ulize.py: Convert plaintext lists to HTML unordered lists

ulize.py

import re

def ulize(text):
    r"""
    Convert lists embedded in plain text to HTML unordered lists. Yes, kinda
    like Markdown or Textile but without the other junk.  Expects each list
    item to be prefixed by zero or more spaces, a dash, and a single space.

    https://gist.github.com/bryanchow/2b0fa0cc99c2582e5bb65b9f1088473f

    >>> ulize(
    ...    "Here is a list of items:\n"
    ...    "- Item one\n"
    ...    "- Item two\n"
    ... )
    'Here is a list of items:<ul><li>Item one</li><li>Item two</li></ul>'

    >>> ulize(
    ...    "Another\n"
    ...    "list:\n"
    ...    "  - One\n"
    ...    "  - Two\n"
    ...    "  Not-an-item\n"
    ... )
    'Another\nlist:<ul><li>One</li><li>Two</li></ul>  Not-an-item\n'
    """

    return re.sub(
        r"\s*- (.*)\n*",
        r"<li>\1</li>",
        re.sub(r"((\s*- [^\n]*(\n|$))+)", r"<ul>\n\1\n</ul>", text)
    )

if __name__ == "__main__":
    import doctest
    doctest.testmod()