Python爬虫收集今日热榜数据：聚合全网热点排行榜

主要使用request库和beautifulSoup库爬取今日热榜的数据。

具体代码实现：

 1 import requests
 2 from bs4 import BeautifulSoup
 3 import time
 4 import pandas
 5 import re
 6 
 7 def get_html(url):
 8     headers = {'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.132 Safari/537.36'}
 9     resp = requests.get(url, headers=headers)
10     return resp.text
11 
12 
13 def get_data(html):
14     soup = BeautifulSoup(html, 'html.parser')
15     nodes = soup.find_all('div', class_='cc-cd')
16     return nodes
17 
18 
19 def get_node_data(df, nodes):
20     now = int(time.time())
21     for node in nodes:
22         source = node.find('div', class_='cc-cd-lb').text.strip()
23         messages = node.find('div', class_='cc-cd-cb-l nano-content').find_all('a')
24         for message in messages:
25             content = message.find('span', class_='t').text.strip()
26             if source == '微信':
27                 reg = '「.+?」(.+)'
28                 content = re.findall(reg, content)[0]
29 
30             if df.empty or df[df.content == content].empty:
31                 data = {
32                     'content': [content],
33                     'url': [message['href']],
34                     'source': [source],
35                     'start_time': [now],
36                     'end_time': [now]
37                 }
38 
39                 item = pandas.DataFrame(data)
40                 df = pandas.concat([df, item], ignore_index=True)
41 
42             else:
43                 index = df[df.content == content].index[0]
44                 df.at[index, 'end_time'] = now
45 
46     return df
47 
48 
49 url = 'https://tophub.today'
50 html = get_html(url)
51 data = get_data(html)
52 res = pandas.read_excel('今日热榜.xlsx')
53 res = get_node_data(res, data)
54 res.to_excel('今日热榜.xlsx')

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