Using mypy means that you can write and run Python in the normal way, gradually adding static type checking over time and checking it outside your program's execution.

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.

Learn how to use Python’s optional type-hinting syntax to create cleaner and more useful code.