def get_all_longest_col_lengths(self):
        response = {}
        for col in self.col_list:
            response[col] = self._longest_val_in_column(col)
        return response
Clean all object caches on the given object.
dataset/ETHPy150Open projectatomic/osbs-client/osbs/cli/render.py/TablePrinter.get_all_longest_col_lengths--crossover with--dataset/ETHPy150Open evennia/evennia/evennia/utils/utils.py/clean_object_caches