Django: render RadioSelect as table

radiotablerenderer.py

class RadioTableRenderer(RadioSelect.renderer):
    def __iter__(self):
        choicelist = ""
        inputlist = ""
        for i, choice in enumerate(self.choices):
            id = '%s' % (self.attrs['id'] if 'id' in self.attrs else '')
            #label_for = ' for="%s"' % id if id else ''

            choicelist = choicelist +"<th>"+choice[1]+"</th>"

            inputlist = inputlist + '<td><input type="radio" id="%s" value="%s" name="%s"/></td>\n' % (id, choice[0], self.name)

        yield '<table><thead>%s</thead>\n<tr>%s</tr>\n</table>' % (
            choicelist, inputlist)