Note: your function should have a default parameter.

If you don't know what that means do some research.

In a class, there are three types of methods: instance methods, class methods, and static methods. Instance methods are defined with a mandatory parameter self, alongside any other required parameters. For class methods, we use the @classmethod decorator before the method and include a mandatory parameter named cls, along with other parameters. Static methods, on the other hand, don't require a decorator and function like normal Python functions without needing a mandatory parameter. When written within a class, they behave as static methods by default, but you can add clarity by using the @staticmethod decorator. Remember it's common practice to use decorators and highly recommended.

In this little assignment you are given a string of space separated numbers

It's already there.