python

2: (5 points) When giving the specification for the UnorderedList class, your textbook's authors left the definition of the pop () method as an exercise. Your task now is to add the definition for pop( to the revised UnorderedList class definition that you provided as your solution to Problem 1. Be sure to use and maintain the information about list length that you added in your solution to Problem 1. Here is the specification for the pop() method as given in your book: pop () removes and returns the last item i.e., the tail end, not the head) in the list. It needs nothing as an argument and returns the item. Assume the list has at least one item. Write your pop() method in the space below