What is the typing module in Python?

What is the typing module in Python?

The typing module in Python provides support for type hints, allowing you to specify the expected data types of variables, function parameters, and return values.

Can you give me an example of how to use it?

Sure! Here's a simple example:

from typing import List

def greet_all(names: List[str]) -> None:
    for name in names:
        print(f'Hello, {name}!')

What are some common types I can use with this module?

Common types include int, float, str, List, Dict, Tuple, and Union. You can also create custom types using classes.

Is it mandatory to use the typing module?

No, using the typing module is optional. It's mainly for improving code readability and helping with static type checking.