## Summary
- Expand some docs where they're unclear about the motivation, or assume
some knowledge that hasn't been introduced yet
- Add more links to external docs
- Rename PYI063 from `PrePep570PositionalArgument` to
`Pep484StylePositionalOnlyParameter`
- Rename the file `parenthesize_logical_operators.rs` to
`parenthesize_chained_operators.rs`, since the rule is called
`ParenthesizeChainedOperators`, not `ParenthesizeLogicalOperators`
## Test Plan
`cargo test`
## Summary
These rules were implemented in January, have been very stable, and have
no open issues about them. They were highly requested by the community
prior to being implemented. Let's stabilise them!
## Test Plan
Ecosystem check on this PR.
## Summary
Follow-up to #14371, this PR simplifies the visitor logic for list
expressions to remove the state management. We just need to make sure
that we visit the nested expressions using the `QuoteAnnotator` and not
the `Generator`. This is similar to what's being done for binary
expressions.
As per the
[grammar](https://typing.readthedocs.io/en/latest/spec/annotations.html#grammar-token-expression-grammar-annotation_expression),
list expressions can be present which can contain other type expressions
(`Callable`):
```
| <Callable> '[' <Concatenate> '[' (type_expression ',')+
(name | '...') ']' ',' type_expression ']'
(where name must be a valid in-scope ParamSpec)
| <Callable> '[' '[' maybe_unpacked (',' maybe_unpacked)*
']' ',' type_expression ']'
```
## Test Plan
`cargo insta test`
## Summary
Resolves#12616.
## Test Plan
`cargo nextest run` and `cargo insta test`.
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
Resolves#14378.
## Test Plan
`cargo nextest run` and `cargo insta test`.
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
Implements `redundant-bool-literal`
## Test Plan
<!-- How was it tested? -->
`cargo test`
The ecosystem results are all correct, but for `Airflow` the rule is not
relevant due to the use of overloading (and is marked as unsafe
correctly).
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
This PR adds autofix for `redundant-numeric-union` (`PYI041`)
There are some comments below to explain the reasoning behind some
choices that might help review.
<!-- What's the purpose of the change? What does it do, and why? -->
Resolves part of https://github.com/astral-sh/ruff/issues/14185.
## Test Plan
<!-- How was it tested? -->
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
This PR adds corrected handling of list expressions to the `Visitor`
implementation of `QuotedAnnotator` in `flake8_type_checking::helpers`.
Closes#14368
Fix: #13934
## Summary
Current implementation has a bug when the current annotation contains a
string with single and double quotes.
TL;DR: I think these cases happen less than other use cases of Literal.
So instead of fixing them we skip the fix in those cases.
One of the problematic cases:
```
from typing import Literal
from third_party import Type
def error(self, type1: Type[Literal["'"]]):
pass
```
The outcome is:
```
- def error(self, type1: Type[Literal["'"]]):
+ def error(self, type1: "Type[Literal[''']]"):
```
While it should be:
```
"Type[Literal['\'']"
```
The solution in this case is that we check if there’s any quotes same as
the quote style we want to use for this Literal parameter then escape
that same quote used in the string.
Also this case is not uncommon to have:
<https://grep.app/search?current=2&q=Literal["'>
But this can get more complicated for example in case of:
```
- def error(self, type1: Type[Literal["\'"]]):
+ def error(self, type1: "Type[Literal[''']]"):
```
Here we escaped the inner quote but in the generated annotation it gets
removed. Then we flip the quote style of the Literal paramter and the
formatting is wrong.
In this case the solution is more complicated.
1. When generating the string of the source code preserve the backslash.
2. After we have the annotation check if there isn’t any escaped quote
of the same type we want to use for the Literal parameter. In this case
check if we have any `’` without `\` before them. This can get more
complicated since there can be multiple backslashes so checking for only
`\’` won’t be enough.
Another problem is when the string contains `\n`. In case of
`Type[Literal["\n"]]` we generate `'Type[Literal["\n"]]'` and both
pyright and mypy reject this annotation.
https://pyright-play.net/?code=GYJw9gtgBALgngBwJYDsDmUkQWEMoAySMApiAIYA2AUAMaXkDOjUAKoiQNqsC6AXFAB0w6tQAmJYLBKMYAfQCOAVzCk5tMChjlUjOQCNytANaMGjABYAKRiUrAANLA4BGAQHJ2CLkVIVKnABEADoogTw87gCUfNRQ8VAITIyiElKksooqahpaOih6hiZmTNa29k7w3m5sHJy%2BZFRBoeE8MXEJScxAA
## Test Plan
I added test cases for the original code in the reported issue and two
more cases for backslash and new line.
---------
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
Follow-up to #14287 : when checking that `name` is the same as `as_name`
in `import name as as_name`, we do not need to first do an early return
if `'.'` is found in `name`.
This PR handles a panic that occurs when applying unsafe fixes if a user
inserts a required import (I002) that has a "useless alias" in it, like
`import numpy as numpy`, and also selects PLC0414 (useless-import-alias)
In this case, the fixes alternate between adding the required import
statement, then removing the alias, until the recursion limit is
reached. See linked issue for an example.
Closes#14283
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
Resolves#13217.
## Test Plan
`cargo nextest run` and `cargo insta test`.
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
This PR improves the fix for `PYI055` to be able to handle nested and
mixed type unions.
It also marks the fix as unsafe when comments are present.
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
<!-- How was it tested? -->
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
`pytest-raises-too-broad (PT011)` should be raised when
`expected_exception` is provided as a keyword argument.
```python
def test_foo():
with pytest.raises(ValueError): # raises PT011
raise ValueError("Can't divide 1 by 0")
# This is minor but a valid pytest.raises call
with pytest.raises(expected_exception=ValueError): # doesn't raise PT011 but should
raise ValueError("Can't divide 1 by 0")
```
`pytest.raises` doc:
https://docs.pytest.org/en/8.3.x/reference/reference.html#pytest.raises
## Test Plan
<!-- How was it tested? -->
Unit tests
Signed-off-by: harupy <hkawamura0130@gmail.com>
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
Related to #970. Implement [`shallow-copy-environ /
W1507`](https://pylint.readthedocs.io/en/stable/user_guide/messages/warning/shallow-copy-environ.html).
## Test Plan
<!-- How was it tested? -->
Unit test
---------
Co-authored-by: Simon Brugman <sbrugman@users.noreply.github.com>
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
The implicit namespace package rule currently fails to detect cases like
the following:
```text
foo/
├── __init__.py
└── bar/
└── baz/
└── __init__.py
```
The problem is that we detect a root at `foo`, and then an independent
root at `baz`. We _would_ detect that `bar` is an implicit namespace
package, but it doesn't contain any files! So we never check it, and
have no place to raise the diagnostic.
This PR adds detection for these kinds of nested packages, and augments
the `INP` rule to flag the `__init__.py` file above with a specialized
message. As a side effect, I've introduced a dedicated `PackageRoot`
struct which we can pass around in lieu of Yet Another `Path`.
For now, I'm only enabling this in preview (and the approach doesn't
affect any other rules). It's a bug fix, but it may end up expanding the
rule.
Closes https://github.com/astral-sh/ruff/issues/13519.
## Summary
It's only safe to enforce the `x in "1234567890"` case if `x` is exactly
one character, since the set on the right has been reordered as compared
to `string.digits`. We can't know if `x` is exactly one character unless
it's a literal. And if it's a literal, well, it's kind of silly code in
the first place?
Closes https://github.com/astral-sh/ruff/issues/13802.
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
Fix `await-outside-async` to allow `await` at the top-level scope of a
notebook.
```python
# foo.ipynb
await asyncio.sleep(1) # should be allowed
```
## Test Plan
<!-- How was it tested? -->
A unit test
## Summary
Resolves#13833.
## Test Plan
`cargo nextest run` and `cargo insta test`.
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
This PR accounts for further subtleties in `Decimal` parsing:
- Strings which are empty modulo underscores and surrounding whitespace
are skipped
- `Decimal("-0")` is skipped
- `Decimal("{integer literal that is longer than 640 digits}")` are
skipped (see linked issue for explanation)
NB: The snapshot did not need to be updated since the new test cases are
"Ok" instances and added below the diff.
Closes#14204
## Summary
Implementation for one of the rules in
https://github.com/astral-sh/ruff/issues/1348
Refurb only deals only with classes with a single base, however the rule
is valid for any base.
(`str, Enum` is common prior to `StrEnum`)
## Test Plan
`cargo test`
---------
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
Flake8-builtins provides two checks for arguments (really, parameters)
of a function shadowing builtins: A002 checks function definitions, and
A006 checks lambda expressions. This PR ensures that A002 is restricted
to functions rather than lambda expressions.
Closes#14135 .
FURB157 suggests replacing expressions like `Decimal("123")` with
`Decimal(123)`. This PR extends the rule to cover cases where the input
string to `Decimal` can be easily transformed into an integer literal.
For example:
```python
Decimal("1__000") # fix: `Decimal(1000)`
```
Note: we do not implement the full decimal parsing logic from CPython on
the grounds that certain acceptable string inputs to the `Decimal`
constructor may be presumed purposeful on the part of the developer. For
example, as in the linked issue, `Decimal("١٢٣")` is valid and equal to
`Decimal(123)`, but we do not suggest a replacement in this case.
Closes#13807
## Summary
The `commented-out-code` rule (ERA001) from `eradicate` is currently
flagging a very common idiom that marks Python strings as another
language, to help with syntax highlighting:
This PR adds this idiom to the list of allowed exceptions to the rule.
## Test Plan
I've added some additional test cases.
## Summary
Like https://github.com/astral-sh/ruff/pull/14063, but ensures that we
catch cases like `{1, True}` in which the items hash to the same value
despite not being identical.
## Summary
Closes https://github.com/astral-sh/ruff/issues/13944
## Test Plan
Standard snapshot testing
flake8-simplify surprisingly only has a single test case
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
This PR updates the fix generation logic for auto-quoting an annotation
to generate an edit even when there's a quote character present.
The logic uses the visitor pattern, maintaining it's state on where it
is and generating the string value one node at a time. This can be
considered as a specialized form of `Generator`. The state required to
maintain is whether we're currently inside a `typing.Literal` or
`typing.Annotated` because the string value in those types should not be
un-quoted i.e., `Generic[Literal["int"]]` should become
`"Generic[Literal['int']]`, the quotes inside the `Literal` should be
preserved.
Fixes: https://github.com/astral-sh/ruff/issues/9137
## Test Plan
Add various test cases to validate this change, validate the snapshots.
There are no ecosystem changes to go through.
---------
Signed-off-by: Shaygan <hey@glyphack.com>
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
Remove unnecessary uses of `.as_ref()`, `.iter()`, `&**` and similar, mostly in situations when iterating over variables. Many of these changes are only possible following #13826, when we bumped our MSRV to 1.80: several useful implementations on `&Box<[T]>` were only stabilised in Rust 1.80. Some of these changes we could have done earlier, however.
## Summary
This pull request resolves some rule thrashing identified in #12427 by
allowing for unused arguments when using `NotImplementedError` with a
variable per [this
comment](https://github.com/astral-sh/ruff/issues/12427#issuecomment-2384727468).
**Note**
This feels a little heavy-handed / edge-case-prone. So, to be clear, I'm
happy to scrap this code and just update the docs to communicate that
`abstractmethod` and friends should be used in this scenario (or
similar). Just let me know what you'd like done!
fixes: #12427
## Test Plan
I added a test-case to the existing `ARG.py` file and ran...
```sh
cargo run -p ruff -- check crates/ruff_linter/resources/test/fixtures/flake8_unused_arguments/ARG.py --no-cache --preview --select ARG002
```
---------
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
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## Summary
Treat async generators as "await" in ASYNC100.
Fixes#13637
## Test Plan
Updated snapshot
## Summary
Resolves https://github.com/astral-sh/ruff/issues/9962 by allowing a
configuration setting `allowed-unused-imports`
TODO:
- [x] Figure out the correct name and place for the setting; currently,
I have added it top level.
- [x] The comparison is pretty naive. I tried using `glob::Pattern` but
couldn't get it to work in the configuration.
- [x] Add tests
- [x] Update documentations
## Test Plan
`cargo test`
Closes https://github.com/astral-sh/ruff/issues/13545
As described in the issue, we move comments before the inner `if`
statement to before the newly constructed `elif` statement (previously
`else`).
## Summary
fix#13602
Currently, `UP043` only applies to typing.Generator, but it should also
support collections.abc.Generator.
This update ensures `UP043` correctly handles both
`collections.abc.Generator` and `collections.abc.AsyncGenerator`
### UP043
> `UP043`
> Python 3.13 introduced the ability for type parameters to specify
default values. As such, the default type arguments for some types in
the standard library (e.g., Generator, AsyncGenerator) are now optional.
> Omitting type parameters that match the default values can make the
code more concise and easier to read.
```py
Generator[int, None, None] -> Generator[int]
```
## Summary
...and remove periods from messages that don't span more than a single
sentence.
This is more consistent with how we present user-facing messages in uv
(which has a defined style guide).
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
There was a typo in the links of the docs of PTH116, where Path.stat
used to link to Path.group.
Another rule, PTH202, does it correctly:
ec72e675d9/crates/ruff_linter/src/rules/flake8_use_pathlib/rules/os_path_getsize.rs (L33)
This PR only fixes a one word typo.
## Test Plan
<!-- How was it tested? -->
I did not test that the doc generation framework picked up these
changes, I assume it will do it successfully.
Related to https://github.com/astral-sh/ruff/issues/13524
Doesn't offer a valid fix, opting to instead just not offer a fix at
all. If someone points me to a good way to handle parenthesis here I'm
down to try to fix the fix separately, but it looks quite hard.
Closes https://github.com/astral-sh/ruff/issues/13266
Avoids false negatives for shadowed bindings that aren't actually
references to the loop variable. There are some shadowed bindings we
need to support still, e.g., `del` requires the loop variable to exist.
## Summary
This PR adds an experimental Ruff subcommand to generate dependency
graphs based on module resolution.
A few highlights:
- You can generate either dependency or dependent graphs via the
`--direction` command-line argument.
- Like Pants, we also provide an option to identify imports from string
literals (`--detect-string-imports`).
- Users can also provide additional dependency data via the
`include-dependencies` key under `[tool.ruff.import-map]`. This map uses
file paths as keys, and lists of strings as values. Those strings can be
file paths or globs.
The dependency resolution uses the red-knot module resolver which is
intended to be fully spec compliant, so it's also a chance to expose the
module resolver in a real-world setting.
The CLI is, e.g., `ruff graph build ../autobot`, which will output a
JSON map from file to files it depends on for the `autobot` project.
## Summary
Follow-up from #13268, this PR updates the test case to use
`assert_snapshot` now that the output is limited to only include the
rules with diagnostics.
## Test Plan
`cargo insta test`
## Summary
Follow-up to #13147, this PR implements the `AstNode` for `Identifier`.
This makes it easier to create the `NodeKey` in red knot because it uses
a generic method to construct the key from `AnyNodeRef` and is important
for definitions that are created only on identifiers instead of
`ExprName`.
## Test Plan
`cargo test` and `cargo clippy`
This PR contains the following updates:
| Package | Type | Update | Change |
|---|---|---|---|
| [quick-junit](https://redirect.github.com/nextest-rs/quick-junit) |
workspace.dependencies | minor | `0.4.0` -> `0.5.0` |
---
### Release Notes
<details>
<summary>nextest-rs/quick-junit (quick-junit)</summary>
###
[`v0.5.0`](https://redirect.github.com/nextest-rs/quick-junit/blob/HEAD/CHANGELOG.md#050---2024-09-01)
[Compare
Source](https://redirect.github.com/nextest-rs/quick-junit/compare/quick-junit-0.4.0...quick-junit-0.5.0)
##### Changed
- The `Output` type, which strips invalid XML characters from a string,
has been renamed to
`XmlString`.
- All internal storage now uses `XmlString` rather than `String`.
</details>
---
### Configuration
📅 **Schedule**: Branch creation - "before 4am on Monday" (UTC),
Automerge - At any time (no schedule defined).
🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.
♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.
🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.
---
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this box
---
This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/astral-sh/ruff).
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---------
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Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
## Summary
The `SequenceIndexVisitor` currently does not recurse into
subexpressions of subscripts when searching for subscript accesses that
would trigger this rule. That means that we don't currently detect
violations of the rule on snippets like this:
```py
data = {"a": 1, "b": 2}
column_names = ["a", "b"]
for index, column_name in enumerate(column_names):
_ = data[column_names[index]]
```
Fixes#13183
## Test Plan
`cargo test -p ruff_linter`
## Summary
Extends deletions for RUF100, deleting trailing text from noqa
directives, while preserving upcoming comments on the same line if any.
In cases where it deletes a comment up to another comment on the same
line, the whitespace between them is now shown to be in the autofix in
the diagnostic as well. Leading whitespace before the removed comment is
not, though.
Fixes#12251
## Test Plan
`cargo test`
## Summary
Now that Ruff provides a formatter, there is no need to rely on Black to
check that the docs are formatted correctly in
`check_docs_formatted.py`. This PR swaps out Black for the Ruff
formatter and updates inconsistencies between the two.
This PR will be a precursor to another PR
([branch](https://github.com/calumy/ruff/tree/format-pyi-in-docs)),
updating the `check_docs_formatted.py` script to check for pyi files,
fixing #11568.
## Test Plan
- CI to check that the docs are formatted correctly using the updated
script.
## Summary
As suggested by @MichaReiser in
https://github.com/astral-sh/ruff/pull/12886#pullrequestreview-2237679793,
this adds an exemption to `RUF027` for `fastAPI` paths, which require
template strings rather than eagerly evaluated f-strings.
## Test Plan
I added a fixture that causes Ruff to emit a false-positive error on
`main` but no longer does with this PR.
## Summary
This PR is a pure refactor to simplify some of the logic for `RUF027`.
This will make it easier to file some followup PRs to help reduce the
false positives from this rule. I'm separating the refactor out into a
separate PR so it's easier to review, and so I can double-check from the
ecosystem report that this doesn't have any user-facing impact.
## Test Plan
`cargo test -p ruff_linter --lib`
This adds the `fast-api-unused-path-parameter` lint rule, as described
in #12632.
I'm still pretty new to rust, so the code can probably be improved, feel
free to tell me if there's any changes i should make.
Also, i needed to add the `add_parameter` edit function, not sure if it
was in the scope of the PR or if i should've made another one.
List and set comprehensions using `async for` cannot be replaced with
underlying generators; this PR modifies C419 to skip such
comprehensions.
Closes#12891.
## Summary
Occasionally, we receive bug reports that imports in `src` directories
aren't correctly detected. The root of the problem is that we default to
`src = ["."]`, so users have to set `src = ["src"]` explicitly. This PR
extends the default to cover _both_ of them: `src = [".", "src"]`.
Closes https://github.com/astral-sh/ruff/issues/12454.
## Test Plan
I replicated the structure described in
https://github.com/astral-sh/ruff/issues/12453, and verified that the
imports were considered sorted, but that adding `src = ["."]` showed an
error.
## Summary
This PR adds support for VS Code specific cell metadata to consider when
collecting valid code cells.
For context, Ruff only runs on valid code cells. These are the code
cells that doesn't contain cell magics. Previously, Ruff only used the
notebook's metadata to determine whether it's a Python notebook. But, in
VS Code, a notebook's preferred language might be Python but it could
still contain code cells for other languages. This can be determined
with the `metadata.vscode.languageId` field.
### References:
* https://code.visualstudio.com/docs/languages/identifiers
* e6c009a3d4/extensions/ipynb/src/serializers.ts (L104-L107)
*
e6c009a3d4/extensions/ipynb/src/serializers.ts (L117-L122)
This brings us one step closer to fixing #12281.
## Test Plan
Add test cases for `is_valid_python_code_cell` and an integration test
case which showcase running it end to end. The test notebook contains a
JavaScript code cell and a Python code cell.
## Summary
This PR fixes a bug in the semantic model where it would evaluate the
default parameter value in the type parameter scope. For example,
```py
def foo[T1: int](a = T1):
pass
```
Here, the `T1` in `a = T1` is undefined but Ruff doesn't flag it
(https://play.ruff.rs/ba2f7c2f-4da6-417e-aa2a-104aa63e6d5e).
The fix here is to evaluate the default parameter value in the
_enclosing_ scope instead.
## Test Plan
Add a test case which includes the above code under `F821`
(`undefined-name`) and validate the snapshot.
## Summary
See #12703. This only addresses the first bullet point, adding a space
after the comma in the suggested fix from list/tuple to string.
## Test Plan
Updated the snapshots and compared.
In most cases we should suggest a ternary operator, but there are three
edge cases where a binary operator is more appropriate.
Given an if-else block of the form
```python
if test:
target_var = body_value
else:
target_var = else_value
```
This PR updates the check for SIM108 to the following:
- If `test == body_value` and preview enabled, suggest to replace with
`target_var = test or else_value`
- If `test == not body_value` and preview enabled, suggest to replace
with `target_var = body_value and else_value`
- If `not test == body_value` and preview enabled, suggest to replace
with `target_var = body_value and else_value`
- Otherwise, suggest to replace with `target_var = body_value if test
else else_value`
Closes#12189.
## Summary
Adding parentheses to a tuple in a subscript with elements that include
slice expressions causes a syntax error. For example, `d[(1,2,:)]` is a
syntax error.
So, when `lint.ruff.parenthesize-tuple-in-subscript = true` and the
tuple includes a slice expression, we skip this check and fix.
Closes#12766.
> ~Builtins are also more efficient than `for` loops.~
Let's not promise performance because this code transformation does not
deliver.
Benchmark written by @dcbaker
> `any()` seems to be about 1/3 as fast (Python 3.11.9, NixOS):
```python
loop = 'abcdef'.split()
found = 'f'
nfound = 'g'
def test1():
for x in loop:
if x == found:
return True
return False
def test2():
return any(x == found for x in loop)
def test3():
for x in loop:
if x == nfound:
return True
return False
def test4():
return any(x == nfound for x in loop)
if __name__ == "__main__":
import timeit
print('for loop (found) :', timeit.timeit(test1))
print('for loop (not found):', timeit.timeit(test3))
print('any() (found) :', timeit.timeit(test2))
print('any() (not found) :', timeit.timeit(test4))
```
```
for loop (found) : 0.051076093994197436
for loop (not found): 0.04388196699437685
any() (found) : 0.15422860698890872
any() (not found) : 0.15568504799739458
```
I have retested with longer lists and on multiple Python versions with
similar results.
Implements the new fixable lint rule `RUF031` which checks for the use or omission of parentheses around tuples in subscripts, depending on the setting `lint.ruff.parenthesize-tuple-in-getitem`. By default, the use of parentheses is considered a violation.
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## Summary
Resolves#12636
Consider docstrings which begin with the word "Returns" as having
satisfactorily documented they're returns. For example
```python
def f():
"""Returns 1."""
return 1
```
is valid.
## Test Plan
Added example to test fixture.
---------
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
## Summary
Removes set comprehension as a violation for `sum` when checking `C419`,
because set comprehension may de-duplicate entries in a generator,
thereby modifying the value of the sum.
Closes#12690.
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