hiccup template engine naive Python implementation

hiccup.py

class StringMeta(type):
    def __getattr__(cls, name):
        return name

    
class e(metaclass=StringMeta):
    pass


def render_attrs(attrs):
    return ' '.join(('{}="{}"'.format(key, value) for key, value in attrs.items()))


def render_element(elem, attrs, subtree=[]):
    subelements = [render_element(*_subelement) for _subelement in subtree]
    rendered_subtree = '\n'.join(subelements)
    attributes = render_attrs(attrs)
    return '<{elem} {attrs}>\n{subtree}</{elem}>\n'.format(
        elem=elem,
        attrs=attributes,
        subtree=rendered_subtree
    )
    
def hiccup(tree):
    return render_element(*tree)
    
form = [e.form, {'method': 'post', 'action': ''}, [
    [e.input, {'name': 'email', 'type': 'text', 'value': ''}],
    [e.input, {'name': 'password', 'type': 'password', 'value': ''}],
    [e.input, {'type': 'submit', 'value': 'Enter'}],
]]
    
    
page = [e.html, {}, [
        [e.head, {}],
        [e.body, {'class': 'body'}, [form]]
       ]
   ]    

print(hiccup(page))