请教python怎么把html文本转换成富文本richtext

hr361

请教python怎么把html文本转换成富文本richtext?
一般网页发布文章时，有个html到源代码转换，我希望能用python实现该功能，谢谢

hr361

such as the webiste:
http://www.mulu001.com/post.php?164

when I click a html/source switch button,the source code can be transformed to html,
please check the javascript code which implement this function:  http://www.mulu001.com/js/richedit/richtext.js

thanks very much.