<div py:replace="form(value=record, action=tg.url('/curso/alumno/update/%d/%d' % (record.id, cursoid)),
submit_text=_(u'Guardar'))">Formulario</div>
<div py:replace="form(value=record, action=tg.url('/curso/alumno/update/%d/%d' % (record.id, cursoid)),
submit_text=_(u'Guardar'))">Formulario</div>