HTML to Lys

html_to_lys.py

from bs4 import BeautifulSoup
from lys import render, L

html_doc = """
<ul class="breadcrumb">
  <li class="active">Home</li>
</ul>

<ul class="breadcrumb">
  <li><a href="#">Home</a></li>
  <li class="active">Library</li>
</ul>

<ul class="breadcrumb">
  <li><a href="#">Home</a></li>
  <li><a href="#">Library</a></li>
  <li class="active">Data</li>
</ul>
"""

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

def render_to_lys(node):
    def render_children(node):
        ', '.join()

    if hasattr(node, 'attrs'):
        name = str(node.name)
        out = 'L.' + name
        if name == '[document]':
            out = ''
        if len(list(node.children)) > 0:
            if name != '[document]':
                out += ' / '
            children = list(x for x in (render_to_lys(node) for node in node.children) if x)
            children = list(x for x in (render_to_lys(node) for node in node.children) if x)
            out += '( ' + ', '.join(children) + ' )'
        return out
    else:
        s = node.strip()
        if len(s) > 0:
            return repr(s)

result = render_to_lys(soup)
print(result)
html = eval('render(' + result + ')')
soup_result = BeautifulSoup(html, 'html.parser')
print(soup_result.prettify())