python正则表达式提取网页URL
import re
import urllib
url="http://www.open-open.com"
s=urllib.urlopen(url).read()
ss=s.replace(" ","")
urls=re.findall(r"<a.*?href=.*?<//a>",ss,re.I)
for i in urls:
print i
else:
print 'this is over'
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