Python多线程编程之多线程加锁

 1 #coding:utf-8
 2 import threading
 3 
 4 start_task = 0
 5 task_num = 10000
 6 mu = threading.Lock()   ###通过工厂方法获取一个新的锁对象
 7 
 8 class MyThread(threading.Thread):   ###类MyThread继承基类threading.Thread
 9 
10     def run(self):  ##线程启动的入口函数，子类需重写
11         global start_task
12         global mu
13         global start_task
14 
15         while start_task < task_num:    ##如果任务没有完成，则继续
16             if mu.acquire():    ##加锁
17                 if start_task < task_num:
18                     print start_task
19                     start_task = start_task + 1
20                 mu.release()    ##释放锁
21 
22 def test():
23     thread_all = []
24     for i in range(6):  ##for循环创建6个线程
25         t = MyThread()  ##创建线程
26         thread_all.append(t)
27         t.start()   ###启动线程
28 
29     for i in range(6):
30         thread_all[i].join()    ##等待线程结束
31 
32 if __name__ == "__main__":
33     test()