What are some common mistakes with type hints in Python?

What are some common mistakes with type hints in Python?

Some common mistakes include using incorrect types, not using type hints at all, and confusing optional types.

Can you give me an example of using type hints incorrectly?

Sure! A common mistake is using 'List' without importing it from 'typing', like this: 'def func(x: List):'.

What about using 'Optional'? How can that be misused?

Using 'Optional' incorrectly can happen if you don't specify the type, like 'def func(x: Optional):' instead of 'def func(x: Optional[int]):'.

How can I avoid these mistakes?

To avoid mistakes, always import necessary types, be specific with your type hints, and use type checkers like mypy.