def get_depth_str(element, type='other'):
        '''get_depth_str

        High-level api: Produce a string that represents tree hierarchy.

        Parameters
        ----------

        element : `Element`
            A node in model tree.

        type : `str`
            Type of model content required. Its value can be 'other', 'rpc', or
            'notification'.

        Returns
        -------

        str
            A string that represents tree hierarchy.
        '''

        def following_siblings(element, type):
            if type == 'rpc' or type == 'notification':
                return [s for s in list(element.itersiblings()) \
                        if s.get('type') == type]
            else:
                return [s for s in list(element.itersiblings()) \
                        if s.get('type') != 'rpc' and \
                           s.get('type') != 'notification']

        ancestors = list(reversed(list(element.iterancestors())))
        ret = ' '
        for i, ancestor in enumerate(ancestors):
            if i == 1:
                if following_siblings(ancestor, type):
                    ret += '|  '
                else:
                    ret += '   '
            else:
                if ancestor.getnext() is None:
                    ret += '   '
                else:
                    ret += '|  '
        ret += '+--'
        return ret
def get_depth_str ( element , type = 'other' ) : def following_siblings ( element , type ) : if type == 'rpc' or type == 'notification' : return [ s for s in list ( element . itersiblings ( ) ) if s . get ( 'type' ) == type ] else : return [ s for s in list ( element . itersiblings ( ) ) if s . get ( 'type' ) != 'rpc' and s . get ( 'type' ) != 'notification' ] ancestors = list ( reversed ( list ( element . iterancestors ( ) ) ) ) ret = ' ' for i , ancestor in enumerate ( ancestors ) : if i == 1 : if following_siblings ( ancestor , type ) : ret += '|  ' else : ret += '   ' else : if ancestor . getnext ( ) is None : ret += '   ' else : ret += '|  ' ret += '+--' return ret
get_depth_str

        High-level api: Produce a string that represents tree hierarchy.

        Parameters
        ----------

        element : `Element`
            A node in model tree.

        type : `str`
            Type of model content required. Its value can be 'other', 'rpc', or
            'notification'.

        Returns
        -------

        str
            A string that represents tree hierarchy.