帮我写一个爬虫代码

import requests from bs4 import BeautifulSoup # 爬取url地址 url = 'http://www.example.com' # 发送请求，获取响应内容 response = requests.get(url) # 把响应内容转换为BeautifulSoup对象，便于提取元素 soup = BeautifulSoup(response.text, 'lxml') # 提取所有a标签中的链接地址，并存入列表中 links = [link.get('href') for link in soup.find_all('a')]