SyPy/Deque.py at master · mateensa/SyPy · GitHub

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class Deque:

    def __init__(self):
        self.items = [];

    def isEmpty(self):
        return self.items == [];

    def addFront(self, item):
        self.items.append(item);

    def addRear(self, item):
        self.items.insert(0, item);

    def removeFront(self):
        return self.items.pop();

    def removeRear(self):
        return  self.items.pop(0);

    def size(self):
        return len(self.items);

    def getElements(self):
        return self.items;

# d=Deque()
# print(d.isEmpty())
# d.addRear(4)
# d.addRear('dog')
# d.addFront('cat')
# d.addFront(True)
# print(d.size())
# print(d.isEmpty())
# d.addRear(8.4)
# print(d.removeRear())
# print(d.removeFront())
# print(d.getElements())