#coding:utf-8

import urllib2

import cookielib

url="https://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 response3.read()