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## Summary This PR gets rid of the `requirements.in` and `requirements.txt` files in the `scripts/fuzz-parser` directory, and replaces them with `pyproject.toml` and `uv.lock` files. The script is renamed from `fuzz-parser` to `py-fuzzer` (since it can now also be used to fuzz red-knot as well as the parser, following https://github.com/astral-sh/ruff/pull/14566), and moved from the `scripts/` directory to the `python/` directory, since it's now a (uv)-pip-installable project in its own right. I've been resisting this for a while, because conceptually this script just doesn't feel "complicated" enough to me for it to be a full-blown package. However, I think it's time to do this. Making it a proper package has several advantages: - It means we can run it from the project root using `uv run` without having to activate a virtual environment and ensure that all required dependencies are installed into that environment - Using a `pyproject.toml` file means that we can express that the project requires Python 3.12+ to run properly; this wasn't possible before - I've been running mypy on the project locally when I've been working on it or reviewing other people's PRs; now I can put the mypy config for the project in the `pyproject.toml` file ## Test Plan I manually tested that all the commands detailed in `python/py-fuzzer/README.md` work for me locally. --------- Co-authored-by: David Peter <sharkdp@users.noreply.github.com> |
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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.