Summary
--
This PR reimplements
[load-before-global-declaration
(PLE0118)](https://docs.astral.sh/ruff/rules/load-before-global-declaration/)
as a semantic syntax error.
I added a `global` method to the `SemanticSyntaxContext` trait to make
this very easy, at least in ruff. Does red-knot have something similar?
If this approach will also work in red-knot, I think some of the other
PLE rules are also compile-time errors in CPython, PLE0117 in
particular. 0115 and 0116 also mention `SyntaxError`s in their docs, but
I haven't confirmed them in the REPL yet.
Test Plan
--
Existing linter tests for PLE0118. I think this actually can't be tested
very easily in an inline test because the `TestContext` doesn't have a
real way to track globals.
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
Summary
--
Fixes https://github.com/astral-sh/ruff/issues/16520 by flagging single,
starred expressions in `return`, `yield`, and
`for` statements.
I thought `yield from` would also be included here, but that error is
emitted by
the CPython parser:
```pycon
>>> ast.parse("def f(): yield from *x")
Traceback (most recent call last):
File "<python-input-214>", line 1, in <module>
ast.parse("def f(): yield from *x")
~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.13/ast.py", line 54, in parse
return compile(source, filename, mode, flags,
_feature_version=feature_version, optimize=optimize)
File "<unknown>", line 1
def f(): yield from *x
^
SyntaxError: invalid syntax
```
And we also already catch it in our parser.
Test Plan
--
New inline tests and updates to existing tests.
## Summary
Adds import `numpy.typing as npt` to `default in
flake8-import-conventions.aliases`
Resolves#17028
## Test Plan
Manually ran local ruff on the altered fixture and also ran `cargo test`
## Summary
I don't remember exactly when we made `Identifier` a node but it is now
considered a node (it implements `AnyNodeRef`, it has a range). However,
we never updated
the `SourceOrderVisitor` to visit identifiers because we never had a use
case for it and visiting new nodes can change how the formatter
associates comments (breaking change!).
This PR updates the `SourceOrderVisitor` to visit identifiers and
changes the formatter comment visitor to skip identifiers (updating the
visitor might be desired because it could help simplifying some comment
placement logic but this is out of scope for this PR).
## Test Plan
Tests, updated snapshot tests
This PR contains the scaffolding for a new control flow graph
implementation, along with its application to the `unreachable` rule. At
the moment, the implementation is a maximal over-approximation: no
control flow is modeled and all statements are counted as reachable.
With each additional statement type we support, this approximation will
improve.
So this PR just contains:
- A `ControlFlowGraph` struct and builder
- Support for printing the flow graph as a Mermaid graph
- Snapshot tests for the actual graphs
- (a very bad!) reimplementation of `unreachable` using the new structs
- Snapshot tests for `unreachable`
# Instructions for Viewing Mermaid snapshots
Unfortunately I don't know how to convince GitHub to render the Mermaid
graphs in the snapshots. However, you can view these locally in VSCode
if you install an extension that supports Mermaid graphs in Markdown,
and then add this to your `settings.json`:
```json
"files.associations": {
"*.md.snap": "markdown",
}
```
<!--
Thank you for contributing to Ruff! To help us out with reviewing,
please consider the following:
- Does this pull request include a summary of the change? (See below.)
- Does this pull request include a descriptive title?
- Does this pull request include references to any relevant issues?
-->
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
* Combine AIR302 matches
* Found a few errors. Will be fixed in another PR
## Test Plan
<!-- How was it tested? -->
This PR does not change anything. The existing testing fixture should
work as it used to be
<!--
Thank you for contributing to Ruff! To help us out with reviewing,
please consider the following:
- Does this pull request include a summary of the change? (See below.)
- Does this pull request include a descriptive title?
- Does this pull request include references to any relevant issues?
-->
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
* The following paths are wrong
* `airflow.providers.amazon.auth_manager.avp.entities` should be
`airflow.providers.amazon.aws.auth_manager.avp.entities`
* `["airflow", "datasets", "manager", "dataset_manager"]` should be
fixed as `airflow.assets.manager` but not
`airflow.assets.manager.asset_manager`
* `["airflow", "datasets.manager", "DatasetManager"]` should be `
["airflow", "datasets", "manager", "DatasetManager"]` instead
## Test Plan
<!-- How was it tested? -->
the test fixture is updated accordingly
<!--
Thank you for contributing to Ruff! To help us out with reviewing,
please consider the following:
- Does this pull request include a summary of the change? (See below.)
- Does this pull request include a descriptive title?
- Does this pull request include references to any relevant issues?
-->
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
Improve AIR302 test cases
## Test Plan
<!-- How was it tested? -->
test fixtures have been updated accordingly
Summary
--
Detects starred assignment targets outside of tuples and lists like `*a
= (1,)`.
This PR only considers assignment statements. I also checked annotated
assigment statements, but these give a separate error that we already
catch, so I think they're okay not to consider:
```pycon
>>> *a: list[int] = []
File "<python-input-72>", line 1
*a: list[int] = []
^
SyntaxError: invalid syntax
```
Fixes#13759
Test Plan
--
New inline tests, plus a new `SemanticSyntaxError` for an existing
parser test. I also removed a now-invalid case from an otherwise-valid
test fixture.
The new semantic error leads to two errors for the case below:
```python
*foo() = 42
```
but this matches [pyright] too.
[pyright]: https://pyright-play.net/?code=FQMw9mAUCUAEC8sAsAmAUEA
Summary
--
Detect setting or deleting `__debug__`. Assigning to `__debug__` was a
`SyntaxError` on the earliest version I tested (3.8). Deleting
`__debug__` was made a `SyntaxError` in [BPO 45000], which said it was
resolved in Python 3.10. However, `del __debug__` was also a runtime
error (`NameError`) when I tested in Python 3.9.6, so I thought it was
worth including 3.9 in this check.
I don't think it was ever a *good* idea to try `del __debug__`, so I
think there's also an argument for not making this version-dependent at
all. That would only simplify the implementation very slightly, though.
[BPO 45000]: https://github.com/python/cpython/issues/89163
Test Plan
--
New inline tests. This also required adding a `PythonVersion` field to
the `TestContext` that could be taken from the inline `ParseOptions` and
making the version field on the options accessible.
Summary
--
This PR detects multiple assignments to the same name in `case` patterns
by recursively visiting each pattern.
Test Plan
--
New inline tests.
Summary
--
Detects irrefutable `match` cases before the final case using a modified
version
of the existing `Pattern::is_irrefutable` method from the AST crate. The
modified method helps to retrieve a more precise diagnostic range to
match what
Python 3.13 shows in the REPL.
Test Plan
--
New inline tests, as well as some updates to existing tests that had
irrefutable
patterns before the last block.
<!--
Thank you for contributing to Ruff! To help us out with reviewing,
please consider the following:
- Does this pull request include a summary of the change? (See below.)
- Does this pull request include a descriptive title?
- Does this pull request include references to any relevant issues?
-->
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
combine similar case condition in AIR302
## Test Plan
<!-- How was it tested? -->
nothing should be changed. existing test case should already cover it
## Summary
Here I fix the last English spelling errors I could find in the repo.
Again, I am trying not to touch variable/function names, or anything
that might be misspelled in the API. The goal is to make this PR safe
and easy to merge.
## Test Plan
I have run all the unit tests. Though, again, all of the changes I make
here are to docs and docstrings. I make no code changes, which I believe
should greatly mitigate the testing concerns.
<!--
Thank you for contributing to Ruff! To help us out with reviewing,
please consider the following:
- Does this pull request include a summary of the change? (See below.)
- Does this pull request include a descriptive title?
- Does this pull request include references to any relevant issues?
-->
## Summary
This is a cleanup PR. I am fixing various English language spelling
errors. This is mostly in docs and docstrings.
## Test Plan
The usual CI tests were run. I tried to build the docs (though I had
some troubles there). The testing needs here are, I trust, very low
impact. (Though I would happily test more.)
Summary
--
Detects duplicate type parameter names in function definitions, class
definitions, and type alias statements.
I also boxed the `type_params` field on `StmtTypeAlias` to make it
easier to
`match` with functions and classes. (That's the reason for the red-knot
code
owner review requests, sorry!)
Test Plan
--
New `ruff_python_syntax_errors` unit tests.
Fixes#11119.
## Summary
This PR implements the "greeter" approach for checking the AST for
syntax errors emitted by the CPython compiler. It introduces two main
infrastructural changes to support all of the compile-time errors:
1. Adds a new `semantic_errors` module to the parser crate with public
`SemanticSyntaxChecker` and `SemanticSyntaxError` types
2. Embeds a `SemanticSyntaxChecker` in the `ruff_linter::Checker` for
checking these errors in ruff
As a proof of concept, it also implements detection of two syntax
errors:
1. A reimplementation of
[`late-future-import`](https://docs.astral.sh/ruff/rules/late-future-import/)
(`F404`)
2. Detection of rebound comprehension iteration variables
(https://github.com/astral-sh/ruff/issues/14395)
## Test plan
Existing F404 tests, new inline tests in the `ruff_python_parser` crate,
and a linter CLI test showing an example of the `Message` output.
I also tested in VS Code, where `preview = false` and turning off syntax
errors both disable the new errors:
And on the playground, where `preview = false` also disables the errors:
Fixes#14395
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
I am one of the core developers of Airflow and working on the
"airflow.sdk"
package, and this updates the recommended replacments to the correct
user-facing imports.[^1]
cc @Lee-W @uranusjr
[^1]:
33f0f1d639/task-sdk/src/airflow/sdk/__init__.py (L68-L93)
<!--
Thank you for contributing to Ruff! To help us out with reviewing,
please consider the following:
- Does this pull request include a summary of the change? (See below.)
- Does this pull request include a descriptive title?
- Does this pull request include references to any relevant issues?
-->
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
Hope and pray? 😉
I'm sure there are some snapshot files I'm supposed to fix first.
<!-- How was it tested? -->
## Summary
This change follows up on the bug-fix requested in #16747 --
`ruff_python_ast::OperatorPrecedence` had an enum variant, `BitXorOr`,
which which gave the same precedence to the `|` and `^` operators. This
goes against [Python's documentation for operator
precedence](https://docs.python.org/3/reference/expressions.html#operator-precedence),
so this PR changes the code so that it's correct.
This is part of the overall effort to unify redundant definitions of
`OperatorPrecedence` throughout the codebase (#16071)
## Test Plan
Because this is an internal change, I only ran existing tests to ensure
nothing was broken.
The single flag `has_syntax_error` on `LinterResult` is replaced with
two (private) flags: `has_valid_syntax` and
`has_no_unsupported_syntax_errors`, which record whether there are
`ParseError`s or `UnsupportedSyntaxError`s, respectively. Only the
former is used to prevent a `FixAll` action.
An attempt has been made to make consistent the usage of the phrases
"valid syntax" (which seems to be used to refer only to _parser_ errors)
and "syntax error" (which refers to both _parser_ errors and
version-specific syntax errors).
Closes#16841
Summary
--
This PR updates `check_path` in the `ruff_linter` crate to return a
`Vec<Message>` instead of a `Vec<Diagnostic>`. The main motivation for
this is to make it easier to convert semantic syntax errors directly
into `Message`s rather than `Diagnostic`s in #16106. However, this also
has the benefit of keeping the preview check on unsupported syntax
errors in `check_path`, as suggested in
https://github.com/astral-sh/ruff/pull/16429#discussion_r1974748024.
All of the interesting changes are in the first commit. The second
commit just renames variables like `diagnostics` to `messages`, and the
third commit is a tiny import fix.
I also updated the `ExpandedMessage::location` field name, which caused
a few extra commits tidying up the playground code. I thought it was
nicely symmetric with `end_location`, but I'm happy to revert that too.
Test Plan
--
Existing tests. I also tested the playground and server manually.
## Summary
Stop flagging each invocation of `django.utils.safestring.mark_safe`
(also available at, `django.utils.html.mark_safe`) as an error.
Instead, allow string literals as valid uses for `mark_safe`.
Also, update the documentation, pointing at
`django.utils.html.format_html` for dynamic content generation use
cases.
Closes#16702
## Test Plan
I verified several possible uses, but string literals, are still
flagged.
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
## Summary
Follow-up release for Ruff v0.10 that now includes the following two
changes that we intended to ship but slipped:
* Changes to how the Python version is inferred when a `target-version`
is not specified (#16319)
* `blanket-noqa` (`PGH004`): Also detect blanked file-level noqa
comments (and not just line level comments).
## Test plan
I verified that the binary built on this branch respects the
`requires-python` setting
([logs](https://www.diffchecker.com/qyJWYi6W/), left: v0.10, right:
v0.11)
## Summary
This PR stabilizes the behavior introduced in
https://github.com/astral-sh/ruff/pull/15985
The new behavior improves the inference of `str.strip` calls:
* before: The rule only considered calls on string or byte literals
(`"abcd".strip`)
* now: The rule also catches calls to `strip` on object where the type
is known to be a `str` or `bytes` (e.g. `a = "abc"; a.strip("//")`)
The new behavior shipped as part of Ruff 0.9.6 on the 10th of Feb which
is a little more than a month ago.
There have been now new issues or PRs related to the new behavior.
## Summary
This PR promotes the fix improvements for `PLR1714` that were introduced
in https://github.com/astral-sh/ruff/pull/14372/ to stable.
The improvement is that the fix now proposes to use a set if all
elements are hashable:
```
foo == "bar" or foo == "baz" or foo == "qux"
```
Gets fixed to
```py
foo in {"bar", "baz", "qux"}
```
where it previously always got fixed to a tuple.
The new fix was first released in ruff 0.8.0 (Nov last year). This is
not a breaking change. The change was preview gated only to get some
extra test coverage.
There are no open issues or PRs related to this changed fix behavior.
## Summary
This PR stabilizes the behavior changes introduced by
https://github.com/astral-sh/ruff/pull/13305 that were gated behind
preview.
The change is that `__new__` methods are now no longer flagged by
`invalid-first-argument-name-for-class-method` (`N804`) but instead by
`bad-staticmethod-argument` (`PLW0211`)
> __new__ methods are technically static methods, with cls as their
first argument. However, Ruff currently classifies them as classmethod,
which causes two issues:
## Test Plan
There have been no new issues or PRs related to `N804` or `PLW0211`
since the behavior change was released in Ruff 0.9.7 (about 3 weeks
ago).
This is a somewhat recent change but I don't think it's necessary to
leave this in preview for another 2 months. The main reason why it was
in preview
is that it is breaking, not because it is a risky change.
## Summary
This PR stabilizes the fix for `PYI018` introduced in
https://github.com/astral-sh/ruff/pull/15999/ (first released with Ruff
0.9.5 early February)
There are no known issues with the fix or open PRs.
## Summary
Deprecate `S320` because defusedxml has deprecated there `lxml` module
and `lxml` has been hardened since.
flake8-bandit has removed their implementation as well
(https://github.com/PyCQA/bandit/pull/1212).
Addresses https://github.com/astral-sh/ruff/issues/13707
## Test Plan
I verified that selecting `S320` prints a warning and fails if the
preview mode is enabled.
## Summary
This PR stabilizes the fixes improvements made in
https://github.com/astral-sh/ruff/pull/15562 (released with ruff 0.9.3
in mid January).
There's no open issue or PR related to the changed fix behavior.
This is not a breaking change. The fix was only gated behind preview to
get some more test coverage before releasing.
## Summary
This PR stabilizes the behavior change introduced in
https://github.com/astral-sh/ruff/pull/15872/
The diagnostic range is now the range of the redundant `mode` argument
where it previously was the range of the entire `open` call:
Before:
```
UP015.py:2:1: UP015 [*] Unnecessary mode argument
|
1 | open("foo", "U")
2 | open("foo", "Ur")
| ^^^^^^^^^^^^^^^^^ UP015
3 | open("foo", "Ub")
4 | open("foo", "rUb")
|
= help: Remove mode argument
```
Now:
```
UP015.py:2:13: UP015 [*] Unnecessary mode argument
|
1 | open("foo", "U")
2 | open("foo", "Ur")
| ^^^^ UP015
3 | open("foo", "Ub")
4 | open("foo", "rUb")
|
= help: Remove mode argument
```
This is a breaking change because it may require moving a `noqa` comment
onto a different line, e.g if you have
```py
open(
"foo",
"Ur",
) # noqa: UP015
```
Needs to be rewritten to
```py
open(
"foo",
"Ur", # noqa: UP015
)
```
There have been now new issues or PRs since the new preview behavior was
implemented. It first was released as part of Ruff 0.9.5 on the 5th of
Feb (a little more than a month ago)
## Test Plan
I reviewed the snapshot tests
## Summary
This PR stabilizes the preview behavior introduced in
https://github.com/astral-sh/ruff/pull/15719 to recognize all symbols
named `TYPE_CHECKING` as type-checking
checks in `if TYPE_CHECKING` conditions. This ensures compatibility with
mypy and pyright.
This PR also stabilizes the new behavior that removes `if 0:` and `if
False` to be no longer considered type checking blocks.
Since then, this syntax has been removed from the typing spec and was
only used for Python modules that don't have a `typing` module
([comment](https://github.com/astral-sh/ruff/pull/15719#issuecomment-2612787793)).
The preview behavior was first released with Ruff 0.9.5 (6th of
February), which was about a month ago. There are no open issues or PRs
for the changed behavior
## Test Plan
The snapshots for `SIM108` change because `SIM108` ignored type checking
blocks but it can no
simplify `if 0` or `if False` blocks again because they're no longer
considered type checking blocks.
The changes in the `TC005` snapshot or only due to that `if 0` and `if
False` are no longer recognized as type checking blocks
<!-- How was it tested? -->
## Summary
This PR stabilizes the preview behavior for `invalid-argument-name`
(`N803`)
to ignore argument names of functions decorated with `typing.override`
because
these methods are *out of the authors* control.
This behavior was introduced in
https://github.com/astral-sh/ruff/pull/15954
and released as part of Ruff 0.9.5 (6th of February).
There have been no new issues or PRs since this behavior change
(preview) was introduced.
## Summary
This PR stabilizes the preview behavior introduced in
https://github.com/astral-sh/ruff/pull/15905
The behavior change is that the rule now also recognizes `type(expr) is
type(None)` comparisons where `expr` isn't a name expression.
For example, the rule now detects `type(a.b) is type(None)` and suggests
rewriting the comparison to `a.b is None`.
The new behavior was introduced with Ruff 0.9.5 (6th of February), about
a month ago. There are no open issues or PRs related to this rule (or
behavior change).
## Summary
This PR stabilizes the new behavior introduced in
https://github.com/astral-sh/ruff/pull/14512 to also detect defalut
value arguemnts to `os.environ.get` that have an invalid type (not
`str`).
There's an upstream issue for this behavior change
https://github.com/pylint-dev/pylint/issues/10092 that was accepted and
a PR, but it hasn't been merged yet.
This behavior change was first shipped with Ruff 0.8.1 (Nov 22).
There has only be one PR since the new behavior was introduced but it
was unrelated to the scope increase
(https://github.com/astral-sh/ruff/pull/14841).
## Summary
This PR stabilizes the behavior change introduced in
https://github.com/astral-sh/ruff/pull/15542 to allow
for statements with an empty body in `pytest.raises` and `pytest.warns`
with statements.
This raised an error before but is now allowed:
```py
with pytest.raises(KeyError, match='unknown'):
async for _ in gpt.generate(gpt_request):
pass
```
The same applies to
```py
with pytest.raises(KeyError, match='unknown'):
async for _ in gpt.generate(gpt_request):
...
```
There have been now new issues or PRs related to PT012 or PT031 since
this behavior change was introduced in ruff 0.9.3 (January 23rd).
