Monday 20:00 Python Practice 21.05.03.

Question:
Base on the explanation about the deque data structure, please finish the following code:

class Deque:
    def __init__(self):
        pass

    def isEmpty(self):
        pass

    def size(self):
        pass

    def addRear(self, item):
        pass

    def addFront(self, item):
        pass

    def removeRear(self):
        pass

    def removeFront(self):
        pass