python 获取网页图片保存在本地

import urllib
import string
import re
def getHtml(url):
    page=urllib.urlopen(url)
    html=page.read()
    return html
def getPic(html):
    imgre=re.compile(r'src=".+?\.jpg" data-big-img')
    imglist=re.findall(imgre,html)
    print imglist
    x=0
    for imgurl in imglist:
        #src="http://www.51sjk.com/Upload/Articles/1/0/320/320394_20220812153931171.jpg"'
        imgurl=imgurl.replace('src="','')
        imgurl=imgurl.replace('" data-big-img','')
        urllib.urlretrieve(imgurl,'%s.jpg' %x)
        x+=1
html=getHtml("http://www.xcxx.com/")