What are some common mistakes in type annotation?

What are some common mistakes in type annotation?

Common mistakes include using incorrect types, not using type hints at all, and confusing mutable and immutable types.

Can you give examples of incorrect type usage?

Sure! For instance, using 'List' instead of 'List[int]' for a list of integers is a common mistake.

What about type hints in function parameters?

A common mistake is omitting type hints for function parameters, which can lead to confusion about expected input types.

How can I avoid these mistakes?

You can avoid these mistakes by consistently using type hints, reviewing your code, and utilizing static type checkers like mypy.