ch3.7 队列部分代码运行结果不同

[Narcissus7]

使用队列交换对象，会先输出the queue is empty，然后跳出Consumer。

Python版本：3.6.7
运行结果：

Process Producer : item 160 appended to queue Producer-13
the queue is empty
The size of queue is 1
Process Producer : item 8 appended to queue Producer-13
The size of queue is 2
Process Producer : item 219 appended to queue Producer-13
The size of queue is 3
Process Producer : item 211 appended to queue Producer-13
The size of queue is 4
Process Producer : item 25 appended to queue Producer-13
The size of queue is 5

[laixintao]

好像是会这样，我回头看下。

[S-Yuan137]

将main函数中的consumer的start方法在producer之后可以复现结果

if __name__ == "__main__":
    queue = multiprocessing.Queue()
    process_producer = Producer(queue)
    process_consumer = Consumer(queue)
    process_producer.start()
    process_producer.join()
    process_consumer.start()
    process_consumer.join()

但是我很好奇，按理说不应该是是边产生边消费吗，为何原文代码结果似乎是全部产生完再消费。而且话说这个仓库好几年没有活跃了，是内容过时了吗？我感觉好像也没那么老啊。感谢仓库作者的辛勤工作。