如何使用python或javascript获取网页的元描述标签

import requests
from bs4 import BeautifulSoup

def get_meta_description(url):
    # 发送HTTP请求获取网页内容
    response = requests.get(url)
    html = response.text
    
    # 使用BeautifulSoup解析HTML
    soup = BeautifulSoup(html, 'html.parser')
    
    # 查找meta标签中的description属性
    meta_tag = soup.find('meta', attrs={'name': 'description'})
    
    # 提取description属性的内容
    if meta_tag:
        description = meta_tag['content']
        return description
    else:
        return None

# 调用函数获取网页的元描述标签
url = 'https://www.example.com'  # 替换为你要获取的网页URL
description = get_meta_description(url)
print(description)

const axios = require('axios');
const cheerio = require('cheerio');

async function getMetaDescription(url) {
  // 发送HTTP请求获取网页内容
  const response = await axios.get(url);
  const html = response.data;

  // 使用cheerio解析HTML
  const $ = cheerio.load(html);

  // 查找meta标签中的description属性
  const metaTag = $('meta[name="description"]');

  // 提取description属性的内容
  if (metaTag.length > 0) {
    const description = metaTag.attr('content');
    return description;
  } else {
    return null;
  }
}

// 调用函数获取网页的元描述标签
const url = 'https://www.example.com';  // 替换为你要获取的网页URL
getMetaDescription(url)
  .then(description => {
    console.log(description);
  })
  .catch(error => {
    console.error(error);
  });