RegEx for [at] and urls.

namere.py

import re

at_user_filter = re.compile(r'(?:^|\W)@(\w+)')
email_filter = re.compile('(\w{1,63})@([A-Za-z0-9\.\-] ).(com|net|org|me|in|fm|co|biz|info|mobi|cc)')
#you can add suffixes by asking Google for domain suffix information.
url_filter = re.compile(u'((http(s|)|ftp)://|)(\w{0,}\.|)(\w{1,63}).(\w{2,4})((/((.*)|)|))')

@whtsky url实在晕……先不管了.

@whtsky ?:明白了……