python多线程

import threading

import time





class Mythread(threading.Thread):

    def run(self):

        global num

        if mutex.acquire():

            num+=1

            print num

            mutex.release()



num=0

mutex=threading.Lock()

def test():

    for i in range(5):

        t=Mythread()

        t.start()



if __name__ == '__main__':  

    test()

    

'''

class mythread(threading.Thread):

    def __init__(self,num):

        threading.Thread.__init__(self)

        self.num=num

    def run(self):

        print self.num



for i in range(5):

    t=mythread(i)

    t.start()

#t=threading.Thread(target=run,args=(15,20))

#t.start()       

'''