Comment by westurner

TIL RustPython uses Ruff's AST which is fast.

LibCST can modify the AST/CST to do python codemod, now in Rust too;

rustpython-ruff_python_parser: https://crates.io/crates/rustpython-ruff_python_parser .. https://github.com/astral-sh/ruff

LibCST: https://github.com/Instagram/LibCST