Queue – Python implementation

#QUEUE INMPLEMENTATION
#NOT: this is just a simulation
#for better performances
#use python’s built-in queue

class Queue:
    def __init__(self):
        self.buffer = []
    def enqueue(self, element):
        self.buffer.insert(0,element)
    def dequeue(self):
        return self.buffer.pop()
    def size(self):
        return len(self.buffer)
    def isEmpty(self):
        return self.buffer == []
    def show(self):
        print self.buffer
a = Queue()
a.enqueue(“a”)
a.enqueue(“b”)
a.show()
a.dequeue()
a.show()
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