## Summary
Triggers `no-return-argument-annotation-in-stub` (`PYI050`) for vararg
and kwarg `NoReturn` type annotations.
Related to #8771.
## Test Plan
`cargo test`
## Summary
When a function uses `@functools.singledispatch`, we need to treat the
first argument of any implementations as runtime-required.
Closes https://github.com/astral-sh/ruff/issues/6849.
## Summary
This PR fixes the bug where the autofix for `TRIO115` was taking the
entire arguments range for the fix which included the parenthesis as
well. This means that the fix would remove the arguments and the
parenthesis. The fix is to use the correct range.
fixes: #8713
## Test Plan
Update existing snapshots :)
## Summary
Part 2 of implementing the reverted autofix for `PYI030`
Also handles `typing.Union` and `typing_extensions.Literal` etc, uses
the first subscript name it finds for each offensive line.
## Test Plan
<!-- How was it tested? -->
`cargo test` and manually
---------
Co-authored-by: Zanie Blue <contact@zanie.dev>
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## Summary
Our `SoftKeywordTokenizer` only respected soft keywords in compound
statement positions -- for example, at the start of a logical line:
```python
type X = int
```
However, type aliases can also appear in simple statement positions,
like:
```python
class Class: type X = int
```
(Note that `match` and `case` are _not_ valid keywords in such
positions.)
This PR upgrades the tokenizer to track both kinds of valid positions.
Closes https://github.com/astral-sh/ruff/issues/8900.
Closes https://github.com/astral-sh/ruff/issues/8899.
## Test Plan
`cargo test`
## Summary
These rewrites are only (potentially) unsafe on Python versions that
predate their introduction into the standard library and grammar, so it
seems correct to mark them as safe on those later versions.
## Summary
Allows assignments of the form, e.g., `Attachment =
apps.get_model("zerver", "Attachment")`, for better compatibility with
Django.
Closes https://github.com/astral-sh/ruff/issues/7675.
## Test Plan
`cargo test`
## Summary
Given `with (a := b): pass`, we truncate the `WithItem` range by one on
both sides such that the parentheses are part of the statement, rather
than the item. However, for `with (a := b) as x: pass`, we want to avoid
this trick.
Closes https://github.com/astral-sh/ruff/issues/8913.
## Summary
This PR updates the `E402` rule to work at cell level for Jupyter
notebooks. This is enabled only in preview to gather feedback.
The implementation basically resets the import boundary flag on the
semantic model when we encounter the first statement in a cell.
Another potential solution is to introduce `E403` rule that is
specifically for notebooks that works at cell level while `E402` will be
disabled for notebooks.
## Test Plan
Add a notebook with imports in multiple cells and verify that the rule
works as expected.
resolves: #8669
## Summary
Given `Union[Dict, None]` (in our internal representation), we were
filtering out `Dict` since we treat it as un-representable (i.e., we
can't convert it to an expression), returning just `None` as the type
annotation. We should require that all members of the union are
representable.
Closes https://github.com/astral-sh/ruff/issues/8879.
## Summary
This PR fixes the bug in the lexer where the `Mode::Ipython` wasn't
being considered when initializing the soft keyword transformer which
wraps the lexer. This means that if the source code starts with either
`match` or `type` keyword, then the keywords were being considered as
name tokens instead. For example,
```python
match foo:
case bar:
pass
```
This would transform the `match` keyword into an identifier if the mode
is `Ipython`.
The fix is to reverse the condition in the soft keyword initializer so
that any new modes are by default considered as the lexer being at start
of line.
## Test Plan
Add a new test case for `Mode::Ipython` and verify the snapshot.
fixes: #8870
This PR removes several uses of `unsafe`. I generally limited myself to
low hanging fruit that I could see. There are still a few remaining uses
of `unsafe` that looked a bit more difficult to remove (if possible at
all). But this gets rid of a good chunk of them.
I put each `unsafe` removal into its own commit with a justification for
why I did it. So I would encourage reviewing this PR commit-by-commit.
That way, we can legislate them independently. It's no problem to drop a
commit if we feel the `unsafe` should stay in that case.
## Summary
Closes#1567.
Add both `length-sort` and `length-sort-straight` settings for isort.
Here are a few notable points:
- The length is determined using the
[`unicode_width`](https://crates.io/crates/unicode-width) crate, i.e. we
are talking about displayed length (this is explicitly mentioned in the
description of the setting)
- The dots are taken into account in the length to be compatible with
the original isort
- I had to reorder a few fields of the module key struct for it all to
make sense (notably the `force_to_top` field is now the first one)
## Test Plan
I added tests for the following cases:
- Basic tests for length-sort with ASCII characters only
- Tests with non-ASCII characters
- Tests with relative imports
- Tests for length-sort-straight
This turns `string` into a parent module with a `docstring` sub-module.
I arranged things this way because there are parts of the `string`
module that the `docstring` module wants to know about (such as a
`NormalizedString`). The alternative I think would be to make
`docstring` a sibling module and expose more of `string`'s internals.
I think I overall like this change because it gives docstring handling a
bit more room to breath. It has grown quite a bit with the addition of
code snippet formatting.
[This was suggested by
@charliermarsh.](https://github.com/astral-sh/ruff/pull/8811#discussion_r1401169531)
## Summary
This PR adds opt-in support for formatting doctests in docstrings. This
reflects initial support and it is intended to add support for Markdown
and reStructuredText Python code blocks in the future. But I believe
this PR lays the groundwork, and future additions for Markdown and reST
should be less costly to add.
It's strongly recommended to review this PR commit-by-commit. The last
few commits in particular implement the bulk of the work here and
represent the denser portions.
Some things worth mentioning:
* The formatter is itself not perfect, and it is possible for it to
produce invalid Python code. Because of this, reformatted code snippets
are checked for Python validity. If they aren't valid, then we
(unfortunately silently) bail on formatting that code snippet.
* There are a couple places where it would be nice to at least warn the
user that doctest formatting failed, but it wasn't clear to me what the
best way to do that is.
* I haven't yet run this in anger on a real world code base. I think
that should happen before merging.
Closes#7146
## Test Plan
* [x] Pass the local test suite.
* [x] Scrutinize ecosystem changes.
* [x] Run this formatter on extant code and scrutinize the results.
(e.g., CPython, numpy.)
A follow-up to auto-generate the `FormatNodeRule` implementation for the
string part nodes. This is just a dummy implementation that is
unreachable because it's handled by the parent nodes.
## Summary
This PR is a follow-up to the AST refactor which does the following:
- Remove `Deref` implementation on `StringLiteralValue` and use explicit
`as_str` calls instead. The `Deref` implementation would implicitly
perform allocations in case of implicitly concatenated strings. This is
to make sure the allocation is explicit.
- Now, certain methods can be implemented to do zero allocations which
have been implemented in this PR. They are:
- `is_empty`
- `len`
- `chars`
- Custom `PartialEq` implementation to compare each character
## Test Plan
Run the linter test suite and make sure all tests pass.
## Summary
This PR updates the string nodes (`ExprStringLiteral`,
`ExprBytesLiteral`, and `ExprFString`) to account for implicit string
concatenation.
### Motivation
In Python, implicit string concatenation are joined while parsing
because the interpreter doesn't require the information for each part.
While that's feasible for an interpreter, it falls short for a static
analysis tool where having such information is more useful. Currently,
various parts of the code uses the lexer to get the individual string
parts.
One of the main challenge this solves is that of string formatting.
Currently, the formatter relies on the lexer to get the individual
string parts, and formats them including the comments accordingly. But,
with PEP 701, f-string can also contain comments. Without this change,
it becomes very difficult to add support for f-string formatting.
### Implementation
The initial proposal was made in this discussion:
https://github.com/astral-sh/ruff/discussions/6183#discussioncomment-6591993.
There were various AST designs which were explored for this task which
are available in the linked internal document[^1].
The selected variant was the one where the nodes were kept as it is
except that the `implicit_concatenated` field was removed and instead a
new struct was added to the `Expr*` struct. This would be a private
struct would contain the actual implementation of how the AST is
designed for both single and implicitly concatenated strings.
This implementation is achieved through an enum with two variants:
`Single` and `Concatenated` to avoid allocating a vector even for single
strings. There are various public methods available on the value struct
to query certain information regarding the node.
The nodes are structured in the following way:
```
ExprStringLiteral - "foo" "bar"
|- StringLiteral - "foo"
|- StringLiteral - "bar"
ExprBytesLiteral - b"foo" b"bar"
|- BytesLiteral - b"foo"
|- BytesLiteral - b"bar"
ExprFString - "foo" f"bar {x}"
|- FStringPart::Literal - "foo"
|- FStringPart::FString - f"bar {x}"
|- StringLiteral - "bar "
|- FormattedValue - "x"
```
[^1]: Internal document:
https://www.notion.so/astral-sh/Implicit-String-Concatenation-e036345dc48943f89e416c087bf6f6d9?pvs=4
#### Visitor
The way the nodes are structured is that the entire string, including
all the parts that are implicitly concatenation, is a single node
containing individual nodes for the parts. The previous section has a
representation of that tree for all the string nodes. This means that
new visitor methods are added to visit the individual parts of string,
bytes, and f-strings for `Visitor`, `PreorderVisitor`, and
`Transformer`.
## Test Plan
- `cargo insta test --workspace --all-features --unreferenced reject`
- Verify that the ecosystem results are unchanged
## Summary
This PR updates the `E703` rule to avoid flagging any semicolons if
they're present after the last expression in a notebook cell. These are
intended to hide the cell output.
Part of #8669
## Test Plan
Add test notebook and update the snapshots.
## Summary
This PR updates `B015` and `B018` to ignore last top-level expressions
in each cell of a Jupyter Notebook.
Part of #8669
## Test Plan
Add test cases for both rules and update the snapshots.
## Summary
This refactors the `ruff_cli` integration tests to create a new
`RuffCheck` struct -- this holds options to configure the "common case"
flags that we want to pass to Ruff (e.g. `--no-cache`, `--isolated`,
etc). This helps reduce the boilerplate and (IMO) makes it more obvious
what the core logic of each test is by keeping only the "interesting"
parameters.
## Test Plan
`cargo test`
closes#8732
I noticed that the reference to the setting in the rule docs doesn't
work, but there seem to be something wrong with pylint settings in
general in the docs - the "For related settings, see ...." is also
missing there.
# Summary
This setting behaves similarly to the ``from_first`` setting in isort
upstream, and sorts "from X import Y" type imports before straight
imports.
Like the other PR I added, happy to refactor if this is better in
another form.
Fixes#8662
# Test plan
I've added a unit test, and ran this on a large codebase that relies on
this setting in isort to verify it doesn't have unexpected side effects.
Closes https://github.com/astral-sh/ruff/issues/7347Closes#3970 via use of `include`
We could update examples in our documentation, but I worry since we do
not have versioned documentation users on older versions would be
confused. Instead, I'll open an issue to track updating use of `ruff
check .` in the documentation sometime in the future.
Semantically it makes sense to put certain contextmanagers into separate
with statements. Currently asyncio.timeout and its relatives in anyio
and trio are exempt from SIM117.
Closes https://github.com/astral-sh/ruff/issues/8606
## Summary
Exempt asyncio.timeout and related functions from SIM117 (Collapse with
statements where possible).
See https://github.com/astral-sh/ruff/issues/8606 for more.
## Test Plan
Extended the insta tests.
## Summary
Fixes#8750. `import __main__` is now considered a first-party import,
and is grouped accordingly by the linter and formatter.
## Test Plan
Added a test based off code supplied in the linked issue.
## Summary
In 2.0, Pydantic has moved the `BaseSettings` class to a separate
package called `pydantic-settings`
(https://docs.pydantic.dev/2.4/migration/#basesettings-has-moved-to-pydantic-settings),
which results in a false positive on `RUF012` (`mutable-class-default`).
A simple fix for that would be adding `pydantic_settings.BaseSettings`
base to the `has_default_copy_semantics` helper, which I've done in this
PR.
Related issue: #5308
## Test Plan
`cargo test`
Bumps [js-sys](https://github.com/rustwasm/wasm-bindgen) from 0.3.64 to
0.3.65.
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## Summary
It turns out that some type checkers rely on the presence of ellipses in
`Protocol` interfaces and abstract methods, in order to differentiate
between default implementations and stubs. This PR modifies the preview
behavior of `PIE790` to avoid flagging "unnecessary" ellipses in such
cases.
Closes https://github.com/astral-sh/ruff/issues/8756.
## Test Plan
`cargo test`
If you define a subclass of `pydantic.BaseModel`, and then a subclass of
_that_ class in the same file, we'll now correctly treat it as
runtime-evaluated.
Closes https://github.com/astral-sh/ruff/issues/7893.
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## Summary
Adds the Pylint rule E1132 to check for repeated keyword arguments in a
function call.
## Test Plan
Tested via the included unit tests and manual spot checking.
## Summary
Ensures that we can catch cases like:
```python
ages = {"Tom": 23, "Maria": 23, "Dog": 11}
age = ages.get("Cat", None)
```
Previously, the rule was somewhat useless, as it only checked for
literal accesses.
Closes https://github.com/astral-sh/ruff/issues/8760.
Fix an instability where await was followed by a breaking fluent style
expression:
```python
test_data = await (
Stream.from_async(async_data)
.flat_map_async()
.map()
.filter_async(is_valid_data)
.to_list()
)
```
Note that this technically a minor style change (see ecosystem check)
Closes https://github.com/astral-sh/ruff/issues/8695
We track the smallest offset seen for overindented lines then only
reduce the indentation of the lines that far to preserve indentation in
other lines. This rule's behavior now matches our formatter, which is
nice.
We may want to gate this with preview.
## Summary
When running ruff in verbose mode with `-v`, the first debug logs show
where the config settings are taken from. For example:
```
❯ ruff check ./some_file.py -v
[2023-11-17][00:16:25][ruff_cli::resolve][DEBUG] Using pyproject.toml (parent) at /Users/vince/demo/ruff.toml
```
This threw me off for a second because I knew I had no python project
there, and therefore no `pyproject.toml` file. Then I realised it was
actually reading a `ruff.toml` file (obvious when you read the whole
print I suppose) and that the pyproject.toml is a hardcoded string in
the debug log.
I think it would be nice to tweak the wording slightly so it is clear
that the settings don't neccessarily have to come from a
`pyproject.toml` file.
We ended up with a syntax error here via `from trio import
lowlevel.checkpoint`. The new solution avoids that error, but does miss
cases like:
```py
from trio.lowlevel import Timer
```
Where it could insert `from trio.lowlevel import Timer, checkpoint`.
Instead, it'll add `from trio import lowlevel`.
See:
https://github.com/astral-sh/ruff/issues/8402#issuecomment-1810838129
Update to [Rust
1.74](https://blog.rust-lang.org/2023/11/16/Rust-1.74.0.html) and use
the new clippy lints table.
The update itself introduced a new clippy lint about superfluous hashes
in raw strings, which got removed.
I moved our lint config from `rustflags` to the newly stabilized
[workspace.lints](https://doc.rust-lang.org/stable/cargo/reference/workspaces.html#the-lints-table).
One consequence is that we have to `unsafe_code = "warn"` instead of
"forbid" because the latter now actually bans unsafe code:
```
error[E0453]: allow(unsafe_code) incompatible with previous forbid
--> crates/ruff_source_file/src/newlines.rs:62:17
|
62 | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
|
= note: `forbid` lint level was set on command line
```
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
I think it's reasonable to avoid raising `INP001` for scripts, and
shebangs are one sufficient way to detect scripts.
Closes https://github.com/astral-sh/ruff/issues/8690.
I checked for ipython-specific builtins on python 3.11 using
```python
import json
from subprocess import check_output
builtins_python = json.loads(check_output(["python3", "-c" "import json; print(json.dumps(dir(__builtins__)))"]))
builtins_ipython = json.loads(check_output(["ipython3", "-c" "import json; print(json.dumps(dir(__builtins__)))"]))
print(sorted(set(builtins_ipython) - set(builtins_python)))
```
and updated the relevant constant and match. The list changes from
`display`
to
`__IPYTHON__`, `display`, `get_ipython`.
Followup to #8707
## Summary
This exists to power a test, but it ends up affecting the behavior of
all files in the directory. Namely, it means that these files _aren't_
excluded when you format or lint them directly, since in that case, Ruff
will fall back to looking at the `pyproject.toml` in
`crates/ruff_linter/resources/test/fixtures`, which _doesn't_ exclude
these files, unlike our top-level `pyproject.toml`.
## Summary
We already support inserting imports for `I002` -- this PR just adds the
same fix for `FA102`, which is explicitly about `from __future__ import
annotations`.
Closes https://github.com/astral-sh/ruff/issues/8682.
## Summary
It seems like the range of an `ExprStringLiteral` can be somewhat
unreliable when the string is part of an implicit concatenation with an
f-string. Using the tokens themselves is more reliable.
Closes#8680.
Closes https://github.com/astral-sh/ruff/issues/7784.
## Summary
`display` is a special-cased builtin in IPython. This PR adds it to the
builtin namespace when analyzing IPython notebooks.
Closes https://github.com/astral-sh/ruff/issues/8702.
## Summary
This adds an autofix for PIE800 (unnecessary spread) -- whenever we see
a `**{...}` inside another dictionary literal, just delete the `**{` and
`}` to inline the key-value pairs. So `{"a": "b", **{"c": "d"}}` becomes
just `{"a": "b", "c": "d"}`.
I have enabled this just for preview mode.
## Test Plan
Updated the preview snapshot test.
## Summary
Implements
[FURB136](https://github.com/dosisod/refurb/blob/master/docs/checks.md#furb136-use-min-max)
that checks for `if` expressions that can be replaced with `min()` or
`max()` calls. See issue #1348 for more information.
This implementation diverges from Refurb's original implementation by
retaining the order of equal values. For example, Refurb suggest that
the following expressions:
```python
highest_score1 = score1 if score1 > score2 else score2
highest_score2 = score1 if score1 >= score2 else score2
```
should be to rewritten as:
```python
highest_score1 = max(score1, score2)
highest_score2 = max(score1, score2)
```
whereas this implementation provides more correct alternatives:
```python
highest_score1 = max(score2, score1)
highest_score2 = max(score1, score2)
```
## Test Plan
Unit test checks all eight possibilities.
Testing the compatibility with the future stable black style, i realized
the `ruff_python_formatter` dev main was lacking the
`--skip-magic-trailing-comma` option. This does not affect `ruff
format`.
Usage:
```shell
cargo run --bin ruff_python_formatter -p ruff_python_formatter -- --skip-magic-trailing-comma --emit stdout scratch.py
```
## Summary
This adds a ``no-sections`` option for isort in the linter, similar to
the ``no_sections`` option that exists in upstream isort
(https://pycqa.github.io/isort/docs/configuration/options.html#no-sections)
This option puts all imports except for ``__future__`` into the same
section, and is mostly used by monorepos.
I've taken a bit of a leap in assuming that ruff wants to support the
exact same option; more than happy to refactor if you'd prefer a
different way of setting this up.
Fixes#8653
## Test Plan
I've added a test and have run it on a large Python codebase that uses
isort with --no-sections. The option is disabled by default.
While fixing #8661 I noticed that the code structure for sorting imports
could be simplified.
## Summary
- Move the logic for `force_sort_within_sections` from `isort/mod.rs` to
`isort/ordering.rs` => now there is just one line in `isort/mod.rs`:
`let imports = order_imports(import_block, settings);` which yields the
sorted imports
- Change the function signature of `order_imports` to directly return a
`Vec<EitherImport<'a>>` => no need for `OrderedImportBlock`
I think this is a bit of an improvement because the code is simpler and
there should be a bit of a speedup when setting
`force-sort-within-sections` to true. Indeed, when it's set to true
we're now directly ordering all the imports, whereas before we would
first order the straight imports, then the from imports, combine them
and finally sort the combination a second time (this is probably not
noticeable in practice though).
## Test Plan
No tests added, this is a simple refactor.
For the `PLW0129` rule, the f-string case shouldn't match against bytes
literal as f-strings cannot contain them. F-strings are made up of
either string literals or formatted expressions.
## Summary
This PR adds (unsafe) fixes to the flake8-annotations rules that enforce
missing return types, offering to automatically insert type annotations
for functions with literal return values. The logic is smart enough to
generate simplified unions (e.g., `float` instead of `int | float`) and
deal with implicit returns (`return` without a value).
Closes https://github.com/astral-sh/ruff/issues/1640 (though we could
open a separate issue for referring parameter types).
Closes https://github.com/astral-sh/ruff/issues/8213.
## Test Plan
`cargo test`
Fixes#8661
## Summary
Imports like `from x import y` don't have an "asname" for the module, so
they were placed before imports like `import x as w` since `None` <
`Some(s)` for any string s.
The fix is to first sort by `first_alias`, since it's `None` for `import
x as w`, and then by `asname`.
## Test Plan
I included the example from the issue to avoid future regressions.
When using the autofixer for `Q000` it does not remove the backslashes
from quotes that no longer need escaping.
This new rule checks for such backslashes (regardless whether they come
from the autofixer or not) and can remove them.
fixes#8617
## Summary
This PR extends `unnecessary-pass` (`PIE790`) to flag unnecessary
ellipsis expressions in addition to `pass` statements. A `pass` is
equivalent to a standalone `...`, so it feels correct to me that a
single rule should cover both cases.
When we look to v0.2.0, we should also consider deprecating `PYI013`,
which flags ellipses only for classes.
Closes https://github.com/astral-sh/ruff/issues/8602.
## Summary
PIE807 will rewrite `lambda: []` to `list` -- AFAICT though, the same
rationale also applies to dicts, so I've modified the code to also
rewrite `lambda: {}` to `dict`.
Two things I'm not sure about:
* Should this go to a new rule? This no longer actually matches the
behavior of flake8-pie, and while I think thematically it makes sense to
be part of the same rule, we could make it a standalone rule (but if so,
where should I put it and what error code should I use)?
* If we want a single rule, are there backwards compatibility concerns
with the rule name change (from `reimplemented_list_builtin` to
`reimplemented_container_builtin`?
## Test Plan
Added snapshot tests of the functionality.
## Summary
This PR implements validation in the formatter tests to ensure that we
don't modify the AST during formatting. Black has similar logic.
In implementing this, I learned that Black actually _does_ modify the
AST, and their test infrastructure normalizes the AST to wipe away those
differences. Specifically, Black changes the indentation of docstrings,
which _does_ modify the AST; and it also inserts parentheses in `del`
statements, which changes the AST too.
Ruff also does both these things, so we _also_ implement the same
normalization using a new visitor that allows for modifying the AST.
Closes https://github.com/astral-sh/ruff/issues/8184.
## Test Plan
`cargo test`
## Summary
This PR makes `whitespace-before-punctuation` (`E203`) compatible with
the formatter by relaxing the rule a bit, as compared to the pycodestyle
implementation. It's also more consistent with PEP 8, which says:
> However, in a slice the colon acts like a binary operator, and should
have equal amounts on either side (treating it as the operator with the
lowest priority).
Closes https://github.com/astral-sh/ruff/issues/7259.
Closes https://github.com/astral-sh/ruff/issues/8642.
## Test Plan
`cargo test`
It seems as though using `include!(...)` to avoid the source code copy
breaks rust-analzer. Namely, it treats the included file as unlinked,
and so any part of analysis (e.g., goto-definition) that needs that file
to reason about the code ends up failing.
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
## Test Plan
<!-- How was it tested? -->
Previously, this rule used the range of the `self` annotation, but it's
a lot more natural to use the range of the function name (since it also
means the `# noqa` is associated with the method rather than its first
argument).
Closes https://github.com/astral-sh/ruff/issues/8635.
## Summary
- Close#7487
In the spirit of `flake8-boolean-trap`, any positional argument that can
accept a boolean should raise `FBT001`.
Raise `FBT001` for all annotations that accept booleans (e.g.
`Optional[bool]`, `Union[int, bool]`).
## Test Plan
Add a fixture, with an annotation using `|`, `Optional`, and `Union`,
and containing a boolean.
## Summary
Removes unnecessary commentary from the PD901 message. This does make it
different from pandas-vet, but it improves consistency with the rest of
messages.
Current Message:
> `df` is a bad variable name. Be kinder to your future self.
New Message
> `df` is a bad variable name.
## Test Plan
The relevant snapshot has been updated with the new message.
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
I got an error from RUF001 and wanted to override it. How to do that was
not quite obvious. In the process I have tried to improve the
documentation for the rule and it's siblings.
## Summary
Adds an extra check to F632 to check for any `is` comparisons to a
mutable initialisers.
Implements #8589 .
Example:
```Python
named_var = {}
if named_var is {}: # F632 (fix)
pass
```
The if condition will always evaluate to False because it checks on
identity and it's impossible to take the same identity as a hard coded
list/set/dict initializer.
## Test Plan
Multiple test cases were added to ensure the rule works + doesn't flag
false positives + the fix works correctly.
## Summary
This fixes#2606 by moving where we apply the convention ignores --
instead of applying that at the very end, e track, we now track which
rules have been specifically enabled (via `Specificity::Rule`). If they
have, then we do *not* apply the docstring overrides at the end.
## Test Plan
Added unit tests to `ruff_workspace` and an integration test to
`ruff_cli`
## Summary
This PR updates the formatter to preserve trailing semicolon for Jupyter
Notebooks.
The motivation behind the change is that semicolons in notebooks are
typically used to hide the output, for example when plotting. This is
highlighted in the linked issue.
The conditions required as to when the trailing semicolon should be
preserved are:
1. It should be a top-level statement which is last in the module.
2. For statement, it can be either assignment, annotated assignment, or
augmented assignment. Here, the target should only be a single
identifier i.e., multiple assignments or tuple unpacking isn't
considered.
3. For expression, it can be any.
## Test Plan
Add a new integration test in `ruff_cli`. The test notebook basically
acts as a document as to which trailing semicolons are to be preserved.
fixes: #8254
Previously, this lint had its alias detection logic a little
backwards. That is, for Python 3.11+, it would *only* detect
asyncio.TimeoutError as an alias, but it should have also detected
socket.timeout as an alias. And in Python <3.11, it would falsely
detect asyncio.TimeoutError as an alias where it should have only
detected socket.timeout as an alias.
We fix it so that both asyncio.TimeoutError and socket.timeout are
detected as aliases in Python 3.11+, and only socket.timeout is
detected as an alias in Python 3.10.
Fixes#8565
## Test Plan
I tested this by updating the existing snapshot test which had
erroneously
asserted that socket.timeout should not be replaced with TimeoutError in
Python
3.11+. I also added a new regression test that targets Python 3.10 and
ensures
that the suggestion to replace asyncio.TimeoutError with TimeoutError
does not
occur.
## Summary
This fixes the bug where the `flake8-commas` rules weren't taking the
new f-string tokens into account.
## Test Plan
Add new test cases around f-strings for all of `flake8-commas`'s rules.
fixes: #8556
## Summary
When you run Ruff via stdin, and pass `format` or `check --fix`, we
typically write the changed or unchanged contents to stdout. It turns
out we forgot to do this when the file is _excluded_, so if you run
`ruff format /path/to/excluded/file.py`, we don't write _anything_ to
`stdout`. This led to a bug in the LSP whereby we deleted file contents
for third-party files.
The right thing to do here is write back the unchanged contents, as it
should always be safe to write the output of stdout back to a file.
## Summary
An assignment can be _both_ (e.g.) a loop variable _and_ assigned via
unpacking. In other words, unpacking is a quality of an assignment, not
a _kind_.
## Summary
This brings ruff's behavior in line with what `pep8-naming` already does
and thus closes#8397.
I had initially implemented this to look at the last segment of a dotted
path only when the entry in the `*-decorators` setting started with a
`.`, but in the end I thought it's better to remain consistent w/
`pep8-naming` and doing a match against the last segment of the
decorator name in any case.
If you prefer to diverge from this in favor of less ambiguity in the
configuration let me know and I'll change it so you would need to put
e.g. `.expression` in the `classmethod-decorators` list.
## Test Plan
Tested against the file in the issue linked below, plus the new testcase
added in this PR.
~Improves detection of types imported from `typing_extensions`. Removes
the hard-coded list of supported types in `typing_extensions`; instead
assuming all types could be imported from `typing`, `_typeshed`, or
`typing_extensions`.~
~The typing extensions package appears to re-export types even if they
do not need modification.~
Adds detection of `if typing_extensions.TYPE_CHECKING` blocks. Avoids
inserting a new `if TYPE_CHECKING` block and `from typing import
TYPE_CHECKING` if `typing_extensions.TYPE_CHECKING` is used (closes
https://github.com/astral-sh/ruff/issues/8427)
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
This PR fixes the bug where the generated fix for `EM*` rules would
replace a
triple-quoted (f-)string with a single-quoted (f-)string. This changes
the
semantic of the string in case it contains a single-quoted string
literal. This
is especially evident with f-strings where the expression could contain
another
string within it. For example,
```python
f"""normal {"another"} normal"""
```
## Test Plan
Add test case for triple-quoted string and update the snapshots.
fixes: #6988fixes: #7736
This ensures the python label is used for all python code blocks for
consistency.
## Test Plan
Visual inspection of all changes via git client ensuring no other
changes were made in error.
## Summary
This PR addresses the incompatibility with `jupyterlab-lsp` +
`python-lsp-ruff` arising from the inference of source type from file
extension, raised in #6847.
In particular it follows the suggestion in
https://github.com/astral-sh/ruff/issues/6847#issuecomment-1765724679 to
specify a mapping from file extension to source type.
The source types are
- python
- pyi
- ipynb
Usage:
```sh
ruff check --no-cache --stdin-filename Untitled.ipynb --extension ipynb:python
```
Unlike the original suggestion, `:` instead of `=` is used to associate
file extensions to language since that is what is used with
`--per-file-ignores` which is an existing option that accepts a mapping.
## Test Plan
2 tests added to `integration_test.rs` to ensure the override works as
expected
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
Prior to this change `extend_unsafe_fixes` took precedence over
`extend_safe_fixes` selectors, so any conflicts were resolved in favour
of `extend_unsafe_fixes`. Thanks to that ruff were conservatively
assuming that if configs conlict the fix corresponding to selected rule
will be treated as unsafe.
After this change we take into account Specificity of the selectors. For
conflicts between selectors of the same Specificity we will treat the
corresponding fixes as unsafe. But if the conflicting selectors are of
different specificity the more specific one will win.
## Test Plan
Tests were added for the `FixSafetyTable` struct. The
`check_extend_unsafe_fixes_conflict_with_extend_safe_fixes_by_specificity`
integration test was added to test conflicting rules of different
specificity.
Fixes#8404
---------
Co-authored-by: Zanie <contact@zanie.dev>
These names are only ever displayed internally right now and we could be
clearer in our test snapshots.
The diff is kind of scary because all of the tests fixtures are updated.
## Summary
Being able to set `--no-cache` without touching the command line makes
comparing formatter speed with e.g. Hyperfine a lot easier; Black allows
one to set `BLACK_CACHE_DIR=/dev/null`, but setting
`RUFF_CACHE_DIR=/dev/null` has Ruff choke:
```
error: Failed to initialize cache at /dev/null: Not a directory (os error 20)
error: Failed to initialize cache at /dev/null: Not a directory (os error 20)
warning: Failed to open cache file '/dev/null/0.1.4/18160934645386409287': Not a directory (os error 20)
```
Alternately, we could make a `/dev/null` (or `nul` on Windows) cache
directory imply `--no-cache`?
## Test Plan
None yet.
## Summary
This commit adds some additional error checking to the parser such that
assignments that are invalid syntax are rejected. This covers the
obvious cases like `5 = 3` and some not so obvious cases like `x + y =
42`.
This does add an additional recursive call to the parser for the cases
handling assignments. I had initially been concerned about doing this,
but `set_context` is already doing recursion during assignments, so I
didn't feel as though this was changing any fundamental performance
characteristics of the parser. (Also, in practice, I would expect any
such recursion here to be quite shallow since the recursion is done on
the target of an assignment. Such things are rarely nested much in
practice.)
Fixes#6895
## Test Plan
I've added unit tests covering every case that is detected as invalid on
an `Expr`.
## Summary
Fixes bug in `TRIO115` where it would not `return` for values that were
not a `NumberLiteral` so
```python
x = "bla"
trio.sleep(x)
```
would set off a false positive
## Test Plan
Added test case to fixture
## Summary
Given `key in obj.keys()`, `obj` _could_ be a dictionary, or it could be
another type that defines
a `.keys()` method. In the latter case, removing the `.keys()` attribute
could lead to a runtime error.
Previously, we marked all `SIM118` fixes as unsafe for this reason;
however, in preview, we now mark them as safe if we can
infer that the expression is a dictionary.
## Test Plan
Added a preview fixture.
## Summary
We have this pattern in a bunch of places, where we find the _only_
binding to a name (and return `None`) if it's bound multiple times. This
PR DRYs it up into a method on `SemanticModel`.
## Summary
If you want to create an edit with dynamic applicability, you have to
branch and repeat the edit entirely between the two branches. If you
further need the edit itself to be dynamic (e.g., perhaps you have a
single edit in one case, vs. multiple in another), you suddenly have
four branches. This PR just adds an alternate constructor that takes
applicability as an argument, as an escape hatch.
## Summary
Implement
[`no-is-type-none`](https://github.com/dosisod/refurb/blob/master/refurb/checks/builtin/no_is_type_none.py)
as `type-none-comparison` (`FURB169`).
Auto-fixes comparisons that use `type` to compare the type of an object
to `type(None)` to a `None` identity check. For example,
```python
type(foo) is type(None)
```
becomes
```python
foo is None
```
Related to #1348.
## Test Plan
`cargo test`
## Summary
Black and Ruff's preview styles now collapse statements like:
```python
from contextlib import nullcontext
ctx = nullcontext()
with ctx: ...
```
Historically, we made an exception here for classes
(https://github.com/astral-sh/ruff/pull/2837). This PR extends it to
other statement kinds for consistency with the formatter.
Closes https://github.com/astral-sh/ruff/issues/8496.
## Summary
Adds `TRIO105` from the [flake8-trio
plugin](https://github.com/Zac-HD/flake8-trio). The `MethodName` logic
mirrors that of `TRIO100` to stay consistent within the plugin.
It is at 95% parity with the exception of upstream also checking for a
slightly more complex scenario where a call to `start()` on a
`trio.Nursery` context should also be immediately awaited. Upstream
plugin appears to just check for anything named `nursery` judging from
[the relevant issue](https://github.com/Zac-HD/flake8-trio/issues/56).
Unsure if we want to do so something similar or, alternatively, if there
is some capability in ruff to check for calls made on this context some
other way
## Test Plan
Added a new fixture, based on [the one from upstream
plugin](https://github.com/Zac-HD/flake8-trio/blob/main/tests/eval_files/trio105.py)
## Issue link
Refers: https://github.com/astral-sh/ruff/issues/8451
## Summary
This PR fixes a bug in our formatter where a multiline lambda expression
statement was formatted over multiple lines without adding parentheses.
The PR "fixes" the problem by not splitting the lambda parameters if it
is not parenthesized
## Test Plan
Added test
## Summary
Adds `memoryview` to the list of typeclasses that `fn is_type()` uses
for type comparison checks so that it raises a violation if `is`, `is
not` or `isinstance()` are not used.
## Test Plan
Added examples to existing fixture
## Issue Link
Closes: https://github.com/astral-sh/ruff/issues/8483
This is the one refactor in the NumPy 2.0 upgrade rule that isn't
compatible with earlier versions of NumPy, so I'm marking it as unsafe
and adding a dedicated message.
## Summary
Currently, `UP032` applied to raw strings results in format strings with
the prefix 'fr'. This gets changed to 'rf' by Ruff format (or Black). In
order to avoid that, this PR uses the prefix 'rf' to begin with.
## Test Plan
Updated the expectation on an existing test.
## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
Hi! Currently NumPy Python API is undergoing a cleanup process that will
be delivered in NumPy 2.0 (release is planned for the end of the year).
Most changes are rather simple (renaming, removing or moving a member of
the main namespace to a new place), and they could be flagged/fixed by
an additional ruff rule for numpy (e.g. changing occurrences of
`np.float_` to `np.float64`).
Would you accept such rule?
I named it `NPY201` in the existing group, so people will receive a
heads-up for changes arriving in 2.0 before actually migrating to it.
~~This is still a draft PR.~~ I'm not an expert in rust so if any part
of code can be done better please share!
NumPy 2.0 migration guide:
https://numpy.org/devdocs/numpy_2_0_migration_guide.html
NEP 52: https://numpy.org/neps/nep-0052-python-api-cleanup.html
NumPy cleanup tracking issue:
https://github.com/numpy/numpy/issues/23999
## Test Plan
A unit test is provided that checks all rule's fix cases.
## Summary
LangChain is attempting to use Ruff over their Jupyter notebooks
(https://github.com/langchain-ai/langchain/pull/12677/files), but
running into a bunch of syntax errors, the majority of which come from
our inability to recognize automagic.
If you run this in a cell:
```jupyter
pip install requests
```
Jupyter will automatically treat that as:
```jupyter
%pip install requests
```
We need to ignore cells that use these automagics, since the parser
doesn't understand them. (I guess we could support it in the parser, but
that seems much harder?). The good news is that AFAICT Jupyter doesn't
let you mix automagics with code, so by skipping these cells, we don't
miss out on analyzing any Python code.
## Test Plan
1. `cargo test`
2. Ran over LangChain and verified that there are no more errors
relating to `pip install` automagics.
## Summary
This PR removes the `unicode` flag from the string literal in
`ComparableExpr`. This flag isn't required as all strings are unicode in
Python 3 so `"foo" == u"foo"`.
## Summary
We typically avoid enforcing exclusions if a file was passed to Ruff
directly on the CLI. However, we also allow `--force-exclude`, which
ignores excluded files _even_ if they're passed to Ruff directly. This
is really important for pre-commit, which always passes changed files --
we need to exclude files passed by pre-commit if they're in the
`exclude` lists.
Turns out the new `lint.exclude` and `format.exclude` settings weren't
respecting `--force-exclude`.
Closes https://github.com/astral-sh/ruff/issues/8391.
## Summary
By using `set`, we were setting the bracket flag to `false` if another
operator was visited.
Closes https://github.com/astral-sh/ruff/issues/8379.
## Test Plan
`cargo test`
## Summary
This PR adds a new `LiteralExpressionRef` which wraps all of the literal
expression nodes in a single enum. This allows for a narrow type when
working exclusively with a literal node. Additionally, it also
implements a `Expr::as_literal_expr` method to return the new enum if
the expression is indeed a literal one.
A few rules have been updated to account for the new enum:
1. `redundant_literal_union`
2. `if_else_block_instead_of_dict_lookup`
3. `magic_value_comparison`
To account for the change in (2), a new `ComparableLiteral` has been
added which can be constructed from the new enum
(`ComparableLiteral::from(<LiteralExpressionRef>)`).
### Open Questions
1. The new `ComparableLiteral` can be exclusively used via the
`LiteralExpressionRef` enum. Should we remove all of the literal
variants from `ComparableExpr` and instead have a single
`ComparableExpr::Literal(ComparableLiteral)` variant instead?
## Test Plan
`cargo test`
## Summary
We were considering the `{` within an f-string to be a left brace, which
caused the "space-after-colon" rule to trigger incorrectly.
Closes https://github.com/astral-sh/ruff/issues/8299.
## Summary
Uses `warn_user_once!` instead of `warn!` to ensure that every warning
is shown exactly once, regardless of whether there are duplicates in the
list, or warnings that are raised by multiple configuration files.
Closes#8271.
## Summary
If the value of `shell` wasn't literally `True`, we now show a message
describing it as truthy, rather than the (misleading) `shell=True`
literal in the diagnostic.
Closes https://github.com/astral-sh/ruff/issues/8310.
**Summary** Previously, own line comment following after a docstring
followed by newline(s) before the first content statement were treated
as trailing on the docstring and we didn't insert a newline after the
docstring as black would.
Before:
```python
class ModuleBrowser:
"""Browse module classes and functions in IDLE."""
# This class is also the base class for pathbrowser.PathBrowser.
def __init__(self, master, path, *, _htest=False, _utest=False):
pass
```
After:
```python
class ModuleBrowser:
"""Browse module classes and functions in IDLE."""
# This class is also the base class for pathbrowser.PathBrowser.
def __init__(self, master, path, *, _htest=False, _utest=False):
pass
```
I'm not entirely happy about hijacking
`handle_own_line_comment_between_statements`, but i don't know a better
spot to put it.
Fixes#7948
**Test Plan** Fixtures
We previously incorrectly treated byte strings in docstring position as
docstrings because black does so
(https://github.com/astral-sh/ruff/pull/8283#discussion_r1375682931,
https://github.com/psf/black/issues/4002), even CPython doesn't
recognize them:
```console
$ python3.12
Python 3.12.0 (main, Oct 6 2023, 17:57:44) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> def f():
... b""" a"""
...
>>> print(str(f.__doc__))
None
```
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## Summary
This PR adds `Default` for the following literal nodes:
* `StringLiteral`
* `BytesLiteral`
* `BooleanLiteral`
* `NoneLiteral`
* `EllipsisLiteral`
The implementation creates the zero value of the respective literal
nodes in terms of the Python language.
## Test Plan
`cargo test`
## Summary
This PR inlines the formatting logic for `ExprNumberLiteral` and removes
the need of having dedicated `Format*` struct for each number type.
## Test Plan
`cargo test`
## Summary
This PR splits the `Constant` enum as individual literal nodes. It
introduces the following new nodes for each variant:
* `ExprStringLiteral`
* `ExprBytesLiteral`
* `ExprNumberLiteral`
* `ExprBooleanLiteral`
* `ExprNoneLiteral`
* `ExprEllipsisLiteral`
The main motivation behind this refactor is to introduce the new AST
node for implicit string concatenation in the coming PR. The elements of
that node will be either a string literal, bytes literal or a f-string
which can be implemented using an enum. This means that a string or
bytes literal cannot be represented by `Constant::Str` /
`Constant::Bytes` which creates an inconsistency.
This PR avoids that inconsistency by splitting the constant nodes into
it's own literal nodes, literal being the more appropriate naming
convention from a static analysis tool perspective.
This also makes working with literals in the linter and formatter much
more ergonomic like, for example, if one would want to check if this is
a string literal, it can be done easily using
`Expr::is_string_literal_expr` or matching against `Expr::StringLiteral`
as oppose to matching against the `ExprConstant` and enum `Constant`. A
few AST helper methods can be simplified as well which will be done in a
follow-up PR.
This introduces a new `Expr::is_literal_expr` method which is the same
as `Expr::is_constant_expr`. There are also intermediary changes related
to implicit string concatenation which are quiet less. This is done so
as to avoid having a huge PR which this already is.
## Test Plan
1. Verify and update all of the existing snapshots (parser, visitor)
2. Verify that the ecosystem check output remains **unchanged** for both
the linter and formatter
### Formatter ecosystem check
#### `main`
| project | similarity index | total files | changed files |
|----------------|------------------:|------------------:|------------------:|
| cpython | 0.75803 | 1799 | 1647 |
| django | 0.99983 | 2772 | 34 |
| home-assistant | 0.99953 | 10596 | 186 |
| poetry | 0.99891 | 317 | 17 |
| transformers | 0.99966 | 2657 | 330 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99978 | 3669 | 20 |
| warehouse | 0.99977 | 654 | 13 |
| zulip | 0.99970 | 1459 | 22 |
#### `dhruv/constant-to-literal`
| project | similarity index | total files | changed files |
|----------------|------------------:|------------------:|------------------:|
| cpython | 0.75803 | 1799 | 1647 |
| django | 0.99983 | 2772 | 34 |
| home-assistant | 0.99953 | 10596 | 186 |
| poetry | 0.99891 | 317 | 17 |
| transformers | 0.99966 | 2657 | 330 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99978 | 3669 | 20 |
| warehouse | 0.99977 | 654 | 13 |
| zulip | 0.99970 | 1459 | 22 |
## Summary
This PR adds a new `Singleton` enum for the `PatternMatchSingleton`
node.
Earlier the node was using the `Constant` enum but the value for this
pattern can only be either `None`, `True` or `False`. With the coming PR
to remove the `Constant`, this node required a new type to fill in.
This also has the benefit of narrowing the type down to only the
possible values for the node as evident by the removal of `unreachable`.
## Test Plan
Update the AST snapshots and run `cargo test`.
## Summary
Refactor for isort implementation. Closes#7738.
I introduced a `NatOrdString` and a `NatOrdStr` type to have a naturally
ordered `String` and `&str`, and I pretty much went back to the original
implementation based on `module_key`, `member_key` and
`sorted_by_cached_key` from itertools. I tried my best to avoid
unnecessary allocations but it may have been clumsy in some places, so
feedback is appreciated! I also renamed the `Prefix` enum to
`MemberType` (and made some related adjustments) because I think this
fits more what it is, and it's closer to the wording found in the isort
documentation.
I think the result is nicer to work with, and it should make
implementing #1567 and the like easier :)
Of course, I am very much open to any and all remarks on what I did!
## Test Plan
I didn't add any test, I am relying on the existing tests since this is
just a refactor.
## Summary
Implements pylint C0415 (import-outside-toplevel) — imports should be at
the top level of a file.
The great debate I had on this implementation is whether "top-level" is
one word or two (`toplevel` or `top_level`). I opted for 2 because that
seemed to be how it is used in the codebase but the rule string itself
uses one-word "toplevel." 🤷 I'd be happy to change it as desired.
I suppose this could be auto-fixed by moving the import to the
top-level, but it seems likely that the author's intent was to actually
import this dynamically, so I view the main point of this rule is to
force some sort of explanation, and auto-fixing might be annoying.
For reference, this is what "pylint" reports:
```
> pylint crates/ruff/resources/test/fixtures/pylint/import_outside_top_level.py
************* Module import_outside_top_level
...
crates/ruff/resources/test/fixtures/pylint/import_outside_top_level.py:4:4: C0415: Import outside toplevel (string) (import-outside-toplevel)
```
ruff would now report:
```
import_outside_top_level.py:4:5: PLC0415 `import` should be used only at the top level of a file
|
3 | def import_outside_top_level():
4 | import string # [import-outside-toplevel]
| ^^^^^^^^^^^^^ PLC0415
|
```
Contributes to https://github.com/astral-sh/ruff/issues/970.
## Test Plan
Snapshot test.
## Summary
If a file has no diagnostics, then we can read and write that
information from and to the cache, even if the fix mode is `--fix` or
`--diff`. (Typically, we can't read or write such results from or to the
cache, because `--fix` and `--diff` have side effects that take place
during diagnostic analysis (writing to disk or outputting the diff).)
This greatly improves performance when running `--fix` on a codebase in
the common case (few diagnostics).
Closes#8311.
Closes https://github.com/astral-sh/ruff/issues/8315.
## Summary
This makes use of memchr and other methods to parse the strings
(hopefully) faster. It might also be worth converting the
`parse_fstring_middle` helper to use similar techniques, but I did not
implement it in this PR.
## Test Plan
This was tested using the existing tests and passed all of them.
## Summary
Implement
[`no-isinstance-type-none`](https://github.com/dosisod/refurb/blob/master/refurb/checks/builtin/no_isinstance_type_none.py)
as `isinstance-type-none` (`FURB168`).
Auto-fixes calls to `isinstance` to check if an object is `None` to a
`None` identity check. For example,
```python
isinstance(foo, type(None))
```
becomes
```python
foo is None
```
Related to #1348.
## Test Plan
`cargo test`
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
Remove wrong note on `tool.ruff.format` `exclude` option from
documentation which is referencing `extend-exclude` even if it's not
relevant for the formatter options (`exclude` is additive). See #8301
## Test Plan
N/A (Docs change)
## Summary
Add missing "is":
```diff
- The 🧪 emoji indicates that a rule in "preview".
+ The 🧪 emoji indicates that a rule is in "preview".
```
## Test Plan
N/A
## Summary
Since `--format` was changed to `--output-format` for `check`, it feels
like it makes sense for the same to work for the auxiliary commands.
This
* adds the same deprecation warning that used to be a thing in #7514
(and un-became a thing in #7984)
Fixes#7990.
## Test Plan
* `cargo run --bin=ruff -- rule --all --output-format=json` works
* `cargo run --bin=ruff -- rule --format=json` works with warnings
Change
```python
"""Test docstring"""
a = 1
```
to
```python
"""Test docstring"""
a = 1
```
in preview style, but don't touch the docstring otherwise.
Do we want to ask black to also format the content of module level
docstrings? Seems inconsistent to me that we change function and class
docstring indentation/contents but not module docstrings.
Fixes https://github.com/astral-sh/ruff/issues/7995
## Summary
This PR removes the `debug_assertion` in the `Indexer` to allow
unterminated f-strings. This is mainly a fix in the development build
which now matches the release build.
The fix is simple: remove the `debug_assertion` which means that the
there could be `FStringStart` and possibly `FStringMiddle` tokens
without a corresponding f-string range in the `Indexer`. This means that
the code requesting for the f-string index need to account for the
`None` case, making the code safer.
This also updates the code which queries the `FStringRanges` to account
for the `None` case. This will happen when the `FStringStart` /
`FStringMiddle` tokens are present but the `FStringEnd` token isn't
which means that the `Indexer` won't contain the range for that
f-string.
## Test Plan
`cargo test`
Taking the following code as an example:
```python
f"{123}
```
This only emits a `FStringStart` token, but no `FStringMiddle` or
`FStringEnd` tokens.
And,
```python
f"\.png${
```
This emits a `FStringStart` and `FStringMiddle` token, but no
`FStringEnd` token.
fixes: #8065
## Summary
Explain the meaning of the icon for screen readers (and mouse over).
Hide "inactive" (low opacity) icons from screen readers.
Remove opacity: 1 styling, it's the default opacity.
Without this change a screen reader will just read "Hammer and spanner
test tube" for the last column in each row.
## Summary
Based on [this
feedback](https://github.com/astral-sh/ruff/issues/8185#issuecomment-1780092525).
Avoid warning about `force-wrap-aliases` and `split-on-trailing-comma`
if `force-single-line` is true (which creates a dedicated import for
each imported member).
## Test Plan
Ran `ruff format . --no-cache` and verified that the warning show up
when `force-single-line=false` and aren't shown when
`force-single-line=true`
## Summary
This PR fixes the `W605` rule implementation to provide the quickfix
message as
per the fix provided.
## Test Plan
Update snapshots.
fixes: #8155
## Summary
Avoid warning about incompatible rules except if their configuration
directly conflicts with the formatter. This should reduce the noise and
potentially the need for https://github.com/astral-sh/ruff/issues/8175
and https://github.com/astral-sh/ruff/issues/8185
I also extended the rule and option documentation to mention any
potential formatter incompatibilities or whether they're redundant when
using the formatter.
* `LineTooLong`: This is a use case we explicitly want to support. Don't
warn about it
* `TabIndentation`, `IndentWithSpaces`: Only warn if
`indent-style="tab"`
* `IndentationWithInvalidMultiple`,
`IndentationWithInvalidMultipleComment`: Only warn if `indent-width !=
4`
* `OverIndented`: Don't warn, but mention that the rule is redundant
* `BadQuotesInlineString`: Warn if quote setting is different from
`format.quote-style`
* `BadQuotesMultilineString`, `BadQuotesDocstring`: Warn if `quote !=
"double"`
## Test Plan
I added a new integration test for the default configuration with `ALL`.
`ruff format` now only shows two incompatible rules, which feels more
reasonable.
## Summary
This rule is now unsafe if we can't verify that the `obj` in `raise
obj()` is a class or builtin. (If we verify that it's a function, we
don't raise at all, as before.)
See the documentation change for motivation behind the unsafe edit.
Closes https://github.com/astral-sh/ruff/issues/8228.
**Summary** Prepare for the black preview style becoming the black
stable style at the end of the year.
This adds a new test file to compare stable and preview on some relevant
preview options in black, and makes `format_dev` understand the black
preview flag. I've added poetry as a project that uses preview.
I've implemented one specific deviation (collapsing of stub
implementation in non-stub files) which showed up in poetry for testing.
This also improves poetry compatibility from 0.99891 to 0.99919.
Fixes#7440
New compatibility stats:
| project | similarity index | total files | changed files |
|----------------|------------------:|------------------:|------------------:|
| cpython | 0.75803 | 1799 | 1647 |
| django | 0.99983 | 2772 | 35 |
| home-assistant | 0.99953 | 10596 | 189 |
| poetry | 0.99919 | 317 | 12 |
| transformers | 0.99963 | 2657 | 332 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99978 | 3669 | 20 |
| warehouse | 0.99969 | 654 | 15 |
| zulip | 0.99970 | 1459 | 22 |
## Summary
This PR refactors the formatter diff code to reuse the
`SourceKind::diff` logic. This has the benefit that the Notebook diff
now includes the cell numbers which was not present before.
## Test Plan
Update the snapshots and verified the cell numbers.
## Summary
Given:
```python
# comment
class A:
def foo(self):
pass
```
We need to insert an additional newline between `# comment` and `class
A`. We were missing this handling for the case in which `# comment` is a
leading comment on `class A`, as opposed to a trailing comment of some
preceding statement.
In practice, I think this only applies to the specific case in which a
class or function is the first statement in a module, and there's a
single empty line between a leading comment and that class or function.
If there are no empty lines, then the comment "sticks" to the
definition; if there are two or more, then `leading_comments` will
truncate appropriately. If the class or function is nested, then we only
need one empty line anyway.
Closes https://github.com/astral-sh/ruff/issues/8215.
## Test Plan
No change in similarity.
Before:
| project | similarity index | total files | changed files |
|----------------|------------------:|------------------:|------------------:|
| cpython | 0.75803 | 1799 | 1647 |
| django | 0.99983 | 2772 | 34 |
| home-assistant | 0.99953 | 10596 | 186 |
| poetry | 0.99891 | 317 | 17 |
| transformers | 0.99966 | 2657 | 330 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99978 | 3669 | 20 |
| warehouse | 0.99977 | 654 | 13 |
| zulip | 0.99970 | 1459 | 22 |
After:
| project | similarity index | total files | changed files |
|----------------|------------------:|------------------:|------------------:|
| cpython | 0.75803 | 1799 | 1648 |
| django | 0.99983 | 2772 | 34 |
| home-assistant | 0.99953 | 10596 | 186 |
| poetry | 0.99891 | 317 | 17 |
| transformers | 0.99966 | 2657 | 330 |
| twine | 1.00000 | 33 | 0 |
| typeshed | 0.99978 | 3669 | 20 |
| warehouse | 0.99977 | 654 | 13 |
| zulip | 0.99970 | 1459 | 22 |
## Summary
This PR removes the `todo!()` around `IpyEscapeCommand` in the
formatter.
The `NeedsParentheses` trait needs to be implemented which always return
`Never`. The reason being that if an escape command is parenthesized,
then that's not parsed as an escape command. IOW, the parentheses
shouldn't be present around an escape command.
In the similar way, the `CanSkipOptionalParenthesesVisitor` will skip
this node.
## Test Plan
Updated the `unformatted.ipynb` fixture with new cells containing
IPython escape commands and the corresponding snapshot was verified.
Also, tested it out in a few open source repositories containing
notebooks (`openai/openai-cookbook`, `huggingface/notebooks`).
#### New cells in `unformatted.ipynb`
**Cell 2**
```markdown
A markdown cell
```
**Cell 3**
```python
def some_function(foo, bar):
pass
%matplotlib inline
```
**Cell 4**
```python
foo = %pwd
def some_function(foo,bar,):
foo = %pwd
print(foo
)
```
fixes: #8204
## Summary
This PR fixes the bug where if a Notebook contained IPython syntax, then
the format command would fail. This was because the correct mode was not
being used while parsing through the formatter code path.
## Test Plan
This PR isn't the only requirement for Notebook formatting to start
working with IPython escape commands. The following PR in the stack is
required as well.
## Summary
Python 3.12 added the `__buffer__()`/`__release_buffer_()` special
methods, which are incorrectly flagged as invalid dunder methods by
`PLW3201`.
## Test Plan
Added definitions to the test suite, and confirmed they failed without
the fix and are ignored after the fix was done.
## Summary
Related to https://github.com/astral-sh/ruff/issues/8135.
If we're not printing a `--diff`, or a summary of `--check` changes, we
can avoid sorting the list of results. Further, when sorting, we only
need to sort a small subset of the entries, in the common case (i.e., in
general, it's much more likely that a file is formatted than not).
## Test Plan
Local benchmarks suggest a 5-10% speedup on the cached behavior:
```
❯ hyperfine --warmup 3 "./target/release/ruff format ../airflow" "./target/release/sort format ../airflow"
Benchmark 1: ./target/release/ruff format ../airflow
Time (mean ± σ): 70.3 ms ± 5.2 ms [User: 52.1 ms, System: 59.0 ms]
Range (min … max): 68.3 ms … 101.7 ms 42 runs
Warning: Statistical outliers were detected. Consider re-running this benchmark on a quiet PC without any interferences from other programs. It might help to use the '--warmup' or '--prepare' options.
Benchmark 2: ./target/release/sort format ../airflow
Time (mean ± σ): 66.0 ms ± 1.4 ms [User: 48.3 ms, System: 58.4 ms]
Range (min … max): 64.7 ms … 71.8 ms 44 runs
Warning: Statistical outliers were detected. Consider re-running this benchmark on a quiet PC without any interferences from other programs. It might help to use the '--warmup' or '--prepare' options.
Summary
'./target/release/sort format ../airflow' ran
1.07 ± 0.08 times faster than './target/release/ruff format ../airflow'
```
## Summary
This PR renames the `tab-size` configuration option to `indent-width` to
express that the formatter uses the option to determine the indentation
width AND as tab width.
I first preferred naming the option `tab-width` but then decided to go
with `indent-width` because:
* It aligns with the `indent-style` option
* It would allow us to write a lint rule that asserts that each
indentation uses `indent-width` spaces.
Closes#7643
## Test Plan
Added integration test
## Summary
This PR introduces a new `pycodestyl.max-line-length` option that allows overriding the global `line-length` option for `E501` only.
This is useful when using the formatter and `E501` together, where the formatter uses a lower limit and `E501` is only used to catch extra-long lines.
Closes#7644
## Considerations
~~Our fix infrastructure asserts in some places that the fix doesn't exceed the configured `line-width`. With this change, the question is whether it should use the `pycodestyle.max-line-width` or `line-width` option to make that decision.
I opted for the global `line-width` for now, considering that it should be the lower limit. However, this constraint isn't enforced and users not using the formatter may only specify `pycodestyle.max-line-width` because they're unaware of the global option (and it solves their need).~~
~~I'm interested to hear your thoughts on whether we should use `pycodestyle.max-line-width` or `line-width` to decide on whether to emit a fix or not.~~
Edit: The linter users `pycodestyle.max-line-width`. The `line-width` option has been removed from the `LinterSettings`
## Test Plan
Added integration test. Built the documentation and verified that the links are correct.
## Summary
First time contribute to `ruff`, so If there are low-level errors,
please forgive me. 🙇
Introduce auto fix for `E275`, this partially address #8121.
## Test Plan
Already coverd.
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
Close#8123
## Test Plan
<!-- How was it tested? -->
New test cases
---------
Signed-off-by: harupy <hkawamura0130@gmail.com>
## Summary
This was just a bug in the parser ranges, probably since it was
initially implemented. Given `match n % 3, n % 5: ...`, the "subject"
(i.e., the tuple of two binary operators) was using the entire range of
the `match` statement.
Closes https://github.com/astral-sh/ruff/issues/8091.
## Test Plan
`cargo test`
## Summary
This PR updates our E721 implementation and semantics to match the
updated `pycodestyle` logic, which I think is an improvement.
Specifically, we now allow `type(obj) is int` for exact type
comparisons, which were previously impossible. So now, we're largely
just linting against code like `type(obj) == int`.
This change is gated to preview mode.
Closes https://github.com/astral-sh/ruff/issues/7904.
## Test Plan
Updated the test fixture and ensured parity with latest Flake8.
## Summary
This PR updates our documentation for the upcoming formatter release.
Broadly, the documentation is now structured as follows:
- Overview
- Tutorial
- Installing Ruff
- The Ruff Linter
- Overview
- `ruff check`
- Rule selection
- Error suppression
- Exit codes
- The Ruff Formatter
- Overview
- `ruff format`
- Philosophy
- Configuration
- Format suppression
- Exit codes
- Black compatibility
- Known deviations
- Configuring Ruff
- pyproject.toml
- File discovery
- Configuration discovery
- CLI
- Shell autocompletion
- Preview
- Rules
- Settings
- Integrations
- `pre-commit`
- VS Code
- LSP
- PyCharm
- GitHub Actions
- FAQ
- Contributing
The major changes include:
- Removing the "Usage" section from the docs, and instead folding that
information into "Integrations" and the new Linter and Formatter
sections.
- Breaking up "Configuration" into "Configuring Ruff" (for generic
configuration), and new Linter- and Formatter-specific sections.
- Updating all example configurations to use `[tool.ruff.lint]` and
`[tool.ruff.format]`.
My suggestion is to pull and build the docs locally, and review by
reading them in the browser rather than trying to parse all the code
changes.
Closes https://github.com/astral-sh/ruff/issues/7235.
Closes https://github.com/astral-sh/ruff/issues/7647.
Adds a new `ruff version` sub-command which displays long version
information in the style of `cargo` and `rustc`. We include the number
of commits since the last release tag if its a development build, in the
style of Python's versioneer.
```
❯ ruff version
ruff 0.1.0+14 (947940e91 2023-10-18)
```
```
❯ ruff version --output-format json
{
"version": "0.1.0",
"commit_info": {
"short_commit_hash": "947940e91",
"commit_hash": "947940e91269f20f6b3f8f8c7c63f8e914680e80",
"commit_date": "2023-10-18",
"last_tag": "v0.1.0",
"commits_since_last_tag": 14
}
}%
```
```
❯ cargo version
cargo 1.72.1 (103a7ff2e 2023-08-15)
```
## Test plan
I've tested this manually locally, but want to at least add unit tests
for the message formatting. We'd also want to check the next release to
ensure the information is correct.
I checked build behavior with a detached head and branches.
## Future work
We could include rustc and cargo versions from the build, the current
Python version, and other diagnostic information for bug reports.
The `--version` and `-V` output is unchanged. However, we could update
it to display the long ruff version without the rust and cargo versions
(this is what cargo does). We'll need to be careful to ensure this does
not break downstream packages which parse our version string.
```
❯ ruff --version
ruff 0.1.0
```
The LSP should be updated to use `ruff version --output-format json`
instead of parsing `ruff --version`.
This is my first PR and I'm new at rust, so feel free to ask me to
rewrite everything if needed ;)
The rule must be called after deferred lambas have been visited because
of the last check (whether the lambda parameters are used in the body of
the function that's being called). I didn't know where to do it, so I
did what I could to be able to work on the rule itself:
- added a `ruff_linter::checkers::ast::analyze::lambda` module
- build a vec of visited lambdas in `visit_deferred_lambdas`
- call `analyze::lambda` on the vec after they all have been visited
Building that vec of visited lambdas was necessary so that bindings
could be properly resolved in the case of nested lambdas.
Note that there is an open issue in pylint for some false positives, do
we need to fix that before merging the rule?
https://github.com/pylint-dev/pylint/issues/8192
Also, I did not provide any fixes (yet), maybe we want do avoid merging
new rules without fixes?
## Summary
Checks for lambdas whose body is a function call on the same arguments
as the lambda itself.
### Bad
```python
df.apply(lambda x: str(x))
```
### Good
```python
df.apply(str)
```
## Test Plan
Added unit test and snapshot.
Manually compared pylint and ruff output on pylint's test cases.
## References
- [pylint
documentation](https://pylint.readthedocs.io/en/latest/user_guide/messages/warning/unnecessary-lambda.html)
- [pylint
implementation](https://github.com/pylint-dev/pylint/blob/main/pylint/checkers/base/basic_checker.py#L521-L587)
- https://github.com/astral-sh/ruff/issues/970
## Summary
The lint checks for number of arguments in a function *definition*, but
the message says “function *call*”
## Test Plan
See what breaks and change the tests
Given `print(*a_list_with_elements, sep="\n")`, we can't remove the
separator (unlike in `print(a, sep="\n")`), since we don't know how many
arguments were provided.
Closes https://github.com/astral-sh/ruff/issues/8078.
- Add changelog entry for 0.1.1
- Bump version to 0.1.1
- Require preview for fix added in #7967
- Allow duplicate headings in changelog (markdownlint setting)
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## Summary
Fixes https://github.com/astral-sh/ruff/issues/7448
Fixes https://github.com/astral-sh/ruff/issues/7892
I've removed automatic dangling comment formatting, we're doing manual
dangling comment formatting everywhere anyway (the
assert-all-comments-formatted ensures this) and dangling comments would
break the formatting there.
## Test Plan
New test file.
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
Split out of #8044: In preview style, ellipsis are also collapsed in
non-stub files. This should only affect function/class contexts since
for other statements stub are generally not used. I've updated our tests
to use `pass` instead to reflect this, which makes tracking the preview
style changes much easier.
## Summary
Given an expression like `[x for (x) in y]`, we weren't skipping over
parentheses when searching for the `in` between `(x)` and `y`.
Closes https://github.com/astral-sh/ruff/issues/8053.
## Summary
In #6157 a warning was introduced when users use `ruff: noqa`
suppression in-line instead of at the file-level. I had this trigger
today after forgetting about it, and the warning is an excellent
improvement.
I knew immediately what the issue was because I raised it previously,
but on reading the warning I'm not sure it would be so obvious to all
users. This PR extends the error with a short sentence explaining that
line-level suppression should omit the `ruff:` prefix.
## Test Plan
Not sure it's necessary for such a trivial change :)
**Summary** `ruff format --diff` is similar to `ruff format --check`,
but we don't only error with the list of file that would be formatted,
but also show a diff between the unformatted input and the formatted
output.
```console
$ ruff format --diff scratch.py scratch.pyi scratch.ipynb
warning: `ruff format` is not yet stable, and subject to change in future versions.
--- scratch.ipynb
+++ scratch.ipynb
@@ -1,3 +1,4 @@
import numpy
-maths = (numpy.arange(100)**2).sum()
-stats= numpy.asarray([1,2,3,4]).median()
+
+maths = (numpy.arange(100) ** 2).sum()
+stats = numpy.asarray([1, 2, 3, 4]).median()
--- scratch.py
+++ scratch.py
@@ -1,3 +1,3 @@
x = 1
-y=2
+y = 2
z = 3
2 files would be reformatted, 1 file left unchanged
```
With `--diff`, the summary message gets printed to stderr to allow e.g.
`ruff format --diff . > format.patch`.
At the moment, jupyter notebooks are formatted as code diffs, while
everything else is a real diff that could be applied. This means that
the diffs containing jupyter notebooks are not real diffs and can't be
applied. We could change this to json diffs, but they are hard to read.
We could also split the diff option into a human diff option, where we
deviate from the machine readable diff constraints, and a proper machine
readable, appliable diff output that you can pipe into other tools.
To make the tests work, the results (and errors, if any) are sorted
before printing them. Previously, the print order was random, i.e. two
identical runs could have different output.
Open question: Should this go into the markdown docs? Or will this be
subsumed by the integration of the formatter into `ruff check`?
**Test plan** Fixtures for the change and no change cases, including a
jupyter notebook and for file input and stdin.
Fixes#7231
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
**Summary** Insert a newline after nested function and class
definitions, unless there is a trailing own line comment.
We need to e.g. format
```python
if platform.system() == "Linux":
if sys.version > (3, 10):
def f():
print("old")
else:
def f():
print("new")
f()
```
as
```python
if platform.system() == "Linux":
if sys.version > (3, 10):
def f():
print("old")
else:
def f():
print("new")
f()
```
even though `f()` is directly preceded by an if statement, not a
function or class definition. See the comments and fixtures for trailing
own line comment handling.
**Test Plan** I checked that the new content of `newlines.py` matches
black's formatting.
---------
Co-authored-by: Charlie Marsh <charlie.r.marsh@gmail.com>
## Summary
When linting, we store a map from file path to fixes, which we then use
to show a fix summary in the printer.
In the printer, we assume that if the map is non-empty, then we have at
least one fix. But this isn't enforced by the fix struct, since you can
have an entry from (file path) to (empty fix table). In practice, this
only bites us when linting from `stdin`, since when linting across
multiple files, we have an `AddAssign` on `Diagnostics` that avoids
adding empty entries to the map. When linting from `stdin`, we create
the map directly, and so it _is_ possible to have a non-empty map that
doesn't contain any fixes, leading to a panic.
This PR introduces a dedicated struct to make these constraints part of
the formal interface.
Closes https://github.com/astral-sh/ruff/issues/8027.
## Test Plan
`cargo test` (notice two failures are removed)
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## Summary
In https://github.com/astral-sh/ruff/pull/7968, I introduced a
regression whereby we started to treat imports used _only_ in type
annotation bounds (with `__future__` annotations) as unused.
The root of the issue is that I started using `visit_annotation` for
these bounds. So we'd queue up the bound in the list of deferred type
parameters, then when visiting, we'd further queue it up in the list of
deferred type annotations... Which we'd then never visit, since deferred
type annotations are visited _before_ deferred type parameters.
Anyway, the better solution here is to use a dedicated flag for these,
since they have slightly different behavior than type annotations.
I've also fixed what I _think_ is a bug whereby we previously failed to
resolve `Callable` in:
```python
type RecordCallback[R: Record] = Callable[[R], None]
from collections.abc import Callable
```
IIUC, the values in type aliases should be evaluated lazily, like type
parameters.
Closes https://github.com/astral-sh/ruff/issues/8017.
## Test Plan
`cargo test`
## Summary
Rule B005 of flake8-bugbear docs has a typo in one of the examples that
leads to a confusion in the correctness of `.strip()` method
```python
# Wrong output (used in docs)
"text.txt".strip(".txt") # "ex"
# Correct output
"text.txt".strip(".txt") # "e"
```
## Summary
Fix a typo in the docs for quote style.
> a = "a string without any quotes"
> b = "It's monday morning"
> Ruff will change a to use single quotes when using quote-style =
"single". However, a will be unchanged, as converting to single quotes
would require the inner ' to be escaped, which leads to less readable
code: 'It\'s monday morning'.
It should read "However, **b** will be unchanged".
## Test Plan
N/A.
## Summary
### What it does
This rule triggers an error when a bare raise statement is not in an
except or finally block.
### Why is this bad?
If raise statement is not in an except or finally block, there is no
active exception to
re-raise, so it will fail with a `RuntimeError` exception.
### Example
```python
def validate_positive(x):
if x <= 0:
raise
```
Use instead:
```python
def validate_positive(x):
if x <= 0:
raise ValueError(f"{x} is not positive")
```
## Test Plan
Added unit test and snapshot.
Manually compared ruff and pylint outputs on pylint's tests.
## References
- [pylint
documentation](https://pylint.pycqa.org/en/stable/user_guide/messages/error/misplaced-bare-raise.html)
- [pylint
implementation](https://github.com/pylint-dev/pylint/blob/main/pylint/checkers/exceptions.py#L339)
See the provided breaking changes note for details.
Removes support for the deprecated `--format`option in the `ruff check`
CLI, `format` inference as `output-format` in the configuration file,
and the `RUFF_FORMAT` environment variable.
The error message for use of `format` in the configuration file could be
better, but would require some awkward serde wrappers and it seems hard
to present the correct schema to the user still.
## Summary
Given `type RecordOrThings = Record | int | str`, the right-hand side
won't be evaluated at runtime. Same goes for `Record` in `type
RecordCallback[R: Record] = Callable[[R], None]`. This PR modifies the
visitation logic to treat them as typing-only.
Closes https://github.com/astral-sh/ruff/issues/7966.
## Summary
Unlike other filepath-based settings, the `cache-dir` wasn't being
resolved relative to the project root, when specified as an absolute
path.
Closes https://github.com/astral-sh/ruff/issues/7958.
## Summary
This PR adds a new `cell` field to the JSON output format which
indicates the Notebook cell this diagnostic (and fix) belongs to. It
also updates the location for the diagnostic and fixes as per the
`NotebookIndex`. It will be used in the VSCode extension to display the
diagnostic in the correct cell.
The diagnostic and edit start and end source locations are translated
for the notebook as per the `NotebookIndex`. The end source location for
an edit needs some special handling.
### Edit end location
To understand this, the following context is required:
1. Visible lines in Jupyter Notebook vs JSON array strings: The newline
is part of the string in the JSON format. This means that if there are 3
visible lines in a cell where the last line is empty then the JSON would
contain 2 strings in the source array, both ending with a newline:
**JSON format:**
```json
[
"# first line\n",
"# second line\n",
]
```
**Notebook view:**
```python
1 # first line
2 # second line
3
```
2. If an edit needs to remove an entire line including the newline, then
the end location would be the start of the next row.
To remove a statement in the following code:
```python
import os
```
The edit would be:
```
start: row 1, col 1
end: row 2, col 1
```
Now, here's where the problem lies. The notebook index doesn't have any
information for row 2 because it doesn't exists in the actual notebook.
The newline was added by Ruff to concatenate the source code and it's
removed before writing back. But, the edit is computed looking at that
newline.
This means that while translating the end location for an edit belong to
a Notebook, we need to check if both the start and end location belongs
to the same cell. If not, then the end location should be the first
character of the next row and if so, translate that back to the last
character of the previous row. Taking the above example, the translated
location for Notebook would be:
```
start: row 1, col 1
end: row 1, col 10
```
## Test Plan
Add test cases for notebook output in the JSON format and update
existing snapshots.
## Summary
This PR refactors the `NotebookIndex` struct to use `OneIndexed` to make
the
intent of the code clearer.
## Test Plan
Update the existing test case and run `cargo test` to verify the change.
- [x] Verify `--diff` output
- [x] Verify the diagnostics output
- [x] Verify `--show-source` output
**Summary** Handle comment before the default values of function
parameters correctly by inserting a line break instead of space after
the equals sign where required.
```python
def f(
a = # parameter trailing comment; needs line break
1,
b =
# default leading comment; needs line break
2,
c = ( # the default leading can only be end-of-line with parentheses; no line break
3
),
d = (
# own line leading comment with parentheses; no line break
4
)
)
```
Fixes#7603
**Test Plan** Added the different cases and one more complex case as
fixtures.
## Summary
This PR fixes the bug where the rule `E251` was being triggered on a equal token
inside a f-string which was used in the context of debug expressions.
For example, the following was being flagged before the fix:
```python
print(f"{foo = }")
```
But, now it is not. This leads to false negatives such as:
```python
print(f"{foo(a = 1)}")
```
One solution would be to know if the opened parentheses was inside a f-string or
not. If it was then we can continue flagging until it's closed. If not, then we
should not flag it.
## Test Plan
Add new test cases and check that they don't raise any false positives.
fixes: #7882
## Summary
`foo(**{})` was an overlooked edge case for `PIE804` which introduced a
crash within the Fix, introduced in #7884.
I've made it so that `foo(**{})` turns into `foo()` when applied with
`--fix`, but is that desired/expected? 🤔 Should we just ignore instead?
## Test Plan
`cargo test`
Closes https://github.com/astral-sh/ruff/issues/7572
Drops formatting specific rules from the default rule set as they
conflict with formatters in general (and in particular, conflict with
our formatter). Most of these rules are in preview, but the removal of
`line-too-long` and `mixed-spaces-and-tabs` is a change to the stable
rule set.
## Example
The following no longer raises `E501`
```
echo "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx = 1" | ruff check -
```
## Summary
Throughout the codebase, we have this pattern:
```rust
let mut diagnostic = ...
if checker.patch(Rule::UnusedVariable) {
// Do the fix.
}
diagnostics.push(diagnostic)
```
This was helpful when we computed fixes lazily; however, we now compute
fixes eagerly, and this is _only_ used to ensure that we don't generate
fixes for rules marked as unfixable.
We often forget to add this, and it leads to bugs in enforcing
`--unfixable`.
This PR instead removes all of these checks, moving the responsibility
of enforcing `--unfixable` up to `check_path`. This is similar to how
@zanieb handled the `--extend-unsafe` logic: we post-process the
diagnostics to remove any fixes that should be ignored.
## Summary
Add autofix for `PLR1714` using tuples.
If added complexity is desired, we can lean into the `set` part by doing
some kind of builtin check on all of the comparator elements for
starters, since we otherwise don't know if something's hashable.
## Test Plan
`cargo test`, and manually.
**Summary** Remove spaces from import statements such as
```python
import tqdm . tqdm
from tqdm . auto import tqdm
```
See also #7760 for a better solution.
**Test Plan** New fixtures
**Summary** Quoting of f-strings can change if they are triple quoted
and only contain single quotes inside.
Fixes#6841
**Test Plan** New fixtures
---------
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
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## Summary
<!-- What's the purpose of the change? What does it do, and why? -->
closes https://github.com/astral-sh/ruff/issues/7912
## Test Plan
<!-- How was it tested? -->
Adds two configuration-file only settings `extend-safe-fixes` and
`extend-unsafe-fixes` which can be used to promote and demote the
applicability of fixes for rules.
Fixes with `Never` applicability cannot be promoted.
## Summary
Given:
```python
baz: Annotated[
str,
[qux for qux in foo],
]
```
We treat `baz` as `BindingKind::Annotation`, to ensure that references
to `baz` are marked as unbound. However, we were _also_ treating `qux`
as `BindingKind::Annotation`, which meant that the load in the
comprehension _also_ errored.
Closes https://github.com/astral-sh/ruff/issues/7879.
## Summary
This PR upgrades some rules from "sometimes" to "always" fixes, now that
we're getting ready to ship support in the CLI. The focus here was on
identifying rules for which the diagnostic itself is high-confidence,
and the fix itself is too (assuming that the diagnostic is correct).
This is _unlike_ rules that _may_ be a false positive, like those that
(e.g.) assume an object is a dictionary when you call `.values()` on it.
Specifically, I upgraded:
- A bunch of rules that only apply to `.pyi` files.
- Rules that rewrite deprecated imports or aliases.
- Some other misc. rules, like: `empty-print-string`, `unused-noqa`,
`getattr-with-constant`.
Open to feedback on any of these.
## Summary
Adds autofix to `PYI030`
Closes#7854.
Unsure if the cloning method I chose is the best solution here, feel
free to suggest alternatives!
## Test Plan
`cargo test` as well as manually
## Summary
Restores functionality of #7875 but in the correct place. Closes#7877.
~~I couldn't figure out how to get cargo fmt to work, so hopefully
that's run in CI.~~ Nevermind, figured it out.
## Test Plan
Can see output of json.
## Summary
This PR fixes a bug to disallow f-strings in match pattern literal.
```
literal_pattern ::= signed_number
| signed_number "+" NUMBER
| signed_number "-" NUMBER
| strings
| "None"
| "True"
| "False"
| signed_number: NUMBER | "-" NUMBER
```
Source:
https://docs.python.org/3/reference/compound_stmts.html#grammar-token-python-grammar-literal_pattern
Also,
```console
$ python /tmp/t.py
File "/tmp/t.py", line 4
case "hello " f"{name}":
^^^^^^^^^^^^^^^^^^
SyntaxError: patterns may only match literals and attribute lookups
```
## Test Plan
Update existing test case and accordingly the snapshots. Also, add a new
test case to verify that the parser does raise an error.
## Summary
Fixes#7853.
The old and new source files were reversed in the call to
`TextDiff::from_lines`, so the diff output of the CLI was also reversed.
## Test Plan
Two snapshots were updated in the process, so any reversal should be
caught :)
Closes https://github.com/astral-sh/ruff/issues/7491
Users found it confusing that warnings were displayed when ignoring a
preview rule (which has no effect without `--preview`). While we could
retain the warning with different messaging, I've opted to remove it for
now. With this pull request, we will only warn on `--select` and
`--extend-select` but not `--fixable`, `--unfixable`, `--ignore`, or
`--extend-fixable`.
## Summary
Resolves https://github.com/astral-sh/ruff/issues/7618.
The list of builtin iterator is not exhaustive.
## Test Plan
`cargo test`
``` python
a = [1, 2]
examples = [
enumerate(a),
filter(lambda x: x, a),
map(int, a),
reversed(a),
zip(a),
iter(a),
]
for example in examples:
print(next(example))
```
## Summary
Implement
[`no-single-item-in`](https://github.com/dosisod/refurb/blob/master/refurb/checks/iterable/no_single_item_in.py)
as `single-item-membership-test` (`FURB171`).
Uses the helper function `generate_comparison` from the `pycodestyle`
implementations; this function should probably be moved, but I am not
sure where at the moment.
Update: moved it to `ruff_python_ast::helpers`.
Related to #1348.
## Test Plan
`cargo test`
I noticed that `tracing::instrument` wasn't available with only the
`"std"` feature enabled when trying to run `cargo doc -p
ruff_formatter`.
I could be misunderstanding something, but I couldn't even run the tests
for the crate.
```
ruff on ruff-formatter-tracing [$] is 📦 v0.0.292 via 🦀 v1.72.0
❯ cargo test -p ruff_formatter
Compiling ruff_formatter v0.0.0 (/Users/chrispryer/github/ruff/crates/ruff_formatter)
error[E0433]: failed to resolve: could not find `instrument` in `tracing`
--> crates/ruff_formatter/src/printer/mod.rs:57:16
|
57 | #[tracing::instrument(name = "Printer::print", skip_all)]
| ^^^^^^^^^^ could not find `instrument` in `tracing`
|
note: found an item that was configured out
--> /Users/chrispryer/.cargo/registry/src/index.crates.io-6f17d22bba15001f/tracing-0.1.37/src/lib.rs:959:29
|
959 | pub use tracing_attributes::instrument;
| ^^^^^^^^^^
= note: the item is gated behind the `attributes` feature
For more information about this error, try `rustc --explain E0433`.
error: could not compile `ruff_formatter` (lib) due to previous error
warning: build failed, waiting for other jobs to finish...
error: could not compile `ruff_formatter` (lib test) due to previous error
```
Maybe the idea is to keep this crate minimal, but I figured I'd at least
point this out.
## Summary
Document the performance effects of `itertools.starmap`, including that
it is actually slower than comprehensions in Python 3.12.
Closes#7771.
## Test Plan
`python scripts/check_docs_formatted.py`
After working with the previous change in
https://github.com/astral-sh/ruff/pull/7821 I found the names a bit
unclear and their relationship with the user-facing API muddied. Since
the applicability is exposed to the user directly in our JSON output, I
think it's important that these names align with our configuration
options. I've replaced `Manual` or `Never` with `Display` which captures
our intent for these fixes (only for display). Here, we create room for
future levels, such as `HasPlaceholders`, which wouldn't fit into the
`Always`/`Sometimes`/`Never` levels.
Unlike https://github.com/astral-sh/ruff/pull/7819, this retains the
flat enum structure which is easier to work with.
Previously we just omitted diagnostic summaries when using `--fix` or
`--diff` with a stdin file. Now, we still write the summaries to stderr
instead of the main writer (which is generally stdout but could be
changed by `--output-file`).
Rebase of https://github.com/astral-sh/ruff/pull/5119 authored by
@evanrittenhouse with additional refinements.
## Changes
- Adds `--unsafe-fixes` / `--no-unsafe-fixes` flags to `ruff check`
- Violations with unsafe fixes are not shown as fixable unless opted-in
- Fix applicability is respected now
- `Applicability::Never` fixes are no longer applied
- `Applicability::Sometimes` fixes require opt-in
- `Applicability::Always` fixes are unchanged
- Hints for availability of `--unsafe-fixes` added to `ruff check`
output
## Examples
Check hints at hidden unsafe fixes
```
❯ ruff check example.py --no-cache --select F601,W292
example.py:1:14: F601 Dictionary key literal `'a'` repeated
example.py:2:15: W292 [*] No newline at end of file
Found 2 errors.
[*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).
```
We could add an indicator for which violations have hidden fixes in the
future.
Check treats unsafe fixes as applicable with opt-in
```
❯ ruff check example.py --no-cache --select F601,W292 --unsafe-fixes
example.py:1:14: F601 [*] Dictionary key literal `'a'` repeated
example.py:2:15: W292 [*] No newline at end of file
Found 2 errors.
[*] 2 fixable with the --fix option.
```
Also can be enabled in the config file
```
❯ cat ruff.toml
unsafe-fixes = true
```
And opted-out per invocation
```
❯ ruff check example.py --no-cache --select F601,W292 --no-unsafe-fixes
example.py:1:14: F601 Dictionary key literal `'a'` repeated
example.py:2:15: W292 [*] No newline at end of file
Found 2 errors.
[*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).
```
Diff does not include unsafe fixes
```
❯ ruff check example.py --no-cache --select F601,W292 --diff
--- example.py
+++ example.py
@@ -1,2 +1,2 @@
x = {'a': 1, 'a': 1}
-print(('foo'))
+print(('foo'))
\ No newline at end of file
Would fix 1 error.
```
Unless there is opt-in
```
❯ ruff check example.py --no-cache --select F601,W292 --diff --unsafe-fixes
--- example.py
+++ example.py
@@ -1,2 +1,2 @@
-x = {'a': 1}
-print(('foo'))
+x = {'a': 1, 'a': 1}
+print(('foo'))
\ No newline at end of file
Would fix 2 errors.
```
https://github.com/astral-sh/ruff/pull/7790 will improve the diff
messages following this pull request
Similarly, `--fix` and `--fix-only` require the `--unsafe-fixes` flag to
apply unsafe fixes.
## Related
Replaces #5119
Closes https://github.com/astral-sh/ruff/issues/4185
Closes https://github.com/astral-sh/ruff/issues/7214
Closes https://github.com/astral-sh/ruff/issues/4845
Closes https://github.com/astral-sh/ruff/issues/3863
Addresses https://github.com/astral-sh/ruff/issues/6835
Addresses https://github.com/astral-sh/ruff/issues/7019
Needs follow-up https://github.com/astral-sh/ruff/issues/6962
Needs follow-up https://github.com/astral-sh/ruff/issues/4845
Needs follow-up https://github.com/astral-sh/ruff/issues/7436
Needs follow-up https://github.com/astral-sh/ruff/issues/7025
Needs follow-up https://github.com/astral-sh/ruff/issues/6434
Follow-up #7790
Follow-up https://github.com/astral-sh/ruff/pull/7792
---------
Co-authored-by: Evan Rittenhouse <evanrittenhouse@gmail.com>
## Summary
This PR updates the parser definition to use the precise location when reporting
an invalid f-string conversion flag error.
Taking the following example code:
```python
f"{foo!x}"
```
On earlier version,
```
Error: f-string: invalid conversion character at byte offset 6
```
Now,
```
Error: f-string: invalid conversion character at byte offset 7
```
This becomes more useful when there's whitespace between `!` and the flag value
although that is not valid but we can't detect that now.
## Test Plan
As mentioned above.
## Summary
This PR resolves an issue raised in
https://github.com/astral-sh/ruff/discussions/7810, whereby we don't fix
an f-string that exceeds the line length _even if_ the resultant code is
_shorter_ than the current code.
As part of this change, I've also refactored and extracted some common
logic we use around "ensuring a fix isn't breaking the line length
rules".
## Test Plan
`cargo test`
## Summary
The implementation here differs from the non-`stdin` version -- this is
now more consistent.
## Test Plan
```
❯ cat Untitled.ipynb | cargo run -p ruff_cli -- check --stdin-filename Untitled.ipynb --diff -n
Finished dev [unoptimized + debuginfo] target(s) in 0.11s
Running `target/debug/ruff check --stdin-filename Untitled.ipynb --diff -n`
--- Untitled.ipynb:cell 2
+++ Untitled.ipynb:cell 2
@@ -1 +0,0 @@
-import os
--- Untitled.ipynb:cell 4
+++ Untitled.ipynb:cell 4
@@ -1 +0,0 @@
-import sys
```
## Summary
This PR fixes the bug where the formatter would panic if a class/function with
decorators had a suppression comment.
The fix is to use to correct start location to find the `async`/`def`/`class`
keyword when decorators are present which is the end of the last
decorator.
## Test Plan
Add test cases for the fix and update the snapshots.
- Only trigger for immediately adjacent isinstance() calls with the same
target
- Preserve order of or conditions
Two existing tests changed:
- One was incorrectly reordering the or conditions, and is now correct.
- Another was combining two non-adjacent isinstance() calls. It's safe
enough in that example,
but this isn't safe to do in general, and it feels low-value to come up
with a heuristic for
when it is safe, so it seems better to not combine the calls in that
case.
Fixes https://github.com/astral-sh/ruff/issues/7797
## Summary
We now list each changed file when running with `--check`.
Closes https://github.com/astral-sh/ruff/issues/7782.
## Test Plan
```
❯ cargo run -p ruff_cli -- format foo.py --check
Compiling ruff_cli v0.0.292 (/Users/crmarsh/workspace/ruff/crates/ruff_cli)
rgo + Finished dev [unoptimized + debuginfo] target(s) in 1.41s
Running `target/debug/ruff format foo.py --check`
warning: `ruff format` is a work-in-progress, subject to change at any time, and intended only for experimentation.
Would reformat: foo.py
1 file would be reformatted
```
## Summary
Check that the sequence type is a list, set, dict, or tuple before
recommending replacing the `enumerate(...)` call with `range(len(...))`.
Document behaviour so users are aware of the type inference limitation
leading to false negatives.
Closes#7656.
## Summary
This PR fixes a bug in the lexer for f-string format spec where it would
consider the `{{` (double curly braces) as an escape pattern.
This is not the case as evident by the
[PEP](https://peps.python.org/pep-0701/#how-to-produce-these-new-tokens)
as well but I missed the part:
> [..]
> * **If in “format specifier mode” (see step 3), an opening brace ({)
or a closing brace (}).**
> * If not in “format specifier mode” (see step 3), an opening brace ({)
or a closing brace (}) that is not immediately followed by another
opening/closing brace.
## Test Plan
Add a test case to verify the fix and update the snapshot.
fixes: #7778
## Summary
Two of the three listed examples were wrong: one was semantically
incorrect, another was _correct_ but not actually within the scope of
the rule.
Good motivation for us to start linting documentation examples :)
Closes https://github.com/astral-sh/ruff/issues/7773.
## Summary
We'll revert back to the crates.io release once it's up-to-date, but
better to get this out now that Python 3.12 is released.
## Test Plan
`cargo test`
## Summary
This PR enables `ruff format` to format Jupyter notebooks.
Most of the work is contained in a new `format_source` method that
formats a generic `SourceKind`, then returns `Some(transformed)` if the
source required formatting, or `None` otherwise.
Closes https://github.com/astral-sh/ruff/issues/7598.
## Test Plan
Ran `cat foo.py | cargo run -p ruff_cli -- format --stdin-filename
Untitled.ipynb`; verified that the console showed a reasonable error:
```console
warning: Failed to read notebook Untitled.ipynb: Expected a Jupyter Notebook, which must be internally stored as JSON, but this file isn't valid JSON: EOF while parsing a value at line 1 column 0
```
Ran `cat Untitled.ipynb | cargo run -p ruff_cli -- format
--stdin-filename Untitled.ipynb`; verified that the JSON output
contained formatted source code.
## Summary
When writing back notebooks via `stdout`, we need to write back the
entire JSON content, not _just_ the fixed source code. Otherwise,
writing the output _back_ to the file will yield an invalid notebook.
Closes https://github.com/astral-sh/ruff/issues/7747
## Test Plan
`cargo test`
## Summary
It turns out that _some_ identifiers can contain newlines --
specifically, dot-delimited import identifiers, like:
```python
import foo\
.bar
```
At present, we print all identifiers verbatim, which causes us to retain
the `\` in the formatted output. This also leads to violating some debug
assertions (see the linked issue, though that's a symptom of this
formatting failure).
This PR adds detection for import identifiers that contain newlines, and
formats them via `text` (slow) rather than `source_code_slice` (fast) in
those cases.
Closes https://github.com/astral-sh/ruff/issues/7734.
## Test Plan
`cargo test`
## Summary
There's no way for users to fix this warning if they're intentionally
using an "invalid" PEP 593 annotation, as is the case in CPython. This
is a symptom of having warnings that aren't themselves diagnostics. If
we want this to be user-facing, we should add a diagnostic for it!
## Test Plan
Ran `cargo run -p ruff_cli -- check foo.py -n` on:
```python
from typing import Annotated
Annotated[int]
```
Tom Kuson
Micha Reiser
Steve C
Charlie Marsh
Dhruv Manilawala
Andrew Gallant
Joffrey Bluthé
Samuel Searles-Bryant
dependabot[bot]
Chaojie
Samuel Cormier-Iijima
Alan Du
Adrian
Jelmer Vernooij
Zanie Blue
maltevesper
Ezra Shaw
Iipin
Alex Bieg
Tuomas Siipola
konsti
Ofek Lev
Vince Chan
Jonas Haag
Tuomas Siipola
Jelmer Vernooij
Alan Du
Jonathan Plasse
Charlie Wilson
Bodo Graumann
Jesse Serrao
Shantanu
Jake Park
doolio
Felix Williams
Kar Petrosyan
Lukasz Piatkowski
Aarni Koskela
qdegraaf
trag1c
Hugo van Kemenade
T-256
Deepyaman Datta
Christopher Covington
Mateusz Sokół
Joshua Bronson
Andrew Shannon Brown
Harutaka Kawamura
Mathieu Kniewallner
Carter Snook
Lukas Burgholzer
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