Python网络爬虫实训：如何下载韩寒博客文章

#coding:utf-8

import urllib
import time

url = ['']*350
page = 1
link = 1
while page <= 7:
con = urllib.urlopen('http://blog.sina.com.cn/s/articlelist_1191258123_0_'+str(page)+'.html').read()
i = 0
title = con.find(r'<a title=')
href = con.find(r'href=',title)
html = con.find(r'.html',href)

while title != -1 and href != -1 and html != -1 and i < 50:
url[i] = con[href + 6 : html + 5]
print link, url[i]
content = urllib.urlopen(url[i]).read()
open(r'hanhan/'+url[i][-26:],'w+').write(content)
print 'downloading', url[i]
time.sleep(1)
title = con.find(r'<a title=', html)
href = con.find(r'href=', title)
html = con.find(r'.html', href)
i = i + 1
link = link + 1
else:
print page,'find end!'
page = page + 1
else:
print 'all find end'