基于Python3.4实现简单抓取爬虫功能详细介绍

import urllib.request
import urllib.parse
import re
import urllib.request,urllib.parse,http.cookiejar
import time
def getHtml(url):
 cj=http.cookiejar.CookieJar()
 opener=urllib.request.build_opener(urllib.request.HTTPCookieProcessor(cj))
 opener.addheaders=[('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36'),('Cookie','4564564564564564565646540')]
 urllib.request.install_opener(opener)
 page = urllib.request.urlopen(url)
 html = page.read()
 return html
#print ( html)
#html = getHtml("http://weibo.com/")
def getimg(html):
 html = html.decode('utf-8')
 reg='"screen_name":"(.*?)"'
 imgre = re.compile(reg)
 src=re.findall(imgre,html)
 return src
#print ("",getimg(html))
uid=['2808675432','3888405676','2628551531','2808587400']
for a in list(uid):
 print (getimg(getHtml("http://weibo.com/"+a)))
 time.sleep(1)