python3+ 简单爬虫笔记

 import urllib.request
 import re

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

 def getImg(html):
     reg = r'src="(.+?\.jpg)" pic_ext'
     imgre = re.compile(reg)
     html = html.decode('utf-8')
     imglist = re.findall(imgre,html)

     x = 

     for imgurl in imglist:
         urllib.request.urlretrieve(imgurl,'%s.jpg' %x)
         x +=
     return imglist

 html = getHtml("http://tieba.baidu.com/p/2460150866")
 print(getImg(html))