使用BeautifulSoup在HTML语言的字符串周围添加标记

from bs4 import BeautifulSoup

# 假设有一个HTML字符串
html_string = "<p>This is a paragraph.</p>"

# 创建BeautifulSoup对象
soup = BeautifulSoup(html_string, 'html.parser')

# 添加标记
tag = soup.new_tag('div')  # 创建一个<div>标签
tag.string = "This is a div."  # 设置标签的内容
soup.p.wrap(tag)  # 将<p>标签包裹在<div>标签内

# 打印结果
print(soup)

<div><p>This is a div.</p></div>