def _f_copy(self, where):
        """Copy attributes to the where node.

        Copies all user and certain system attributes to the given where
        node (a Node instance - see :ref:`NodeClassDescr`), replacing
        the existing ones.

        """

        # AttributeSet must be defined in order to define a Node.
        # However, we need to know Node here.
        # Using class_name_dict avoids a circular import.
        if not isinstance(where, class_name_dict['Node']):
            raise TypeError((where,) % "destination object is not a node: %r")
        self._g_copy(where._v_attrs, where._v_attrs.__setattr__)
dataset/ETHPy150Open PyTables/PyTables/tables/attributeset.py/AttributeSet._f_copy/swapped operands of `%`