如何将diffChars结果解析为超文本标记语言

from difflib import ndiff
import html

def diffChars_to_html(old_text, new_text):
    diff = ndiff(old_text, new_text)
    html_result = ""

    for char in diff:
        if char.startswith('-'):
            html_result += "<del>" + html.escape(char[2:]) + "</del>"
        elif char.startswith('+'):
            html_result += "<ins>" + html.escape(char[2:]) + "</ins>"
        else:
            html_result += html.escape(char[2:])

    return html_result

# 示例用法
old_text = "Hello, world!"
new_text = "Hello, beautiful world!"
html_output = diffChars_to_html(old_text, new_text)
print(html_output)