What are args and kwargs in Python functions?

Can you explain what args and kwargs are in Python functions?

Sure! In Python, *args and **kwargs allow you to pass a variable number of arguments to a function. *args is used for non-keyword arguments, while **kwargs is for keyword arguments.

How do they affect performance in Python?

Using *args and **kwargs can introduce some overhead due to the way Python handles them, but they offer flexibility in function calls.

Can you give me an example of how to use them?

Of course! Here's a simple example:

def my_function(*args, **kwargs):
    print(args)
    print(kwargs)

my_function(1, 2, 3, name='Alice', age=30)

Are there any best practices for using them?

Yes! It's best to use *args and **kwargs when you need flexibility, but avoid overusing them to keep your code clear and maintainable.