"Nick Coghlan" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Terry Reedy wrote: >> "Talin" <[EMAIL PROTECTED]> wrote in message >> news:[EMAIL PROTECTED] >>> Now, suppose you wanted to have 'key' be a keyword-only argument. >> >> Why? Why not let the user type the additional argument(s) without the >> parameter name?
Like Martin, you clipped most of the essential context of my question: Talin's second proposal. >>> The second syntactical change is to allow the argument name to >>> be omitted for a varargs argument: >>> def compare(a, b, *, key=None): >>> The reasoning behind this change is as follows. Imagine for a >>> moment a function which takes several positional arguments, as >>> well as a keyword argument: >>> def compare(a, b, key=None): Again I ask, why would one want that? And, is the need for that so strong as to justify introducing '*' as a pseudoparameter? > Because for some functions (e.g. min()/max()) you want to use *args, but > support some additional keyword arguments to tweak a few aspects of the > operation (like providing a "key=x" option). This and the rest of your 'explanation' is about Talin's first proposal, to which I already had said "The rationale for this is pretty obvious". Terry Jan Reedy _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
