Die Betaversion des Python-Crawlers crawlt eine einzelne Seite von Zhihu

Da ich zuvor Python zum Schreiben eines Crawlers verwendet habe und den Betreibern beim Crawlen der Produktmarken und Kategorien von JD.com geholfen habe, habe ich dieses Mal auch Python verwendet, um eine einfache Einzelseitenversion zu erfassen, die ich später hinzufügen werde.

#-*- coding: UTF-8 -*- 
import requests
import sys
from bs4 import BeautifulSoup

#－－－－－－知乎答案收集－－－－－－－－－－

#获取网页body里的内容
def get_content(url , data = None):
    header={
        'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
        'Accept-Encoding': 'gzip, deflate, sdch',
        'Accept-Language': 'zh-CN,zh;q=0.8',
        'Connection': 'keep-alive',
        'User-Agent': 'Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.235'
    }

    req = requests.get(url, headers=header)
    req.encoding = 'utf-8'
    bs = BeautifulSoup(req.text, "html.parser")  # 创建BeautifulSoup对象
    body = bs.body # 获取body部分
    return body

#获取问题标题
def get_title(html_text):
     data = html_text.find('span', {'class': 'zm-editable-content'})
     return data.string.encode('utf-8')

#获取问题内容
def get_question_content(html_text):
     data = html_text.find('div', {'class': 'zm-editable-content'})
     if data.string is None:
         out = '';
         for datastring in data.strings:
             out = out + datastring.encode('utf-8')
         print '内容：\n' + out
     else:
         print '内容：\n' + data.string.encode('utf-8')

#获取点赞数
def get_answer_agree(body):
    agree = body.find('span',{'class': 'count'})
    print '点赞数：' + agree.string.encode('utf-8') + '\n'

#获取答案
def get_response(html_text):
     response = html_text.find_all('div', {'class': 'zh-summary summary clearfix'})
     for index in range(len(response)):
         #获取标签
         answerhref = response[index].find('a', {'class': 'toggle-expand'})
         if not(answerhref['href'].startswith('javascript')):
             url = 'http://www.zhihu.com/' + answerhref['href']
             print url
             body = get_content(url)
             get_answer_agree(body)
             answer = body.find('div', {'class': 'zm-editable-content clearfix'})
             if answer.string is None:
                 out = '';
                 for datastring in answer.strings:
                     out = out + '\n' + datastring.encode('utf-8')
                 print out
             else:
                 print answer.string.encode('utf-8')


html_text = get_content('https://www.zhihu.com/question/43879769')
title = get_title(html_text)
print "标题：\n" + title + '\n'
questiondata = get_question_content(html_text)
print '\n'
data = get_response(html_text)

Ausgabeergebnis: