ruff/changelogs/0.7.x.md

Changelog 0.7.x

0.7.0

Check out the blog post for a migration guide and overview of the changes!

Breaking changes

• The pytest rules PT001 and PT023 now default to omitting the decorator parentheses when there are no arguments (#12838, #13292). This was a change that we attempted to make in Ruff v0.6.0, but only partially made due to an error on our part. See the blog post for more details.
• The useless-try-except rule (in our tryceratops category) has been recoded from TRY302 to TRY203 (#13502). This ensures Ruff's code is consistent with the same rule in the tryceratops linter.
• The lint.allow-unused-imports setting has been removed (#13677). Use lint.pyflakes.allow-unused-imports instead.

Formatter preview style

• Normalize implicit concatenated f-string quotes per part (#13539)

Preview linter features

• [refurb] implement hardcoded-string-charset (FURB156) (#13530)
• [refurb] Count codepoints not bytes for slice-to-remove-prefix-or-suffix (FURB188) (#13631)

Rule changes

• [pylint] Mark PLE1141 fix as unsafe (#13629)
• [flake8-async] Consider async generators to be "checkpoints" for cancel-scope-no-checkpoint (ASYNC100) (#13639)
• [flake8-bugbear] Do not suggest setting parameter strict= to False in B905 diagnostic message (#13656)
• [flake8-todos] Only flag the word "TODO", not words starting with "todo" (TD006) (#13640)
• [pycodestyle] Fix whitespace-related false positives and false negatives inside type-parameter lists (E231, E251) (#13704)
• [flake8-simplify] Stabilize preview behavior for SIM115 so that the rule can detect files being opened from a wider range of standard-library functions (#12959).

CLI

• Add explanation of fixable in --statistics command (#13774)

Bug fixes

• [pyflakes] Allow ipytest cell magic (F401) (#13745)
• [flake8-use-pathlib] Fix PTH123 false positive when open is passed a file descriptor (#13616)
• [flake8-bandit] Detect patterns from multi line SQL statements (S608) (#13574)
• [flake8-pyi] - Fix dropped expressions in PYI030 autofix (#13727)

0.7.1

Preview features

• Fix E221 and E222 to flag missing or extra whitespace around == operator (#13890)
• Formatter: Alternate quotes for strings inside f-strings in preview (#13860)
• Formatter: Join implicit concatenated strings when they fit on a line (#13663)
• [pylint] Restrict iteration-over-set to only work on sets of literals (PLC0208) (#13731)

Rule changes

• [flake8-type-checking] Support auto-quoting when annotations contain quotes (#11811)

Server

• Avoid indexing the workspace for single-file mode (#13770)

Bug fixes

• Make ARG002 compatible with EM101 when raising NotImplementedError (#13714)

Other changes

• Introduce more Docker tags for Ruff (similar to uv) (#13274)

0.7.2

Preview features

• Fix formatting of single with-item with trailing comment (#14005)
• [pyupgrade] Add PEP 646 Unpack conversion to * with fix (UP044) (#13988)

Rule changes

• Regenerate known_stdlibs.rs with stdlibs 2024.10.25 (#13963)
• [flake8-no-pep420] Skip namespace package enforcement for PEP 723 scripts (INP001) (#13974)

Server

• Fix server panic when undoing an edit (#14010)

Bug fixes

• Fix issues in discovering ruff in pip build environments (#13881)
• [flake8-type-checking] Fix false positive for singledispatchmethod (TCH003) (#13941)
• [flake8-type-checking] Treat return type of singledispatch as runtime-required (TCH003) (#13957)

Documentation

• [flake8-simplify] Include caveats of enabling if-else-block-instead-of-if-exp (SIM108) (#14019)

0.7.3

Preview features

• Formatter: Disallow single-line implicit concatenated strings (#13928)
• [flake8-pyi] Include all Python file types for PYI006 and PYI066 (#14059)
• [flake8-simplify] Implement split-of-static-string (SIM905) (#14008)
• [refurb] Implement subclass-builtin (FURB189) (#14105)
• [ruff] Improve diagnostic messages and docs (RUF031, RUF032, RUF034) (#14068)

Rule changes

• Detect items that hash to same value in duplicate sets (B033, PLC0208) (#14064)
• [eradicate] Better detection of IntelliJ language injection comments (ERA001) (#14094)
• [flake8-pyi] Add autofix for docstring-in-stub (PYI021) (#14150)
• [flake8-pyi] Update duplicate-literal-member (PYI062) to always provide an autofix (#14188)
• [pyflakes] Detect items that hash to same value in duplicate dictionaries (F601) (#14065)
• [ruff] Fix false positive for decorators (RUF028) (#14061)

Bug fixes

• Avoid parsing joint rule codes as distinct codes in # noqa (#12809)
• [eradicate] ignore # language= in commented-out-code rule (ERA001) (#14069)
• [flake8-bugbear] - do not run mutable-argument-default on stubs (B006) (#14058)
• [flake8-builtins] Skip lambda expressions in builtin-argument-shadowing (A002) (#14144)
• [flake8-comprehension] Also remove trailing comma while fixing C409 and C419 (#14097)
• [flake8-simplify] Allow open without context manager in return statement (SIM115) (#14066)
• [pylint] Respect hash-equivalent literals in iteration-over-set (PLC0208) (#14063)
• [pylint] Update known dunder methods for Python 3.13 (PLW3201) (#14146)
• [pyupgrade] - ignore kwarg unpacking for UP044 (#14053)
• [refurb] Parse more exotic decimal strings in verbose-decimal-constructor (FURB157) (#14098)

Documentation

• Add links to missing related options within rule documentations (#13971)
• Add rule short code to mkdocs tags to allow searching via rule codes (#14040)

0.7.4

Preview features

• [flake8-datetimez] Detect usages of datetime.max/datetime.min (DTZ901) (#14288)
• [flake8-logging] Implement root-logger-calls (LOG015) (#14302)
• [flake8-no-pep420] Detect empty implicit namespace packages (INP001) (#14236)
• [flake8-pyi] Add "replace with Self" fix (PYI019) (#14238)
• [perflint] Implement quick-fix for manual-list-comprehension (PERF401) (#13919)
• [pylint] Implement shallow-copy-environ (W1507) (#14241)
• [ruff] Implement none-not-at-end-of-union (RUF036) (#14314)
• [ruff] Implementation unsafe-markup-call from flake8-markupsafe plugin (RUF035) (#14224)
• [ruff] Report problems for attrs dataclasses (RUF008, RUF009) (#14327)

Rule changes

• [flake8-boolean-trap] Exclude dunder methods that define operators (FBT001) (#14203)
• [flake8-pyi] Add "replace with Self" fix (PYI034) (#14217)
• [flake8-pyi] Always autofix duplicate-union-members (PYI016) (#14270)
• [flake8-pyi] Improve autofix for nested and mixed type unions for unnecessary-type-union (PYI055) (#14272)
• [flake8-pyi] Mark fix as unsafe when type annotation contains comments for duplicate-literal-member (PYI062) (#14268)

Server

• Use the current working directory to resolve settings from ruff.configuration (#14352)

Bug fixes

• Avoid conflicts between PLC014 (useless-import-alias) and I002 (missing-required-import) by considering lint.isort.required-imports for PLC014 (#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)
• [flake8-pytest-style] Flag pytest.raises call with keyword argument expected_exception (PT011) (#14298)
• [flake8-simplify] Infer "unknown" truthiness for literal iterables whose items are all unpacks (SIM222) (#14263)
• [flake8-type-checking] Fix false positives for typing.Annotated (TCH001) (#14311)
• [pylint] Allow await at the top-level scope of a notebook (PLE1142) (#14225)
• [pylint] Fix miscellaneous issues in await-outside-async detection (PLE1142) (#14218)
• [pyupgrade] Avoid applying PEP 646 rewrites in invalid contexts (UP044) (#14234)
• [pyupgrade] Detect permutations in redundant open modes (UP015) (#14255)
• [refurb] Avoid triggering hardcoded-string-charset for reordered sets (FURB156) (#14233)
• [refurb] Further special cases added to verbose-decimal-constructor (FURB157) (#14216)
• [refurb] Use UserString instead of non-existent UserStr (FURB189) (#14209)
• [ruff] Avoid treating lowercase letters as # noqa codes (RUF100) (#14229)
• [ruff] Do not report when Optional has no type arguments (RUF013) (#14181)

Documentation

• Add "Notebook behavior" section for F704, PLE1142 (#14266)
• Document comment policy around fix safety (#14300)