Incomplete example function that lets a user fill out the parameters for an ArgumentParser interactively

argparse_interactive.py

def run_interactive(parser):
    """Inspect the argument parser and let the user decide on values for
    all parameters interactively.
    """
    args = []

    print "You are running this script in interactive mode. " + \
        "Press C-d to abort. Run with --help to see more options."

    try:
        for action in parser._actions:
            store = action.option_strings[-1]

            if action.type == int:
                prompt = "{} [{}]\n".format(action.help, action.default)
                val = raw_input(prompt)
                if val:
                    args += [store, val]

            elif type(action.default) == bool:
                if action.default:
                    default = "y"
                    choices = "[Y/n]"
                else:
                    default = "n"
                    choices = "[y/N]"

                prompt = "{} {}\n".format(action.help, choices)
                val = raw_input(prompt).lower()
                if val and val != default:
                    args.append(store)
    except EOFError:
        print "\nAborting...\n"
        sys.exit(1)

    cmd = ' '.join([__file__] + args)

    print "Command is:"
    print cmd
    print "Do you want to run this command? [y/n]"

    while True:
        run = sys.stdin.readline().strip().lower()
        if run == "y":
            print "running ", cmd
            args = parser.parse_args(passed_args)
            return args
        elif run == "n":
            sys.exit(1)
        else:
            print "y(es) or n(o) please"