How do I use type hints in Python?

How do I use type hints in Python?

Type hints in Python allow you to specify the expected data types of function arguments and return values. For example, you can define a function like this: def add(a: int, b: int) -> int:.

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

Sure! Here's a simple example:

def greet(name: str) -> str:
    return f'Hello, {name}!'
``` This function takes a string as an argument and returns a string.

What are the benefits of using type hints?

Type hints improve code readability, help with static type checking, and can assist IDEs in providing better autocompletion and error detection.

Are type hints mandatory in Python?

No, type hints are optional in Python. They are a way to provide additional information but do not enforce type checking at runtime.