Mypy, a code-linting project created to allow static type checking in Python ... parser that uses a modified version of Python’s standard library module ast to perform application parsing.

To do this, we need to create a Python module object through PyO3 and expose ... they all have to work as 'static. You also can’t use generic parameters on types being used as Python classes.

SEE: Six in-demand programming languages: Getting started (free PDF) To boost developer productivity, Facebook engineers have developed open-source tools like the Python static type checker ...