用python正则表达式提取网页的url

 1 import re
 2 import urllib
 3 url="http://www.itokit.com"
 4 s=urllib.urlopen(url).read()
 5 ss=s.replace(" ","")
 6 urls=re.findall(r"<a.*?href=.*?<\/a>",ss,re.I)
 7 for i in urls:
 8 print i
 9 else:
10 print 'this is over'

挺好用的，记录下