How can I use static typing in Python?

How can I use static typing in Python?

You can use static typing in Python by utilizing type hints introduced in PEP 484. This allows you to specify the expected data types of variables, function parameters, and return values.

Can you give me an example of type hints in a function?

Sure! Here's a simple example:

def add_numbers(a: int, b: int) -> int:
    return a + b

In this function, a and b are expected to be integers, and the function returns an integer.

What tools can help with static type checking?

You can use tools like mypy, pyright, or the built-in pyre for static type checking in Python. They analyze your code and help catch type errors.

Are there any downsides to using static typing?

One downside is that it can add some verbosity to your code, and it may require additional effort to maintain type annotations, especially in large codebases.