Provides a 7-item tuple compatible with the Python PEP249 DB Spec.

def description(self):
        """Provides a 7-item tuple compatible with the Python PEP249 DB Spec."""
        return (
            self.name,
            self.type_code,
            None,  # TODO: display_length; should this be self.length?
            self.get_column_length(),  # 'internal_size'
            self.get_column_length(),  # 'precision'  # TODO: why!?!?
            self.scale,
            self.flags % 2 == 0)