用python处理html代码的转义与还原

转义 escape:

import cgi
s = cgi.escape("""& < >""") # s = '&amp; &lt; &gt;'

反转义 unescape:

#使用标准库
from htmllib import HTMLParser 
h = HTMLparser.HTMLParser() 
s = h.unescape('& < >')    # s = u'& < >' 

#使用BeautifulSoup 
from bs4 import BeautifulSoup 
soup = BeautifulSoup(html, convertEntities=BeautifulSoup.HTML_ENTITIES)

引用于:
http://fredericiana.com/2010/10/08/decoding-html-entities-to-text-in-python/
https://wiki.python.org/moin/EscapingHtml

http://blog.163.com/gaocheng2008@yeah/blog/static/93043209201431632148859/