# coding:utf8

import urllib2

import cookielib

url="http://www.baidu.com"

print '第一种方法'

response1 = urllib2.urlopen(url)

print response1.getcode()

print len(response1.read())

print '第二种方法'

request = urllib2.Request(url)

request.add_header("user_agent","Mozilla/5.0")

response2=urllib2.urlopen(request)

print response2.getcode()

print len(response2.read())

print '第三种方法'

cj = cookielib.CookieJar()

opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))

urllib2.install_opener(opener)

response3=urllib2.urlopen(url)

print response3.getcode()

print cj

print len(response3.read())