python爬虫小程序代码

#!/usr/bin/env python
#
import urllib2
import re

response = urllib2.urlopen('http://www.jb200.com/')
 
text = 'JGood is<title>sdfa</title>  a handsome <title> boy, </title>he is cool, clever, and so on...'
text2 = text.replace('y','')
#m = re.search(r'<title>(.*)</title>',response.read())
#m = re.match(r'.*<title>(.*)</title>.*',response.read())
#m = re.match(r'.*<title>(.*)</title>.*',text2)
m = re.search(r'<title>(.*)</title>',text2)

print m.group(1).decode('utf-8','ignore')
 
#m = re.finditer(r'<title>(.*)</title>',text)
#m = re.finditer(r'<title>([^<title>]*)</title>',text)  ///匹配不能包含<title>中任意字符的一个。
 
m = re.finditer(r'<title>((.(?!<title>))*.)</title>',text)  ///匹配不是<title>的字符串。