mutex = threading.Lock() #锁的使用 #创建锁 mutex = threading.Lock() #锁定 mutex.acquire([timeout]) #释放 mutex.release()

#!/usr/bin/env python #coding=utf-8 import threading import time   class MyThread(threading.Thread):     def run(self):         global num         time.sleep(1)           if mutex.acquire(1):              num = num+1             msg = self.name+' set num to '+str(num)             print msg             mutex.release() num = 0 mutex = threading.Lock() def test():     for i in range(5):         t = MyThread()         t.start() if __name__ == '__main__':     test() Thread-1 set num to 1 Thread-3 set num to 2 Thread-4 set num to 3 Thread-5 set num to 4 Thread-2 set num to 5