def dequeue(self):
    if (self._len == 0):
        return False
    else:
        for _ in range((self._len - 2)):
            self.stack_two.push(self.stack_two.pop())
            last = self.stack_one.pop()
        for _ in range((self._len - 2)):
            self.stack_one.push(self.stack_two.pop())
        self._len -= 1
        return last
def dequeue(self):
    if (self._len == 0):
        return False
    else:
        for _ in range((self._len - 2)):
            self.stack_two.push(self.stack_two.pop())
            last = self.stack_one.pop()
        for _ in range((self._len - 2)):
            self.stack_one.push(self.stack_two.pop())
        self._len -= 1
        return last