ruff/crates/ruff_linter
Igor Drokin 673167a565
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[flake8-bugbear] Include certain guaranteed-mutable expressions: tuples, generators, and assignment expressions (B006) (#20024)
## Summary
Resolves #20004

The implementation now supports guaranteed-mutable expressions in the
following cases:
- Tuple literals with mutable elements (supporting deep nesting)
- Generator expressions
- Named expressions (walrus operator) containing mutable components

Preserves original formatting for assignment value:

```python
# Test case
def f5(x=([1, ])):
    print(x)
```
```python
# Fix before
def f5(x=(None)):
    if x is None:
        x = [1]
    print(x)
```
```python
# Fix after 
def f5(x=None):
    if x is None:
        x = ([1, ])
    print(x)
```
The expansion of detected expressions and the new fixes gated behind
previews.

## Test Plan
- Added B006_9.py with a bunch of test cases
- Generated snapshots

---------

Co-authored-by: Igor Drokin <drokinii1017@gmail.com>
Co-authored-by: dylwil3 <dylwil3@gmail.com>
2025-10-03 09:29:36 -05:00
..
resources [flake8-bugbear] Include certain guaranteed-mutable expressions: tuples, generators, and assignment expressions (B006) (#20024) 2025-10-03 09:29:36 -05:00
src [flake8-bugbear] Include certain guaranteed-mutable expressions: tuples, generators, and assignment expressions (B006) (#20024) 2025-10-03 09:29:36 -05:00
Cargo.toml Bump 0.13.3 (#20685) 2025-10-02 14:14:05 -05:00