max-muoto / codemods

Libcst codemods to help with refactoring/modernization of Python code.

libcst Codemods

Variety of codemods/scripts for libcst, that are helpful for automated refactoring/moderanization of Python code.

Codemods

• ConstantToFinal: Add Final as an annotation to all constant variables (UPPER_UNDERSCORE).
  • Input:

    FOO = 1
    BAR: int = 2
    LIT: Literal[3]

  • Output:

    FOO: Final = 1
    BAR: Final[int] = 2
    LIT: Final[Literal[3]]

  • Flags: -c to include class constants, -s to run the codemod on stubs only.
  • Note: This is more useful for projects using MyPy, or libraries with MyPy users, as Pyright allows you to enforce constants based on convention through the reportConstantRedefinition rule.