python图片小爬虫

 import re
 import urllib
 import os

 def rename(name):
     name = name + '.jpg'
     return name  

 def getHtml(url):
     page = urllib.urlopen(url)
     html = page.read()
     return html

 def getImg(html):
     reg = r'src="(.+?\.jpg)" pic_ext'
     imgre = re.compile(reg)
     imglist = re.findall(imgre,html)

     os.chdir("E:\\pic")
     os.getcwd()
     x=1
     for imgurl in imglist:
         img=urllib.urlopen(imgurl)

         name=str(x)
         name = rename(name)
         print(name)
         x=x+1

         f=open(name,'wb')
         f.write(img.read())
         f.close()

 html = getHtml("http://tieba.baidu.com/p/3553148164")
 getImg(html)
 print 'pic save!'

爬取的网页是  http://tieba.baidu.com/p/3553148164

图片保存在E盘pic文件夹下

爬取结果如下: