How to use the flattentool.flatten function in flattentool

if not args.verbose:
        sys.excepthook = non_verbose_error_handler
        warnings.formatwarning = non_verbose_warning_formatter

    if args.subparser_name == "create-template":
        # Pass the arguments to the create_template function
        # If the schema file does not exist we catch it in this exception
        try:
            # Note: Ensures that empty arguments are not passed to the create_template function
            create_template(**kwargs_from_parsed_args(args))
        except (OSError, IOError) as e:
            print(str(e))
            return
    elif args.subparser_name == "flatten":
        flatten(**kwargs_from_parsed_args(args))
    elif args.subparser_name == "unflatten":
        unflatten(**kwargs_from_parsed_args(args))