What are some common mistakes when using *args and **kwargs in Python?

What are some common mistakes when using *args and **kwargs in Python?

Some common mistakes include not understanding the difference between *args and **kwargs, using them interchangeably, or forgetting to unpack them when passing to functions.

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

Sure! Here's a simple example:

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

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

This will output:

(1, 2, 3)
{'name': 'Alice', 'age': 30}

What happens if I mix them up?

If you mix them up, you might get unexpected results or errors. For example, if you try to pass a dictionary as *args, it will raise a TypeError.

Are there any best practices for using them?

Yes! Always use *args for positional arguments and **kwargs for keyword arguments. Also, document your functions clearly to avoid confusion.