Beautiful Soup可以通过.find_all()方法和CSS选择器来过滤所需的标签和属性值。

以下是一个示例：

from bs4 import BeautifulSoup

html_doc = """


    


    

        
Welcome to Beautiful Soup
        
Beautiful Soup is a Python library for pulling data out of HTML and XML files.
    
    

        
Installation
        
You can install Beautiful Soup using pip.
    


"""

soup = BeautifulSoup(html_doc, 'html.parser')

# 使用标签名过滤
div_tag = soup.find_all('div') # 返回包含所有
标签的列表
print(div_tag)

# 使用CSS选择器过滤
p_desc = soup.select('.desc') # 返回所有class为desc的
标签
print(p_desc)

输出结果：

[

Welcome to Beautiful Soup
Beautiful Soup is a Python library for pulling data out of HTML and XML files.
, 

Installation
You can install Beautiful Soup using pip.
]
[
Beautiful Soup is a Python library for pulling data out of HTML and XML files.
, 
You can install Beautiful Soup using pip.
]

可以看到，Beautiful Soup通过.find_all()方法和CSS选择器成功过滤了所需要的标签和属性值。