这个 ‘\’符号的作用是连接变量或者代码过长，仔细看下面代码，理解它的用法：

#!/usr/bin/python# -*- coding: utf-8 -*-import MySQLdba = "https://blog.51cto.com"\    "dinghanhua/p/"\    "9900775.html"print ab= """第一行第二行第三行"""print bc = "thins line is toooooooooooo\lone"print "c: ",cd = "https://blog.51cto.com/\dinghanhua/p/\9900775.html"print "d: ",dprint "thins line is toooooooooooo\lone"

上面的输出结果

https://blog.51cto.com/dinghanhua/p/9900775.html第一行第二行第三行c:  thins line is tooooooooooooloned:  https://blog.51cto.com/dinghanhua/p/9900775.htmlthins line is toooooooooooolone