python - 多线程 - join()方法

时间:2012-10-06 18:11:10

标签: python multithreading join exit

import threading, time

class test(threading.Thread):                 

    def __init__(self,name,delay):
        threading.Thread.__init__(self)
        self.name = name
        self.delay = delay

    def run(self):
        c = 0
        while True:
            time.sleep(self.delay)            
            print 'This is thread %s on line %s' %(self.name,c)
            c = c + 1 
            if c == 15:
                print 'End of thread %s' % self.name
                break

one = test('one', 1).start()
two = test('two', 3).start()

one.join()
two.join()

print 'End of main'

问题:无法使join()方法正常工作,出现以下错误:

Traceback (most recent call last)line 29, in <module> join() NameError: name 'join' is not defined

如果我删除:

one.join
two.join

代码完美无缺。

我想打印最后一行,

print 'End of main'

两个线程结束后。我似乎无法理解为什么join()不是这两个实例的属性?

1 个答案:

答案 0 :(得分:4)

one = test('one', 1).start()
two = test('two', 3).start()

您的问题是start()没有执行return selfonetwo不是主题。它们是Nonestart()实际上的返回值。

这有效:

one = test('one', 1)
one.start()
two = test('two', 3)
two.start()
相关问题