Python线程Event

import threading

 import time

 event=threading.Event()

 class MythreadA(threading.Thread):

     def run(self):

         event.wait()

         print(self.name,":Good Morning")

         event.clear()

         time.sleep(2)

         event.set()

         event.wait()

         time.sleep(2)

         print(self.name,"I am fine tks")

         event.set()

 class MythreadB(threading.Thread):

     def run(self):

         print(self.name,"Good Morning")

         event.set()

         time.sleep(1)

         event.wait()

         print(self.name,"How are you")

         event.clear()

         event.wait()

         event.set()

 def main():

     John=MythreadA()

     John.name="John"

     Simth=MythreadB()

     Simth.name="Simth"

     John.start()

     Simth.start()

 if __name__=="__main__":

     main()