python 线程间简单 event 通知

本例只建立了一个线程，实际上可以改为两个线程或者多个线程及多个事件。

• t = threading.Thread(target=*func, args=(event_obj,)) 创建一个线程
• event = threading.Event() 创建一个event
• event.set()设置信号
• event.clear()清除信号
• event.wait()等待信号
  上代码

import threading
import time
count = 1
event1 = threading.Event()
event2 = threading.Event()
event1.clear()
event2.clear()def do(event1,):global countprint('Start thread')while True:try:event1.wait()print('Recieved event1.set() count:%d'%count)event1.clear()time.sleep(1)print('Set Event2')event2.set()except KeyboardInterrupt:print('Exit threading loop')breakt = threading.Thread(target=do, args=(event1,))
t.start()def main_loop():global countwhile True:try:print('set     count:%d'%count)event1.set()event2.wait()print('Recieved event2.set()')time.sleep(1)count += 1event2.clear()except KeyboardInterrupt:print('Exit main loop')breakif __name__=="__main__":main_loop()       

参考文献:

1. python多线程、锁、event事件机制的简单使用
2. 【Python】threading.Event模块控制多线程
3. Python多线程threading用法