How can I use the typing module in Python?

How can I use the typing module in Python?

The typing module in Python provides support for type hints. You can use it to specify the expected data types of function arguments 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(names: List[str]) -> None:
    for name in names:
        print(f'Hello, {name}!')

What are some common types I can use with the typing module?

Common types include List, Dict, Tuple, Set, and Union. Each serves different purposes for type hinting.

Is the typing module available in Python 2?

No, the typing module is available starting from Python 3.5. For Python 2, you would need to use comments for type hints.