code: def attribute_path(
          self,
          node,
          attribute,
          missing=None,
          visitor=lambda node, attribute: getattr(node, attribute, None),
      ):
          
          return [visitor(c, attribute) or missing for c in node.ancestors()] + [
              visitor(node, attribute) or missing
          ]
docs: Generates a list of values of the `attribute` of all ancestors of
              the given `node` (as well as the node itself). If a value is
              ``None``, then the optional value of `missing` is used (by default
              ``None``).
  
              By default, the ``getattr(node, attribute, None) or missing``
              mechanism is used to obtain the value of the attribute for each
              node. This can be overridden by supplying a custom `visitor`
              function, which expects as arguments the node and the attribute, and
              should return an appropriate value for the required attribute.
  
              :param node: the :class:`CTENode` for which to generate the
                  attribute path.
  
              :param attribute: the name of the attribute.
  
              :param missing: optional value to use when attribute value is None.
  
              :param visitor: optional function responsible for obtaining the
                  attribute value from a node.
  
              :return: a list of values of the required `attribute` of the
                  ancestor path of the given `node`.