The Python programming language, despite its ease of use, ... the programmer can get beyond the limitations of type conversion to a more flexible model of value assignment. Strings and Values.

Mypy, Pytype, Pyright, and Pyre can help you keep your type-hinted Python code bug-free. Let’s see what each of these useful tools has to offer. In the beginning, Python had no type decorations ...

Microsoft claims in the Readme for the project that Pyright is “typically 5X faster” than other Python type checkers that are themselves written in Python, such as Mypy, Pytype, and Pyre.