最基础的python抓取网站图片例子

# -*- coding: utf-8 -*-

import re
import urllib
import urllib2

class Spider:
    def downLoad(self, url):
        html = self.getHtml(url)
        self.getImages(html)

    #根据url 得到 html
    def getHtml(self, url):
        page = urllib.urlopen(url)
        return page.read()

    def getImages(self, html):
        rgx = re.compile(r'src="(.+?\.jpg)" pic_ext')
        imgList = rgx.findall(html) #根据 html 匹配出 图片的url
        x = 0
        for cur in imgList:
            print ("下载第 %d 张" % x)
            urllib.urlretrieve(cur, "%s.jpg" %x)
            x = x + 1

if __name__ == "__main__":
    url = "http://tieba.baidu.com/p/2460150866"
    spider = Spider()
    spider.downLoad(url)