Method _check_group

tables/file.py:2346–2349

(self, node: Group)

            raise FileModeError("the file is not writable")

    def _check_group(self, node: Group) -> None:
        # `node` must already be a node.
        if not isinstance(node, Group):
            raise TypeError(f"node ``{node._v_pathname}`` is not a group")

    def is_undo_enabled(self) -> bool:
        """Return True uf the Undo/Redo mechanism is enabled.