def categorical__int(self, column_name, output_column_prefix):
        """
        Interprets an integer column as a categorical variable.
        """

        return [_ColumnFunctionTransformation(
            features = [column_name],
            output_column_prefix = output_column_prefix,
            transform_function = lambda col: col.astype(str),
            transform_function_name = "astype(str)")]
Interprets an integer column as a categorical variable.