如何不修改内容的前提下，让python的markdown模块不解析数字列表呢

import markdown
from markdown import blockprocessors

class NoNumberedListExtension(markdown.extensions.Extension):
    def extendMarkdown(self, md):
        md.parser.blockprocessors.deregister('olist')
        md.parser.blockprocessors.register(NoNumberedListProcessor(md.parser), 'olist', 75)

class NoNumberedListProcessor(markdown.blockprocessors.OListProcessor):
    def __init__(self, parser):
        super().__init__(parser)
        self.RE =re.compile(r'^(\s*)([-+*])\s+')

    def run(self, parent, blocks):
        sibling = self.lastChild(parent)
        if sibling is not None and sibling.tag == 'ol':
            return None
        return super().run(parent, blocks)

md = markdown.Markdown(extensions=[NoNumberedListExtension()])
markdown_text = "1. First item\n2. Second item\n* Unordered item"
html = md.convert(markdown_text)
print(html)