python中%s的用法(字符串变量赋值办法),长字符串换行办法
参考:
http://wap.mobiletrain.org/about/BBS/142752.html
https://blog.csdn.net/PolarisRisingWar/article/details/131134627
https://baijiahao.baidu.com/s?id=1756094563884490493&wfr=spider&for=pc
字符串变量赋值
"Hello, %s. Today is %s." % ("Alice", "Monday")