def _update_column_attribute_changed(self, column, idx, attr, old_value,
                                         new_value):

        method_name = '_update_column_{0}'.format(attr)
        if hasattr(self, method_name):
            # Right now this is so we can be lazy and not implement updaters
            # for every attribute yet--some we may not need at all, TBD
            getattr(self, method_name)(column, idx, old_value, new_value)
Update how the data is formatted depending on changes to column
dataset/ETHPy150Open spacetelescope/PyFITS/pyfits/fitsrec.py/FITS_rec._update_column_attribute_changed