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-8import 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
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