python import argparse parser = argparse.ArgumentParser(description='A simple CLI framework example') parser.add_argument('command', help='The command to execute') parser.add_argument('--option', help='The optional parameter') args = parser.parse_args() def execute_command(command, option): if command == 'hello': print('Hello, World!') elif command == 'add': result = 0 if option: result = int(option) print(f'The result is {result + 1}') execute_command(args.command, args.option) python cli_framework.py hello python cli_framework.py add --option 5