If you need an explicit self hint for the class that refers to whatever class is in context, and you’re using Python 3.11 or later, you can import Self from the typing module and use that as a hint.

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.

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 ...