基于python的百度资讯爬虫的设计与实现

import requests
from bs4 import BeautifulSoup
import re
import pandas as pd
 
def get_news_data(url):
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3',
        'Accept-Encoding': 'gzip, deflate',
        'Connection': 'keep-alive'
    }
    res = requests.get(url, headers=headers)
    res.raise_for_status()
    res.encoding = 'utf-8'
    return res.text
 
def parse_news_data(html):
    soup = BeautifulSoup(html, 'html.parser')
    news_data = soup.select('#newsContent')
    news_content = news_data[0].text if news_data else 'No content available.'
    return news_content
 
def main():
    url = 'http://news.baidu.com/item?tab=0&id=0&type=0&tm=0'
    html = get_news_data(url)
    content = parse_news_data(html)
    print(content)
 
if __name__ == '__main__':
    main()

这段代码首先定义了一个获取网页内容的函数get_news_data，然后定义了一个解析新闻内容的函数parse_news_data，最后在main函数中通过调用这两个函数来实现从百度资讯获取新闻内容的例子。在实际应用中，你需要根据实际情况调整请求头、网页URL和解析方式。