新手学python 多线程 传递参数 问题

bh3531

#!/usr/bin/python
import threading
import thread
import sys
import time
def func(x):         
    for i in range(x,10 +1):
        print i
        time.sleep(1)
t1 = threading.Timer(0,func(5))
t2 = threading.Timer(0,func(4))
t1.start()
t2.start()

这个多线程原本没有加参数是可以的，现在传递一个参数进去 变成了 单线程，请哥哥们 帮忙修改一下。

timespace

回复 1# bh3531
属于传参错误，看文档

1. class threading.Timer(interval, function, args=[], kwargs={})
   
2. Create a timer that will run function with arguments args and keyword arguments kwargs, after interval seconds have passed.
   

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一个例子，传参用list

1. #!/usr/bin/env python
   
2. # -*- coding: utf-8 -*-
   
3. import sys
   
4. import time
   
5. import threading
   
6. 
   
7. def counter(identity, limit):
   
8.     for n in range(limit):
   
9.         # stderr无缓存，避免线程间交叉输出
   
10.         sys.stderr.write('id = {}, cnt = {}\n'.format(identity, n))
    
11.         # print 'id = {}, cnt = {}'.format(identity, n)
    
12.         time.sleep(0.5)
    
13. 
    
14. def main():
    
15.     for i in range(3):
    
16.         t = threading.Timer(3, counter, [i, i + 3])
    
17.         t.start()
    
18. 
    
19. if __name__ == '__main__':
    
20.     main()

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Python2.7执行，可能输出

1. id = 0, cnt = 0
   
2. id = 2, cnt = 0
   
3. id = 1, cnt = 0
   
4. id = 2, cnt = 1
   
5. id = 0, cnt = 1
   
6. id = 1, cnt = 1
   
7. id = 2, cnt = 2
   
8. id = 0, cnt = 2
   
9. id = 1, cnt = 2
   
10. id = 1, cnt = 3
    
11. id = 2, cnt = 3
    
12. id = 2, cnt = 4

复制代码

bh3531

回复 2# timespace


    哥哥 谢谢你了，你给的例子太好了，一看就明白。
    俺以后学习细心一些多看手册