ruff/crates/ruff_python_parser/resources/valid/statement
Brent Westbrook ab1011ce70
[syntax-errors] Single starred assignment target (#17024)
Summary
--

Detects starred assignment targets outside of tuples and lists like `*a
= (1,)`.

This PR only considers assignment statements. I also checked annotated
assigment statements, but these give a separate error that we already
catch, so I think they're okay not to consider:

```pycon
>>> *a: list[int] = []
  File "<python-input-72>", line 1
    *a: list[int] = []
      ^
SyntaxError: invalid syntax
```

Fixes #13759

Test Plan
--

New inline tests, plus a new `SemanticSyntaxError` for an existing
parser test. I also removed a now-invalid case from an otherwise-valid
test fixture.

The new semantic error leads to two errors for the case below:

```python
*foo() = 42
```

but this matches [pyright] too.

[pyright]: https://pyright-play.net/?code=FQMw9mAUCUAEC8sAsAmAUEA
2025-03-29 12:35:47 -04:00
..
ambiguous_lpar_with_items.py
annotated_assignment.py
assert.py
assignment.py [syntax-errors] Single starred assignment target (#17024) 2025-03-29 12:35:47 -04:00
augmented_assignment.py
class.py
delete.py
for.py
from_import.py
function.py
if.py
import.py
match.py [syntax-errors] Irrefutable case pattern before final case (#16905) 2025-03-26 12:27:16 -04:00
raise.py
return.py
simple.py
try.py
type.py
while.py
with.py