如何使用Beautiful Soup 的CSS选择器获取节点信息
from bs4 import BeautifulSoup
html = '''
<html>
<head>
<meta charset="UTF-8">
<title>Beautiful Soup</title>
</head>
<body>
<div>
<ul>
<li class="item" value1="1234", value2="hello world"><a href="https://www.xxx.com">ruochen</a></li>
<li class="item2"><a href="https://www.xxx.com">若尘</a></li>
</ul>
<button id="button1">确定</button>
<ul>
<li class="item"><a href="https://www.taobao.com">淘宝</a></li>
<li id="myli" class="item4"><a href="https://www.microsoft">微软</a></li>
<li class="item5"><a href="https://www.google.com">谷歌</a></li>
</ul>
</div>
<body>
'''
soup = BeautifulSoup(html, 'lxml')
tags = soup.select('.item')
print(tags)
print(type(tags))
for tag in tags:
print(tag)[<li class="item" value1="1234" value2="hello world"><a href="https://www.xxx.com">ruochen</a></li>, <li class="item"><a href="https://www.taobao.com">淘宝</a></li>]<class 'list'><li class="item" value1="1234" value2="hello world"><a href="https://www.xxx.com">ruochen</a></li><li class="item"><a href="https://www.taobao.com">淘宝</a></li>tags= soup.select('#myli')
print(tags)[<li class="item4" id="myli"><a href="https://www.microsoft">微软</a></li>]tags = soup.select('a')
for tag in tags:
print(tag)
print(tag['href'])<a href="https://www.xxx.com">ruochen</a>https://www.xxx.com<a href="https://www.xxx.com">若尘</a>https://www.xxx.com<a href="https://www.taobao.com">淘宝</a>https://www.taobao.com<a href="https://www.microsoft">微软</a>https://www.microsoft<a href="https://www.google.com">谷歌</a>https://www.google.com正文完