What are the differences between type annotations and docstrings in Python?

What are the differences between type annotations and docstrings in Python?

Type annotations specify the expected data types of function arguments and return values, while docstrings provide documentation about the function's purpose and usage.

Can you give me an example of each?

Sure! A type annotation example: def add(a: int, b: int) -> int:. A docstring example: """Adds two numbers and returns the result.""".

When should I use type annotations?

Use type annotations for better code clarity, type checking, and to help IDEs provide better support and autocompletion.

Are there any downsides to using type annotations?

One downside is that it can make the code more verbose, and it requires additional effort to maintain the annotations as the code evolves.