Method is_numerical

demo/guide-python/model_parser.py:89–90

(self, node_id: int)

        return self.nodes[node_id].split_type == SplitType.categorical

    def is_numerical(self, node_id: int) -> bool:
        return not self.is_categorical(node_id)

    def parent(self, node_id: int) -> int:
        """Parent ID of a node."""