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: