python爬虫怎么获取cookie

## cookie的获取

# -*- coding: UTF-8 -*-

from urllib import request

from http import cookiejar

if __name__ == '__main__':

    #声明一个CookieJar对象实例来保存cookie

    cookie = cookiejar.CookieJar()

    #利用urllib.request库的HTTPCookieProcessor对象来创建cookie处理器,也就CookieHandler

    handler=request.HTTPCookieProcessor(cookie)

    #通过CookieHandler创建opener

    opener = request.build_opener(handler)

    #此处的open方法打开网页

    response = opener.open('http://www.baidu.com')

    #打印cookie信息

    for item in cookie:

        print('Name = %s' % item.name)

        print('Value = %s' % item.value)