LibCST

LibCST (Concrete Syntax Tree) is a Python library that parses Python 3.0 through 3.14 source code into a CST tree, preserving all formatting details like comments, whitespaces, and parentheses. It offers a compromise between an Abstract Syntax Tree (AST) and a traditional CST, designed for building automated refactoring (codemod) applications and linters. The current version is 1.8.6, and it maintains an active release cadence with frequent updates.