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

        Each of these sequences contains information describing one result column:

        - name
        - type_code
        - display_size (None in current implementation)
        - internal_size (None in current implementation)
        - precision (None in current implementation)
        - scale (None in current implementation)
        - null_ok (always True in current implementation)

        The ``type_code`` can be interpreted by comparing it to the Type Objects specified in the
        section below.
        """
        # Sleep until we're done or we got the columns
        if self._columns is None:
            return []
        return [
            # name, type_code, display_size, internal_size, precision, scale, null_ok
            (col[0], col[1], None, None, None, None, True) for col in self._columns
        ]