ruff/crates/ruff_python_parser
Bhuminjay Soni 52849a5e68
[syntax-errors] Annotated name cannot be global (#20868)
## Summary

<!-- What's the purpose of the change? What does it do, and why? -->
This PR implements a new semantic syntax error where annotated name
can't be global
example
```
x: int = 1

def f():
    global x
    x: str = "foo"  # SyntaxError: annotated name 'x' can't be global
 ```

## Test Plan

<!-- How was it tested? -->
I have written tests as directed in #17412

---------

Signed-off-by: 11happy <soni5happy@gmail.com>
Signed-off-by: 11happy <bhuminjaysoni@gmail.com>
Co-authored-by: Brent Westbrook <brentrwestbrook@gmail.com>
2025-12-17 08:39:47 -05:00
..
resources Skip over trivia tokens after re-lexing (#21895) 2025-12-11 10:45:18 +00:00
src [syntax-errors] Annotated name cannot be global (#20868) 2025-12-17 08:39:47 -05:00
tests Use datatest for formatter tests (#21933) 2025-12-13 08:02:22 +00:00
CONTRIBUTING.md Update usage instructions and lockfile for py-fuzzer script (#20940) 2025-10-17 15:57:17 +01:00
Cargo.toml Use datatest for formatter tests (#21933) 2025-12-13 08:02:22 +00:00
README.md Add basic docs for the parser crate (#11199) 2024-04-29 17:08:07 +00:00

README.md

Ruff Python Parser

Ruff's Python parser is a hand-written recursive descent parser which can parse Python source code into an Abstract Syntax Tree (AST). It also utilizes the Pratt parsing technique to parse expressions with different precedence.

Try out the parser in the playground.

Python version support

The parser supports the latest Python syntax, which is currently Python 3.12. It does not throw syntax errors if it encounters a syntax feature that is not supported by the target-version. This will be fixed in a future release (see https://github.com/astral-sh/ruff/issues/6591).

Contributing

Refer to the contributing guidelines to get started and GitHub issues with the parser label for issues that need help.