Python抓取百度查询结果的方法

#win python 2.7.x
import re,sys,urllib,codecs
xh = urllib.urlopen("http://www.baidu.com/s?q1=123&rn=100").read().decode('utf-8') 
rc = re.compile(r'
(?P.*?)
',re.I)
match = rc.finditer(xh)
rcr = re.compile(r'<[^>]+>',re.I)
f = codecs.open("xiaohei.txt", "w", "utf-8")
for i in rc.finditer(xh):
 ss = i.group(0)
 s1 = rcr.sub('',ss)
 print (s1)
 f.write(s1)
f.close()