What are some examples of Python annotations?

Can you explain what Python annotations are?

Python annotations are a way to attach metadata to function arguments and return values, typically used for type hints.

Can you give me some examples of how to use annotations in Python?

Sure! Here's a simple example:

def greet(name: str) -> str:
    return f'Hello, {name}!'

What happens if I don't follow the annotations?

Annotations are not enforced at runtime; they're mainly for documentation and type checking tools. You can still pass any type.

Are there any tools that can help with type checking in Python?

Yes, tools like mypy can be used to check type hints and ensure your code adheres to the specified annotations.