python学习—Day46—Queue模块（一）

最新推荐文章于 2025-06-25 11:43:37 发布

shiyan1sheng

最新推荐文章于 2025-06-25 11:43:37 发布

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本文通过Python实现了一个消息队列的例子，利用多线程处理数据的生产和消费过程。生产者线程向队列中添加数据，而消费者线程则负责从队列中取出并处理奇数和偶数数据。

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消息队列的实现：

#@File :queue_1.py
from threading import Thread
import time
from multiprocessing import Queue

class Proceduer(Thread):
    def __init__(self, queue):
        super(Proceduer, self).__init__()
        self.queue = queue

    def run(self):
        try:
            for i in xrange(1, 10):
                print("put data is {0} to queue".format(i))
                self.queue.put(i)
        except Exception as e:
            print("put data error!")
            raise e

class Consumer_odd(Thread):
    def __init__(self, queue):
        super(Consumer_odd, self).__init__()
        self.queue = queue
    def run(self):
        try:
            while not self.queue.empty:
                number = self.queue.get(block=True, timeout=3)
                if number%2 != 0:
                    print("get {0} from queue ODD".format(number))
                else:
                    self.queue.put(number)
                time.sleep(1)
                print("#######################  ODD time   #####################")
        except Exception as e:
            raise e

class Consumer_even(Thread):
    def __init__(self, queue):
        super(Consumer_even, self).__init__()
        self.queue = queue
    def run(self):
        try:
            while not self.queue.empty:
                number = self.queue.get(block=True, timeout=3)
                if number%2 == 0:
                    print("get {0} from queue even, thread name is: {1}".format(number, self.getName()))
                else:
                    self.queue.put(number)
                time.sleep(1)
                print("#################   even   time   ##########################")
        except Exception as e:
            raise e

def main():
    queue = Queue()
    p = Proceduer(queue=queue)
    p.start()
    p.join()
    time.sleep(1)
    c1 = Consumer_odd(queue=queue)
    c2 = Consumer_even(queue=queue)
    c1.start()
    c2.start()
    p.join()
    c2.join()
    print("All threads terminate!")


if __name__ == '__main__':
    main()

put data is 1 to queue
put data is 2 to queue
put data is 3 to queue
put data is 4 to queue
put data is 5 to queue
put data is 6 to queue
put data is 7 to queue
put data is 8 to queue
put data is 9 to queue
All threads terminate!

与预期结果不符：