In Python, you can specify default arguments by assigning them a value in the function definition.

def greet(name, message = "Good morning")
    return message + " " + name"

greet("Andy") => "Good morning Andy"

If no value is provided for that argument, the default will be used.

However, you can still override the default by passing a keyword argument.

greet("Andy", "Good afternoon") => "Good afternoon Andy"

Write a function that takes one default argument and returns it.