python题目-----queue by list

class queue:    def __init__(self, size = 10):        self.queue = []        self.size = size        self.end = -1    def isFull(self):        if self.end == self.size -1:            return True        else:            return False    def isEmpty(self):        if self.end == -1:            return True        else:            return False    def setsize(self, size):        self.size = size    def getsize(self):        return self.end + 1    def End(self):        return self.end    def In(self, value):        if self.isFull():            raise "queue is full"        else:            self.queue.append(value)            self.end += 1    def Out(self):        if self.isEmpty():            raise "queue is empty"        else:            data = self.queue[0]            self.queue = self.queue[1:]            self.end -= 1            return dataif __name__ == '__main__':    q = queue()    for i in range(1,15):        try:            q.In(i)        except:            print "out of queue"        else:            print("insert %d is ok" % q.queue[q.End()])    print "output all value in queue"    for i in q.queue:        print("%d " % i)    while not q.isEmpty():        ret = q.Out()        print("out %d from queue" % ret)