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爬取知乎热榜标题和连接（python，requests，xp…

2019-01-22 02:00:48来源：博客园阅读 ()

用python爬取知乎的热榜，获取标题和链接。

环境和方法：ubantu16.04、python3、requests、xpath

1.用浏览器打开知乎，并登录

2.获取cookie和User—Agent

3.上代码

 1 import requests
 2 from lxml import etree
 3 
 4 def get_html(url):
 5     headers={
 6             'Cookie':'你的Cookie',
 7             #'Host':'www.zhihu.com',
 8             'User-Agent':'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.102 Safari/537.36'
 9             }
10 
11     r=requests.get(url,headers=headers)
12 
13     if r.status_code==200:
14         deal_content(r.text)
15 
16 def deal_content(r):
17     html = etree.HTML(r)
18     title_list = html.xpath('//*[@id="TopstoryContent"]/div/section/div[2]/a/h2')
19     link_list = html.xpath('//*[@id="TopstoryContent"]/div/section/div[2]/a/@href')
20     for i in range(0,len(title_list)):
21         print(title_list[i].text)
22         print(link_list[i])
23         with open("zhihu.txt",'a') as f:
24             f.write(title_list[i].text+'\n')
25             f.write('\t链接为：'+link_list[i]+'\n')
26             f.write('*'*50+'\n')
27 
28 def main():
29     url='https://www.zhihu.com/hot'
30     get_html(url)
31 
32 main()