Method add

examples/argparse_example.py:127–130

add subcommand of calculate command.

(self, args: argparse.Namespace)

    # subcommand functions for the calculate command
    @cmd2.as_subcommand_to("calculate", "add", add_parser, help=add_description.lower())
    def add(self, args: argparse.Namespace) -> None:
        """add subcommand of calculate command."""
        result = args.num1 + args.num2
        self.poutput(f"{args.num1} + {args.num2} = {result}")

    @cmd2.as_subcommand_to("calculate", "subtract", subtract_parser, help=subtract_description.lower())
    def subtract(self, args: argparse.Namespace) -> None: