python之多线程

1、分为主线程和子线程

2、设置守护线程setDaemon()

3、在子线程运行结束之前，主线程无法执行，子线程结束，主线程才执行join()

备注：通过多程线的方式运行脚本，总的时间没变化

代码：

#coding=utf-8
import threading
from time import ctime,sleep


def music(func):
    for i in range(2):
        print "I was listening to %s. %s" %(func,ctime())
        sleep(1)

def move(func):
    for i in range(2):
        print "I was at the %s! %s" %(func,ctime())
        sleep(5)

threads = []
t1 = threading.Thread(target=music,args=(u'吃饭',))
threads.append(t1)
t2 = threading.Thread(target=move,args=(u'喝汤',))
threads.append(t2)

if __name__ == '__main__':
    for t in threads:
        t.setDaemon(True)
        t.start()
        t.join()
    print "all over %s" %ctime()

修正版

当t2线程结束之后，程序结束，但是t1进程还没有执行完毕，这明显与我们的初衷不符。所以建议改成

if __name__ == '__main__':

    for t in threads:

        t.start()

    for t in threads:

        t.join()

 print "all over %s" %ctime()

转至：https://www.cnblogs.com/fnng/p/3670789.htmlhttps://www.cnblogs.com/fnng/p/3670789.html