What is function documentation and why is it important?

What is function documentation and why is it important?

Function documentation refers to the comments and explanations that describe what a function does, its parameters, and its return values. It's important because it helps other developers understand how to use the function correctly.

Can you give me an example of good function documentation?

Sure! A good example would be:

def add(a: int, b: int) -> int:
    """
    Adds two integers and returns the result.

    Parameters:
    a (int): The first integer.
    b (int): The second integer.

    Returns:
    int: The sum of a and b.
    """
    return a + b

How does it help in debugging?

Well-documented functions make it easier to identify issues because you can quickly understand the intended behavior of the function, which aids in pinpointing where things might be going wrong.

What are some common mistakes in function documentation?

Common mistakes include being too vague, not updating documentation when the function changes, and failing to document edge cases or exceptions.