How to use the genshi.builder.tag.td function in Genshi

def _render_mergeinfo(self, name, mode, context, props):
        rows = []
        for row in props[name].splitlines():
            try:
                (path, revs) = row.rsplit(':', 1)
                rows.append([tag.td(path),
                             tag.td(revs.replace(',', u',\u200b'))])
            except ValueError:
                rows.append(tag.td(row, colspan=2))
        return tag.table(tag.tbody([tag.tr(row) for row in rows]),
                         class_='props')

def _render_mergeinfo(self, name, mode, context, props):
        rows = []
        for row in props[name].splitlines():
            try:
                (path, revs) = row.rsplit(':', 1)
                rows.append([tag.td(path),
                             tag.td(revs.replace(',', u',\u200b'))])
            except ValueError:
                rows.append(tag.td(row, colspan=2))
        return tag.table(tag.tbody([tag.tr(row) for row in rows]),
                         class_='props')

def make_list(items):
                parts = [item.rsplit('.', 1) for item in items]
                return tag.table(tag.tbody(
                    tag.tr(tag.td(c, class_='trac-name'),
                           tag.td('(%s.*)' % m, class_='trac-name'))
                    for m, c in parts), class_='trac-pluglist')

def test_genshi_builder():
    """Genshi template + tag builder"""
    stream = tag.TABLE([
        tag.tr([tag.td(c) for c in row.values()])
        for row in table
    ]).generate()
    stream = genshi_tmpl2.generate(table=stream)
    stream.render('html', strip_whitespace=False)

content = content.strip() if content else ''
        name_filter = content.strip('*')
        items = {}
        for subscriber in NotificationSystem(self.env).subscribers:
            name = subscriber.__class__.__name__
            if not name_filter or name.startswith(name_filter):
                items[name] = subscriber.description()

        return tag.div(class_='trac-subscriberlist')(
            tag.table(class_='wiki')(
                tag.thead(tag.tr(
                    tag.th(_("Subscriber")),
                    tag.th(_("Description")))),
                tag.tbody(
                    tag.tr(tag.td(tag.code(name)),
                           tag.td(items[name]),
                           class_='odd' if idx % 2 else 'even')
                    for idx, name in enumerate(sorted(items.keys())))))

def _render(self, text=None):
        if text is None:
            text = self._get_text()

        data = csv.reader(StringIO(text))

        rows = (tag.tr(tag.td(cell) for cell in row) for row in data)

        stream = tag.table(rows)

        return stream.generate()

eligible -= set(Ranges(blocked))
                        if eligible:
                            nrevs = repos._get_node_revs(spath, max(eligible),
                                                         min(eligible))
                            eligible &= set(nrevs)
                        eligible = to_ranges(eligible)
                        row.append(_get_revs_link(_('eligible'), context,
                                                  spath, eligible))
                    rows.append((False, spath, [tag.td(each) for each in row]))
                    continue
            except NoSuchNode:
                deleted = True
            revs = revs.replace(',', u',\u200b')
            rows.append((deleted, spath,
                         [tag.td('/' + spath),
                          tag.td(revs, colspan=revs_cols)]))
        if not rows:
            return None
        rows.sort()
        has_deleted = rows[-1][0] if rows else None
        return tag(has_deleted and tag.a(_('(toggle deleted branches)'),
                                         class_='trac-toggledeleted',
                                         href='#'),
                   tag.table(tag.tbody(
                       [tag.tr(row, class_='trac-deleted' if deleted else None)
                        for deleted, spath, row in rows]), class_='props'))

def default_cell(option):
            default = option.default
            if default is True:
                default = 'true'
            elif default is False:
                default = 'false'
            elif default == 0:
                default = '0.0' if isinstance(default, float) else '0'
            elif default:
                default = ', '.join(to_unicode(val) for val in default) \
                          if isinstance(default, (list, tuple)) \
                          else to_unicode(default)
            else:
                return tag.td(_("(no default)"), class_='nodefault')
            return tag.td(tag.code(default), class_='default')