多线程的小demo

转自虫师

import threading
from time import ctime,sleep
import time
from selenium import  webdriver
def music():
    for i in range(100):
        print i
        time.sleep(1)
t = threading.Thread(target=music)
if __name__ == '__main__':

    t.setDaemon(True)
    t.start()
    time.sleep(3)
    print "all over %s" %ctime()

线程退出：thred.exit()