python等待线程池结束 python 线程等待

#!/usr/bin/env python 

 # -*- coding: utf-8 -*- 


 import threading 

 import time 

 def fun(name, ls_name, front_thread = None): 

     ''' 

     线程启动函数 

     通过front_thread来使用线程有序的运行 

     ''' 

     time.clock() 

     time.sleep(2) 

     # 如果front_thread存在，则在front_thread运行完成后，才运行当前线程 

     if front_thread != None: 

         front_thread.join() 

         ls_name.append(name) 

     print "thread %s : %s"% (name, time.clock()) 


 if __name__ == '__main__': 

     ls_result_name = [] 

     ls_thread = [] 

     time.clock() 

     # 逐一启动1000个线程 

     for i in range(0,10): 

         if len(ls_thread) == 0: 

             t = threading.Thread(target=fun, args=(i,ls_result_name,None)) 

         else: 

             t = threading.Thread(target=fun, args=(i,ls_result_name,ls_thread[-1])) 

         t.start() 

         ls_thread.append(t) 


         # 等待所有线程结束 

          

     for t in ls_thread: 

         t.join() 


     print 'ls_result_name:', ls_result_name 

     print "main thread:%s" % time.clock()