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.

I've grabbed Sequence from the typing module, which includes all three Python sequence types—strings, lists and tuples. Once I do that, all of the mypy problems disappear, because all of the arguments ...

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

Since Python 3.5, type annotations have been gaining traction. For those unfamiliar with type hinting, it’s a completely optional way of annotating your code to specify the types of variables.