I have a typer cli command like this: @app.command( no_args_is_help=True, help="Test command help text" ) def test(name:str = typer.Option( None, "--test", "-t", help="help text" )): print(name) How can I make this flags --test or -t optional? for example if i just write command python3 code.py test -t, I want it to print "all" or something default. Is there a way to make this flag arguments optional? I tried if test is None: test = "all" also I tried to make default value "all" instead of None but still not working. I always get this error: Option [flag name] requires an argument Continue reading...