code: def _elem_from_descendants(children_nodes, **options):
      
      for child in children_nodes:  # child should be a dict-like object.
          for ckey, cval in anyconfig.compat.iteritems(child):
              celem = ET.Element(ckey)
              container_to_etree(cval, parent=celem, **options)
              yield celem
docs: :param children_nodes: A list of child dict objects
      :param options: Keyword options, see :func:`container_to_etree`