def description(self):
        """
        This read-only attribute is a sequence of 7-item sequences.
        """
        if self._closed:
            return

        description = []
        for col in self._result["cols"]:
            description.append((col,
                                None,
                                None,
                                None,
                                None,
                                None,
                                None))
        return tuple(description)
This read-only attribute is a sequence of 7-item sequences.