Hi, On Fri, Oct 9, 2009 at 3:30 PM, Benji York <benji@zope.com> wrote:
On Fri, Oct 9, 2009 at 8:51 AM, Jonathan Ballet <jonathan.ballet@securactive.net> wrote:
If I want this option to have an optional value, I think I must set a default value to the option. But then, how to make the distinction between the two first cases? I might miss something I don't know in option parsing, but I didn't find anything...
I'd try the same approach as default options in Python functions. Make the default None (which isn't a valid seed) and then you can tell the difference.
That's what I originally though, but then, how can I make the difference between 'the user has not set --shuffle' (the option's value is then None), and 'the user has set the --shuffle option, but without specifying a seed' (then the option's value is None again)? Jonathan