What are the best practices for using type hints in Python 3.10?

What are the best practices for using type hints in Python 3.10?

In Python 3.10, best practices for type hints include using the new syntax for union types, leveraging type aliases, and ensuring clarity in your type annotations.

Can you explain the new syntax for union types?

Sure! In Python 3.10, you can use the pipe symbol (|) to denote union types. For example, instead of writing 'Union[int, str]', you can simply write 'int | str'.

What are type aliases and how do I use them?

Type aliases allow you to create a new name for an existing type. For instance, you can define 'Vector = List[float]' to simplify type annotations in your code.

Are there any tools to help with type hinting?

Yes, tools like mypy and Pyright can help you check type hints in your code and ensure type safety.