def pop(self):
    '\n\t\tPops an element off the stack. \n\n\t\tTime Complexity: O(1)\n\n\t\tReturns:\n\t\t\tany: the last element on the stack\n\n\t\t'
    x = self.data.pop()
    if (x == self.minimum[(- 1)]):
        self.minimum.pop()
    return x
Pops an element off the stack. 

Time Complexity: O(1)

Returns:
        any: the last element on the stack
def pop(self):
    '\n\t\tPops an element off the stack. \n\n\t\tTime Complexity: O(1)\n\n\t\tReturns:\n\t\t\tany: the last element on the stack\n\n\t\t'
    x = self.data.pop()
    if (x == self.minimum[(- 1)]):
        self.minimum.pop()
    return x