python定时器代码，如下：
复制代码 代码示例:
#!/usr/bin/env python
#coding=utf-8
#edit: www.jb200.com
#
import threading
def sayhello():
print "hello world"
global t #Notice: use global variable!
t = threading.Timer(5.0, sayhello)
t.start()
t = threading.Timer(5.0, sayhello)
t.start()
