# -*- coding: utf-8 -*-
"""
Created on Mon Dec 25 10:34:27 2017
@author: gzs10227
"""
import urllib,urllib2,re,json
import requests
urllib.getproxies_registry =lambda:{}
import sys
stderr = sys.stderr
stdout = sys.stdout
reload(sys)
sys.setdefaultencoding('utf8')
sys.stderr = stderr
sys.stdout = stdout
from lxml import etree
import re
import pandas as pd
from pandas import DataFrame
import os
import random
import datetime,time
url = 'https://www.zhihu.com/topic/20105184/top-answers?page=1'
headers = {
'accept':'application/json, text/plain, */*',
'Accept-Language':'zh-CN,zh;q=0.9',
'authorization':'Bearer 2|1:0|10:1514185979|4:z_c0|92:Mi4xZzZSRkFnQUFBQUFBZ0VJeThBYTdEQ1lBQUFCZ0FsVk4tdkl0V3dCSHVJTm93T3d6a3lBSmotSjJQR0xzaV82QUJR|fd43b64c754f3e2d34658961f5db3f233ea367c86eb90c299685746fb8e1cbf8',
'Cache-Control':'no-cache',
'Connection':'keep-alive',
'Cookie':'',
'Host':'www.zhihu.com',
'Pragma':'no-