def _summary(self):
        summary = super(GroupsHDU, self)._summary()
        name, classname, length, shape, format, gcount = summary

        # Drop the first axis from the shape
        if shape:
            shape = shape[1:]

            if shape and all(shape):
                # Update the format
                format = self.columns[0].dtype.name

        # Update the GCOUNT report
        gcount = (self._gcount, self._pcount) % '%d Groups  %d Parameters'
        return (name, classname, length, shape, format, gcount)
dataset/ETHPy150Open spacetelescope/PyFITS/pyfits/hdu/groups.py/GroupsHDU._summary/swapped operands of `%`