What are variable length arguments in Python?

What are variable length arguments in Python?

Variable length arguments allow you to pass a variable number of arguments to a function in Python. You can use *args for non-keyword arguments and **kwargs for keyword arguments.

Can you give me an example of how to use *args?

Sure! Here's a simple example:

def my_function(*args):
    for arg in args:
        print(arg)

my_function(1, 2, 3)

This will print 1, 2, and 3.

What about **kwargs? How does that work?

**kwargs allows you to pass keyword arguments to a function. Here's an example:

def my_function(**kwargs):
    for key, value in kwargs.items():
        print(f'{key}: {value}')

my_function(name='Alice', age=30)

This will print 'name: Alice' and 'age: 30'.

Are there any limitations to using variable length arguments?

The main limitation is that you can't mix *args and **kwargs in a way that confuses the interpreter. Also, you should be careful with the number of arguments to avoid performance issues.