Custom args for cmd2 derived app.

[celephicus]

Simply, add a --verbose option to the app derived from cmd2.

So I can call my app 'sf2 --verbose' and have the parsed arg show up in self.args. Google gave me a Gemini code below that doesn't work (unrecognised kwarg). Has the API changed?

class MyApp(cmd2.Cmd):
    def __init__(self):
        # 1. Define the command-line argument
        parser = argparse.ArgumentParser()
        parser.add_argument('-v''--verbose', action='store_true', help='enable verbose output')
        
        # 2. Initialize cmd2 with the custom parser
        super().__init__(arg_parser=parser)
        
        # 3. Store the verbosity setting
        self.verbose = self.args.verbose

    def do_example(self, arg):
        """Example command that acts differently if verbose is enabled."""
        if self.verbose:
            self.poutput("Verbose mode is ON: Running detailed steps...")
        self.poutput("Example command finished.")