#coding=utf8
import re
import urllib.request

def getHtml(url):
    page = urllib.request.urlopen(url)
    html = page.read().decode('latin-1').encode('utf-8').decode('utf-8')
    #html = page.read()
    #html = html.decode('gbk')
    page.close()
    return html


def getImg(html):
    reg = r'src="(.*?\.jpg)" width'
    imgre = re.compile(reg)
    imglist = re.findall(imgre, html)
    n = 0
    for imgurl in imglist:
        if 'http' in imgurl:
            print(imgurl)
            urllib.request.urlretrieve(imgurl, '%s.jpg' % n)
            n += 1

html = getHtml('http://www.123.com/index.html')
getImg(html)

Python2.X

#coding=utf8
import re
import urllib

def getHtml(url):
        page = urllib.urlopen(url) #获取的是一个页面对象
        html = page.read()          #读取出来的是html代码
        return html


def getImg(html):
        reg = r'src="(.*?\.jpg)" width'
        imgre = re.compile(reg)            #编译是为了让正则执行得更快
        imglist = re.findall(imgre,html)
        n = 0
        for imgurl in imglist:
                if 'http' in imgurl:
                        print(imgurl)
                        urllib.urlretrieve(imgurl,'%s.jpg' % n)
                        n += 1

        
html = getHtml('http://www.efeihu.com/sale/index_new.html')
getImg(html)