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 mixing positional and keyword arguments incorrectly, or forgetting to use ** for kwargs.

Can you give me an example of mixing them up?

Sure! If you define a function like def func(a, b, **kwargs): and call it with func(1, 2, c=3, 4), it will raise an error because positional arguments must come before keyword arguments.

What about using *args? Any common issues?

Yes! A common issue is not unpacking the args correctly. For example, if you call func(*args) but args is not a list or tuple, it will raise a TypeError.

How can I avoid these mistakes?

To avoid these mistakes, always check the order of your arguments, use clear naming conventions, and test your functions with different argument types.