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Python线程中对join方法的运用的教程

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Release: 2016-06-06 11:25:01
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join 方法:阻塞线程 , 直到该线程执行完毕

因此  ,可以对join加一个超时操作 , join([timeout]),超过设置时间,就不再阻塞线程

jion加上还有一个后果就是, 子线程和主线程绑定在一起 , 直到子线程运行完毕,才开始执行子线程。


代码 有join:

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  #-*- coding: UTF-8 -*-  
   
   
  import threading 
  from time import sleep 
   
  def fun(): 

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在CODE上查看代码片派生到我的代码片

  <span style="white-space:pre">  </span>i= 5 
    while i > 0: 
      print(111111) 
      sleep(10) 

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在CODE上查看代码片派生到我的代码片

  <span style="white-space:pre">    </span>i-- 
   
  if __name__ == '__main__': 
   
   
    a = threading.Thread(target = fun) 
    a.start() 
    a.join() 
    while True: 
      print('aaaaaaa') 
      sleep(1) 

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在CODE上查看代码片派生到我的代码片

输出:

111111 输完之后, 才输出 <span style="font-family: Arial, Helvetica, sans-serif;">aaaaaaa </span> </p>
<p>在CODE上查看代码片派生到我的代码片</p>
<p>     </p>
<p>代码: 无join</p>
<p>在CODE上查看代码片派生到我的代码片</p>
<p>
<pre class="brush:py;">
  #-*- coding: UTF-8 -*-  
   
   
  import threading 
  from time import sleep 
   
  def fun(): 
    while True: 
      print(111111) 
      sleep(10) 
   
  if __name__ == '__main__': 
   
   
    a = threading.Thread(target = fun) 
    a.start() 
    while True: 
      print('aaaaaaa') 
      sleep(1) 

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在CODE上查看代码片派生到我的代码片

   

111111 和 <span style="font-family: Arial, Helvetica, sans-serif;">aaaaaaa  间隔输出</span>  <br>

    
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