On 4/19/06, Terry Reedy <[EMAIL PROTECTED]> wrote: > > "Guido van Rossum" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] > > I once considered and rejected this syntax since another logical > > interpretation would be that any positional arguments are accepted but > > *ignored*. > > I was about to suggest that perhaps this is how it should be interpreted > ;-). > > Perhaps it is too much to use syntax to indicate whether positional args > should be silently ignored or raise an exception. Given > > def f(*ignored, a, b='yes'): <body> > > positional args will be ignored if 'ignored' if never referenced again. To > raise an exception, just add > > if ignored: raise TypeErrror("Positional args not allowed") > > Given that keyword only functions should be fairly rare (given that we have > survived thus long without), is a syntactic abbreviation needed?
You're right. This currently doesn't work because *args must be last (except for **kwds). but we're already considering an addition that allows kwd=default following *args; an explicit check for args==() is easy enough then. -- --Guido van Rossum (home page: http://www.python.org/~guido/) _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
