目录用到的函数函数申明函数调用php遍历一个文件夹内的所有文件和文件夹，并删除所有文件夹和子文件夹下的所有文件的代码，通过递归方式实现达到清空一个目录的效果，代码简单实用。
I have two versions of a piece of text and I want to produce an HTML view of its revision similar to what Google Docs or Stack Overflow displays.I need to do this in Python.I don\'t know what this tec
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