Re: [PATCH v2 09/11] tools/kvm_stat: stop ignoring unhandled arguments

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

On 11/12/2017 12:25, Stefan Raspl wrote:
>                           )
> -    (options, _) = optparser.parse_args(sys.argv)
> +    options, ukn = optparser.parse_args(sys.argv)
> +    if len(ukn) != 1:
> +        sys.exit('Error: Unknown argument(s): ' + ', '.join(ukn[-2:]))

I'm replacing this with "unkn".  But, why "-2:" instead of "1:"?

Thanks,

Paolo