Is there another way to implement the
is_empty() method of the
Stack class be implemented?
The purpose of the
is_empty() method is to determine whether the
Stack has any items. One method for doing that is checking the value of
self.size. If the value is 0, then the
Stack is empty. Another option is to check the value of
self.top_item. If the value is
None, then the
Stack is empty.