python3中线程中event的小栗子

Posted 2021-01-05 思辨

import threading, time


class Boss(threading.Thread):
    def run(self):
        print("boss:今晚大家都要加班到22：00")
        print(event.isSet())
        event.set()
        time.sleep(5)
        print("BOSS:<22:00>可以下班了")
        print(event.isSet())
        event.set()


class Worker(threading.Thread):
    def run(self):
        event.wait()
        print("worker:哎，命苦呀")
        time.sleep(1)
        event.clear()
        event.wait()
        print("worker:OH yeah!")


if __name__ == "__main__":
    event = threading.Event()
    threads = []
    for i in range(5):
        threads.append(Worker())
    threads.append(Boss())
    for t in threads:
        t.start()
    for t in threads:
        t.join()



#https://www.cnblogs.com/nuomin/p/7899675.html
#https://www.cnblogs.com/zhangxinqi/p/8284687.html



运行结果：

F:\\Scrapy\\spider3\\Scripts\\python.exe F:/Django1/spider3/threading3.py
boss:今晚大家都要加班到22：00
False
worker:哎，命苦呀
worker:哎，命苦呀
worker:哎，命苦呀
worker:哎，命苦呀
worker:哎，命苦呀
BOSS:<22:00>可以下班了
False
worker:OH yeah!
worker:OH yeah!
worker:OH yeah!
worker:OH yeah!
worker:OH yeah!

Process finished with exit code 0