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ruff/crates/ruff_python_parser
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Brent Westbrook e7b93f93ef
[syntax-errors] Type parameter defaults before Python 3.13 (#16447) 
Summary
--

Detects the presence of a [PEP 696] type parameter default before Python
3.13.

Test Plan
--

New inline parser tests for type aliases, generic functions and generic
classes.

[PEP 696]: https://peps.python.org/pep-0696/#grammar-changes
2025-03-04 16:53:38 +00:00
..
resources [syntax-errors] Type parameter defaults before Python 3.13 (#16447) 2025-03-04 16:53:38 +00:00
src [syntax-errors] Type parameter defaults before Python 3.13 (#16447) 2025-03-04 16:53:38 +00:00
tests [syntax-errors] Type parameter defaults before Python 3.13 (#16447) 2025-03-04 16:53:38 +00:00
Cargo.toml Allow passing ParseOptions to inline tests (#16357) 2025-02-27 10:23:15 -05:00
CONTRIBUTING.md py-fuzzer: recommend using uvx rather than uv run to run the fuzzer (#14645) 2024-11-27 22:19:52 +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.