基于Python3.4实现简单抓取爬虫功能详细介绍

这篇文章主要介绍了Python3.4编程实现简单抓取爬虫功能,涉及Python3.4网页抓取及正则解析相关操作技巧,需要的朋友可以参考下

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测试数据/")
def getimg(html):
  html = html.decode('utf-8')
  reg='"screen_name":"(.*?)"'
  imgre = re测试数据pile(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测试数据/"+a)))
  time.sleep(1) 

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