What are default arguments in Python functions?

What are default arguments in Python functions?

Default arguments in Python allow you to define a function with default values for certain parameters.

Can you give me an example of how to use default arguments?

Sure! Here's a simple example:

def greet(name, greeting='Hello'):
    return f'{greeting}, {name}!'

In this case, if you call greet('Alice'), it will return 'Hello, Alice!'. If you call greet('Alice', 'Hi'), it will return 'Hi, Alice!'.

What happens if I don't provide a value for a default argument?

If you don't provide a value for a default argument, the function will use the default value specified in the function definition.

Can default arguments be mutable types like lists or dictionaries?

Yes, but be cautious! Using mutable types as default arguments can lead to unexpected behavior. It's better to use None and initialize inside the function.