python解析网页的字符编码详解编程语言

import urllib.request 
import re 
content = urllib.request.urlopen("http://www.open-open.com/") 
x = str(content.info()) 
match = re.search('charset=(?P<charset>//w*)', x, re.IGNORECASE) 
if match: 
    temp = x.decode(match.group('charset'))