History

Jack O'Connor 78bd73f25a [ty] add support for `nonlocal` statements		2025-07-11 09:44:54 -07:00
..
resources	Add syntax error when conversion flag does not immediately follow exclamation mark (#18706 )	2025-06-16 11:44:42 -05:00
src	[ty] add support for `nonlocal` statements	2025-07-11 09:44:54 -07:00
tests	Disallow newlines in format specifiers of single quoted f- or t-strings (#18708 )	2025-06-18 14:56:15 +02:00
CONTRIBUTING.md	Update pre-commit dependencies (#17073 )	2025-03-31 07:42:15 +00:00
Cargo.toml	[ty] Add environment variable to dump Salsa memory usage stats (#18928 )	2025-06-26 21:27:51 +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.