python实现简单队列

# -*- coding: utf-8 -*-


class Queue(object):
    """队列"""
    def __init__(self):
        self.__queue = []

    def enqueue(self, item):
        """往队列中添加一个item元素"""
        # 队列中添加频繁
        self.__queue.append(item)
        # # 队列中提取频繁
        # self.__queue.insert(0, item)

    @property
    def dequeue(self):
        """从队列头部删除一个元素"""
        # 队列中添加频繁
        return self.__queue.pop(0)
        # # 队列中提取频繁
        # return self.__queue.pop()

    @property
    def is_empty(self):
        """判断队列是否为空"""
        return not self.__queue

    @property
    def size(self):
        """返回队列元素个数"""
        return len(self.__queue)


if __name__ == '__main__':
    q = Queue()
    print(q.is_empty)
    q.enqueue(0)
    q.enqueue(1)
    q.enqueue(2)
    q.enqueue(3)
    q.enqueue(4)
    q.enqueue(5)
    print(q.is_empty)
    print(q.size)
    print("*"*10)
    print(q.dequeue)
    print(q.dequeue)
    print(q.dequeue)
    print(q.dequeue)
    print(q.dequeue)
    print(q.dequeue)
    print("*" * 10)
    print(q.size)
    print(q.is_empty)