What are function annotations in Python 3.10?

Can you explain what function annotations are in Python 3.10?

Function annotations in Python 3.10 are a way to attach metadata to function parameters and return values, enhancing code readability.

How do I use function annotations in my code?

You can use function annotations by adding a colon followed by the annotation after each parameter and using an arrow for the return type. For example: def func(param: int) -> str:.

Are there any benefits to using function annotations?

Yes, they improve code clarity, help with type checking, and can be used by IDEs for better autocompletion and error checking.

Can I use any type of annotation?

Yes, you can use built-in types, custom classes, or even complex types like lists and dictionaries as annotations.