this模块的代码(this模块位于Python安装目录/lib下)。定义了2个变量；字符串s和字典d（被定义两次）；s很明显是一段密文，d则是密码字典，key和value对应的是密文和原文；chr((i+13)%26 +c) 则是加密算法，其原理是通过向字典d写入KEY为字符A~Z，VALUE为加密后的字符。然后通过字典遍历的方法，匹配出正确的字符。

this 2020-10-18 15:18:56

The Zen of Python, by Tim Peters，Beautiful is better than ugly.，Explicit is better than implicit.，Simple is better than complex.，Complex is better than complicated.，Flat is better than nested...

this 2020-10-18 15:18:13