotes inside format-specs when choosing the quotes for an f-string ([#14493](https://redirect.github.com/astral-sh/ruff/pull/14493)) - Formatter: Do not consider f-strings with escaped newlines as multiline ([#14624](https://redirect.github.com/astral-sh/ruff/pull/14624)) - Formatter: Fix f-string formatting in assignment statement ([#14454](https://redirect.github.com/astral-sh/ruff/pull/14454)) - Formatter: Fix unnecessary space around power operator (`**`) in overlong f-string expressions ([#14489](https://redirect.github.com/astral-sh/ruff/pull/14489)) - \[`airflow`] Avoid implicit `schedule` argument to `DAG` and `@dag` (`AIR301`) ([#14581](https://redirect.github.com/astral-sh/ruff/pull/14581)) - \[`flake8-builtins`] Exempt private built-in modules (`A005`) ([#14505](https://redirect.github.com/astral-sh/ruff/pull/14505)) - \[`flake8-pytest-style`] Fix `pytest.mark.parametrize` rules to check calls instead of decorators ([#14515](https://redirect.github.com/astral-sh/ruff/pull/14515)) - \[`flake8-type-checking`] Implement `runtime-cast-value` (`TC006`) ([#14511](https://redirect.github.com/astral-sh/ruff/pull/14511)) - \[`flake8-type-checking`] Implement `unquoted-type-alias` (`TC007`) and `quoted-type-alias` (`TC008`) ([#12927](https://redirect.github.com/astral-sh/ruff/pull/12927)) - \[`flake8-use-pathlib`] Recommend `Path.iterdir()` over `os.listdir()` (`PTH208`) ([#14509](https://redirect.github.com/astral-sh/ruff/pull/14509)) - \[`pylint`] Extend `invalid-envvar-default` to detect `os.environ.get` (`PLW1508`) ([#14512](https://redirect.github.com/astral-sh/ruff/pull/14512)) - \[`pylint`] Implement `len-test` (`PLC1802`) ([#14309](https://redirect.github.com/astral-sh/ruff/pull/14309)) - \[`refurb`] Fix bug where methods defined using lambdas were flagged by `FURB118` ([#14639](https://redirect.github.com/astral-sh/ruff/pull/14639)) - \[`ruff`] Auto-add `r` prefix when string has no backslashes for `unraw-re-pattern` (`RUF039`) ([#14536](https://redirect.github.com/astral-sh/ruff/pull/14536)) - \[`ruff`] Implement `invalid-assert-message-literal-argument` (`RUF040`) ([#14488](https://redirect.github.com/astral-sh/ruff/pull/14488)) - \[`ruff`] Implement `unnecessary-nested-literal` (`RUF041`) ([#14323](https://redirect.github.com/astral-sh/ruff/pull/14323)) - \[`ruff`] Implement `unnecessary-regular-expression` (`RUF055`) ([#14659](https://redirect.github.com/astral-sh/ruff/pull/14659)) ##### Rule changes - Ignore more rules for stub files ([#14541](https://redirect.github.com/astral-sh/ruff/pull/14541)) - \[`pep8-naming`] Eliminate false positives for single-letter names (`N811`, `N814`) ([#14584](https://redirect.github.com/astral-sh/ruff/pull/14584)) - \[`pyflakes`] Avoid false positives in `@no_type_check` contexts (`F821`, `F722`) ([#14615](https://redirect.github.com/astral-sh/ruff/pull/14615)) - \[`ruff`] Detect redirected-noqa in file-level comments (`RUF101`) ([#14635](https://redirect.github.com/astral-sh/ruff/pull/14635)) - \[`ruff`] Mark fixes for `unsorted-dunder-all` and `unsorted-dunder-slots` as unsafe when there are complex comments in the sequence (`RUF022`, `RUF023`) ([#14560](https://redirect.github.com/astral-sh/ruff/pull/14560)) ##### Bug fixes - Avoid fixing code to `None | None` for `redundant-none-literal` (`PYI061`) and `never-union` (`RUF020`) ([#14583](https://redirect.github.com/astral-sh/ruff/pull/14583), [#14589](https://redirect.github.com/astral-sh/ruff/pull/14589)) - \[`flake8-bugbear`] Fix `mutable-contextvar-default` to resolve annotated function calls properly (`B039`) ([#14532](https://redirect.github.com/astral-sh/ruff/pull/14532)) - \[`flake8-pyi`, `ruff`] Fix traversal of nested literals and unions (`PYI016`, `PYI051`, `PYI055`, `PYI062`, `RUF041`) ([#14641](https://redirect.github.com/astral-sh/ruff/pull/14641)) - \[`flake8-pyi`] Avoid rewriting invalid type expressions in `unnecessary-type-union` (`PYI055`) ([#14660](https://redirect.github.com/astral-sh/ruff/pull/14660)) - \[`flake8-type-checking`] Avoid syntax errors and type checking problem for quoted annotations autofix (`TC003`, `TC006`) ([#14634](https://redirect.github.com/astral-sh/ruff/pull/14634)) - \[`pylint`] Do not wrap function calls in parentheses in the fix for unnecessary-dunder-call (`PLC2801`) ([#14601](https://redirect.github.com/astral-sh/ruff/pull/14601)) - \[`ruff`] Handle `attrs`'s `auto_attribs` correctly (`RUF009`) ([#14520](https://redirect.github.com/astral-sh/ruff/pull/14520)) ### [`v0.8.0`](https://redirect.github.com/astral-sh/ruff/blob/HEAD/CHANGELOG.md#080) [Compare Source](https://redirect.github.com/astral-sh/ruff/compare/0.7.4...0.8.0) Check out the [blog post](https://astral.sh/blog/ruff-v0.8.0) for a migration guide and overview of the changes! ##### Breaking changes See also, the "Remapped rules" section which may result in disabled rules. - **Default to Python 3.9** Ruff now defaults to Python 3.9 instead of 3.8 if no explicit Python version is configured using [`ruff.target-version`](https://docs.astral.sh/ruff/settings/#target-version) or [`project.requires-python`](https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#python-requires) ([#13896](https://redirect.github.com/astral-sh/ruff/pull/13896)) - **Changed location of `pydoclint` diagnostics** [`pydoclint`](https://docs.astral.sh/ruff/rules/#pydoclint-doc) diagnostics now point to the first-line of the problematic docstring. Previously, this was not the case. If you've opted into these preview rules but have them suppressed using [`noqa`](https://docs.astral.sh/ruff/linter/#error-suppression) comments in some places, this change may mean that you need to move the `noqa` suppression comments. Most users should be unaffected by this change. - **Use XDG (i.e. `~/.local/bin`) instead of the Cargo home directory in the standalone installer** Previously, Ruff's installer used `$CARGO_HOME` or `~/.cargo/bin` for its target install directory. Now, Ruff will be installed into `$XDG_BIN_HOME`, `$XDG_DATA_HOME/../bin`, or `~/.local/bin` (in that order). This change is only relevant to users of the standalone Ruff installer (using the shell or PowerShell script). If you installed Ruff using uv or pip, you should be unaffected. - **Changes to the line width calculation** Ruff now uses a new version of the [unicode-width](https://redirect.github.com/unicode-rs/unicode-width) Rust crate to calculate the line width. In very rare cases, this may lead to lines containing Unicode characters being reformatted, or being considered too long when they were not before ([`E501`](https://docs.astral.sh/ruff/rules/line-too-long/)). ##### Removed Rules The following deprecated rules have been removed: - [`missing-type-self`](https://docs.astral.sh/ruff/rules/missing-type-self/) (`ANN101`) - [`missing-type-cls`](https://docs.astral.sh/ruff/rules/missing-type-cls/) (`ANN102`) - [`syntax-error`](https://docs.astral.sh/ruff/rules/syntax-error/) (`E999`) - [`pytest-missing-fixture-name-underscore`](https://docs.astral.sh/ruff/rules/pytest-missing-fixture-name-underscore/) (`PT004`) - [`pytest-incorrect-fixture-name-underscore`](https://docs.astral.sh/ruff/rules/pytest-incorrect-fixture-name-underscore/) (`PT005`) - [`unpacked-list-comprehension`](https://docs.astral.sh/ruff/rules/unpacked-list-comprehension/) (`UP027`) ##### Remapped rules The following rules have been remapped to new rule codes: - [`flake8-type-checking`](https://docs.astral.sh/ruff/rules/#flake8-type-checking-tc): `TCH` to `TC` ##### Stabilization The following rules have been stabilized and are no longer in preview: - [`builtin-import-shadowing`](https://docs.astral.sh/ruff/rules/builtin-import-shadowing/) (`A004`) - [`mutable-contextvar-default`](https://docs.astral.sh/ruff/rules/mutable-contextvar-default/) (`B039`) - [`fast-api-redundant-response-model`](https://docs.astral.sh/ruff/rules/fast-api-redundant-response-model/) (`FAST001`) - [`fast-api-non-annotated-dependency`](https://docs.astral.sh/ruff/rules/fast-api-non-annotated-dependency/) (`FAST002`) - [`dict-index-missing-items`](https://docs.astral.sh/ruff/rules/dict-index-missing-items/) (`PLC0206`) - [`pep484-style-positional-only-argument`](https://docs.astral.sh/ruff/rules/pep484-style-positional-only-argument/) (`PYI063`) - [`redundant-final-literal`](https://docs.astral.sh/ruff/rules/redundant-final-literal/) (`PYI064`) - [`bad-version-info-order`](https://docs.astral.sh/ruff/rules/bad-version-info-order/) (`PYI066`) - [`parenthesize-chained-operators`](https://docs.astral.sh/ruff/rules/parenthesize-chained-operators/) (`RUF021`) - [`unsorted-dunder-all`](https://docs.astral.sh/ruff/rules/unsorted-dunder-all/) (`RUF022`) - [`unsorted-dunder-slots`](https://docs.astral.sh/ruff/rules/unsorted-dunder-slots/) (`RUF023`) - [`assert-with-print-message`](https://docs.astral.sh/ruff/rules/assert-with-print-message/) (`RUF030`) - [`unnecessary-default-type-args`](https://docs.astral.sh/ruff/rules/unnecessary-default-type-args/) (`UP043`) The following behaviors have been stabilized: - [`ambiguous-variable-name`](https://docs.astral.sh/ruff/rules/ambiguous-variable-name/) (`E741`): Violations in stub files are now ignored. Stub authors typically don't control variable names. - [`printf-string-formatting`](https://docs.astral.sh/ruff/rules/printf-string-formatting/) (`UP031`): Report all `printf`-like usages even if no autofix is available The following fixes have been stabilized: - [`zip-instead-of-pairwise`](https://docs.astral.sh/ruff/rules/zip-instead-of-pairwise/) (`RUF007`) ##### Preview features - \[`flake8-datetimez`] Exempt `min.time()` and `max.time()` (`DTZ901`) ([#14394](https://redirect.github.com/astral-sh/ruff/pull/14394)) - \[`flake8-pie`] Mark fix as unsafe if the following statement is a string literal (`PIE790`) ([#14393](https://redirect.github.com/astral-sh/ruff/pull/14393)) - \[`flake8-pyi`] New rule `redundant-none-literal` (`PYI061`) ([#14316](https://redirect.github.com/astral-sh/ruff/pull/14316)) - \[`flake8-pyi`] Add autofix for `redundant-numeric-union` (`PYI041`) ([#14273](https://redirect.github.com/astral-sh/ruff/pull/14273)) - \[`ruff`] New rule `map-int-version-parsing` (`RUF048`) ([#14373](https://redirect.github.com/astral-sh/ruff/pull/14373)) - \[`ruff`] New rule `redundant-bool-literal` (`RUF038`) ([#14319](https://redirect.github.com/astral-sh/ruff/pull/14319)) - \[`ruff`] New rule `unraw-re-pattern` (`RUF039`) ([#14446](https://redirect.github.com/astral-sh/ruff/pull/14446)) - \[`pycodestyle`] Exempt `pytest.importorskip()` calls (`E402`) ([#14474](https://redirect.github.com/astral-sh/ruff/pull/14474)) - \[`pylint`] Autofix suggests using sets when possible (`PLR1714`) ([#14372](https://redirect.github.com/astral-sh/ruff/pull/14372)) ##### Rule changes - [`invalid-pyproject-toml`](https://docs.astral.sh/ruff/rules/invalid-pyproject-toml/) (`RUF200`): Updated to reflect the provisionally accepted [PEP 639](https://peps.python.org/pep-0639/). - \[`flake8-pyi`] Avoid panic in unfixable case (`PYI041`) ([#14402](https://redirect.github.com/astral-sh/ruff/pull/14402)) - \[`flake8-type-checking`] Correctly handle quotes in subscript expression when generating an autofix ([#14371](https://redirect.github.com/astral-sh/ruff/pull/14371)) - \[`pylint`] Suggest correct autofix for `__contains__` (`PLC2801`) ([#14424](https://redirect.github.com/astral-sh/ruff/pull/14424)) ##### Configuration - Ruff now emits a warning instead of an error when a configuration [`ignore`](https://docs.astral.sh/ruff/settings/#lint_ignore)s a rule that has been removed ([#14435](https://redirect.github.com/astral-sh/ruff/pull/14435)) - Ruff now validates that `lint.flake8-import-conventions.aliases` only uses valid module names and aliases ([#14477](https://redirect.github.com/astral-sh/ruff/pull/14477)) ### [`v0.7.4`](https://redirect.github.com/astral-sh/ruff/blob/HEAD/CHANGELOG.md#074) [Compare Source](https://redirect.github.com/astral-sh/ruff/compare/0.7.3...0.7.4) ##### Preview features - \[`flake8-datetimez`] Detect usages of `datetime.max`/`datetime.min` (`DTZ901`) ([#14288](https://redirect.github.com/astral-sh/ruff/pull/14288)) - \[`flake8-logging`] Implement `root-logger-calls` (`LOG015`) ([#14302](https://redirect.github.com/astral-sh/ruff/pull/14302)) - \[`flake8-no-pep420`] Detect empty implicit namespace packages (`INP001`) ([#14236](https://redirect.github.com/astral-sh/ruff/pull/14236)) - \[`flake8-pyi`] Add "replace with `Self`" fix (`PYI019`) ([#14238](https://redirect.github.com/astral-sh/ruff/pull/14238)) - \[`perflint`] Implement quick-fix for `manual-list-comprehension` (`PERF401`) ([#13919](https://redirect.github.com/astral-sh/ruff/pull/13919)) - \[`pylint`] Implement `shallow-copy-environ` (`W1507`) ([#14241](https://redirect.github.com/astral-sh/ruff/pull/14241)) - \[`ruff`] Implement `none-not-at-end-of-union` (`RUF036`) ([#14314](https://redirect.github.com/astral-sh/ruff/pull/14314)) - \[`ruff`] Implementation `unsafe-markup-call` from `flake8-markupsafe` plugin (`RUF035`) ([#14224](https://redirect.github.com/astral-sh/ruff/pull/14224)) - \[`ruff`] Report problems for `attrs` dataclasses (`RUF008`, `RUF009`) ([#14327](https://redirect.github.com/astral-sh/ruff/pull/14327)) ##### Rule changes - \[`flake8-boolean-trap`] Exclude dunder methods that define operators (`FBT001`) ([#14203](https://redirect.github.com/astral-sh/ruff/pull/14203)) - \[`flake8-pyi`] Add "replace with `Self`" fix (`PYI034`) ([#14217](https://redirect.github.com/astral-sh/ruff/pull/14217)) - \[`flake8-pyi`] Always autofix `duplicate-union-members` (`PYI016`) ([#14270](https://redirect.github.com/astral-sh/ruff/pull/14270)) - \[`flake8-pyi`] Improve autofix for nested and mixed type unions for `unnecessary-type-union` (`PYI055`) ([#14272](https://redirect.github.com/astral-sh/ruff/pull/14272)) - \[`flake8-pyi`] Mark fix as unsafe when type annotation contains comments for `duplicate-literal-member` (`PYI062`) ([#14268](https://redirect.github.com/astral-sh/ruff/pull/14268)) ##### Server - Use the current working directory to resolve settings from `ruff.configuration` ([#14352](https://redirect.github.com/astral-sh/ruff/pull/14352)) ##### Bug fixes - Avoid conflicts between `PLC014` (`useless-import-alias`) and `I002` (`missing-required-import`) by considering `lint.isort.required-imports` for `PLC014` ([#14287](https://redirect.github.com/astral-sh/ruff/pull/14287)) - \[`flake8-type-checking`] Skip quoting annotation if it becomes invalid syntax (`TCH001`) - \[`flake8-pyi`] Avoid using `typing.Self` in stub files pre-Python 3.11 (`PYI034`) ([#14230](https://redirect.github.com/astral-sh/ruff/pull/14230)) - \[`flake8-pytest-style`] Flag `pytest.raises` call with keyword argument `expected_exception` (`PT011`) ([#14298](https://redirect.github.com/astral-sh/ruff/pull/14298)) - \[`flake8-simplify`] Infer "unknown" truthiness for literal iterables whose items are all unpacks (`SIM222`) ([#14263](https://redirect.github.com/astral-sh/ruff/pull/14263)) - \[`flake8-type-checking`] Fix false positives for `typing.Annotated` (`TCH001`) ([#14311](https://redirect.github.com/astral-sh/ruff/pull/14311)) - \[`pylint`] Allow `await` at the top-level scope of a notebook (`PLE1142`) ([#14225](https://redirect.github.com/astral-sh/ruff/pull/14225)) - \[`pylint`] Fix miscellaneous issues in `await-outside-async` detection (`PLE1142`) ([#14218](https://redirect.github.com/astral-sh/ruff/pull/14218)) - \[`pyupgrade`] Avoid applying PEP 646 rewrites in invalid contexts (`UP044`) ([#14234](https://redirect.github.com/astral-sh/ruff/pull/14234)) - \[`pyupgrade`] Detect permutations in redundant open modes (`UP015`) ([#14255](https://redirect.github.com/astral-sh/ruff/pull/14255)) - \[`refurb`] Avoid triggering `hardcoded-string-charset` for reordered sets (`FURB156`) ([#14233](https://redirect.github.com/astral-sh/ruff/pull/14233)) - \[`refurb`] Further special cases added to `verbose-decimal-constructor` (`FURB157`) ([#14216](https://redirect.github.com/astral-sh/ruff/pull/14216)) - \[`refurb`] Use `UserString` instead of non-existent `UserStr` (`FURB189`) ([#14209](https://redirect.github.com/astral-sh/ruff/pull/14209)) - \[`ruff`] Avoid treating lowercase letters as `# noqa` codes (`RUF100`) ([#14229](https://redirect.github.com/astral-sh/ruff/pull/14229)) - \[`ruff`] Do not report when `Optional` has no type arguments (`RUF013`) ([#14181](https://redirect.github.com/astral-sh/ruff/pull/14181)) ##### Documentation - Add "Notebook behavior" section for `F704`, `PLE1142` ([#14266](https://redirect.github.com/astral-sh/ruff/pull/14266)) - Document comment policy around fix safety ([#14300](https://redirect.github.com/astral-sh/ruff/pull/14300)) ### [`v0.7.3`](https://redirect.github.com/astral-sh/ruff/blob/HEAD/CHANGELOG.md#073) [Compare Source](https://redirect.github.com/astral-sh/ruff/compare/0.7.2...0.7.3) ##### Preview features - Formatter: Disallow single-line implicit concatenated strings ([#13928](https://redirect.github.com/astral-sh/ruff/pull/13928)) - \[`flake8-pyi`] Include all Python file types for `PYI006` and `PYI066` ([#14059](https://redirect.github.com/astral-sh/ruff/pull/14059)) - \[`flake8-simplify`] Implement `split-of-static-string` (`SIM905`) ([#14008](https://redirect.github.com/astral-sh/ruff/pull/14008)) - \[`refurb`] Implement `subclass-builtin` (`FURB189`) ([#14105](https://redirect.github.com/astral-sh/ruff/pull/14105)) - \[`ruff`] Improve diagnostic messages and docs (`RUF031`, `RUF032`, `RUF034`) ([#14068](https://redirect.github.com/astral-sh/ruff/pull/14068)) ##### Rule changes - Detect items that hash to same value in duplicate sets (`B033`, `PLC0208`) ([#14064](https://redirect.github.com/astral-sh/ruff/pull/14064)) - \[`eradicate`] Better detection of IntelliJ language injection comments (`ERA001`) ([#14094](https://redirect.github.com/astral-sh/ruff/pull/14094)) - \[`flake8-pyi`] Add autofix for `docstring-in-stub` (`PYI021`) ([#14150](https://redirect.github.com/astral-sh/ruff/pull/14150)) - \[`flake8-pyi`] Update `duplicate-literal-member` (`PYI062`) to alawys provide an autofix ([#14188](https://redirect.github.com/astral-sh/ruff/pull/14188)) - \[`pyflakes`] Detect items that hash to same value in duplicate dictionaries (`F601`) ([#14065](https://redirect.github.com/astral-sh/ruff/pull/14065)) - \[`ruff`] Fix false positive for decorators (`RUF028`) ([#14061](https://redirect.github.com/astral-sh/ruff/pull/14061)) ##### Bug fixes - Avoid parsing joint rule codes as distinct codes in `# noqa` ([#12809](https://redirect.github.com/astral-sh/ruff/pull/12809)) - \[`eradicate`] ignore `# language=` in commented-out-code rule (ERA001) ([#14069](https://redirect.github.com/astral-sh/ruff/pull/14069)) - \[`flake8-bugbear`] - do not run `mutable-argument-default` on stubs (`B006`) ([#14058](https://redirect.github.com/astral-sh/ruff/pull/14058)) - \[`flake8-builtins`] Skip lambda expressions in `builtin-argument-shadowing (A002)` ([#14144](https://redirect.github.com/astral-sh/ruff/pull/14144)) - \[`flake8-comprehension`] Also remove trailing comma while fixing `C409` and `C419` ([#14097](https://redirect.github.com/astral-sh/ruff/pull/14097)) - \[`flake8-simplify`] Allow `open` without context manager in `return` statement (`SIM115`) ([#14066](https://redirect.github.com/astral-sh/ruff/pull/14066)) - \[`pylint`] Respect hash-equivalent literals in `iteration-over-set` (`PLC0208`) ([#14063](https://redirect.github.com/astral-sh/ruff/pull/14063)) - \[`pylint`] Update known dunder methods for Python 3.13 (`PLW3201`) ([#14146](https://redirect.github.com/astral-sh/ruff/pull/14146)) - \[`pyupgrade`] - ignore kwarg unpacking for `UP044` ([#14053](https://redirect.github.com/astral-sh/ruff/pull/14053)) - \[`refurb`] Parse more exotic decimal strings in `verbose-decimal-constructor` (`FURB157`) ([#14098](https://redirect.github.com/astral-sh/ruff/pull/14098)) ##### Documentation - Add links to missing related options within rule documentations ([#13971](https://redirect.github.com/astral-sh/ruff/pull/13971)) - Add rule short code to mkdocs tags to allow searching via rule codes ([#14040](https://redirect.github.com/astral-sh/ruff/pull/14040))Configuration
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