On 7/9/2010 4:42 PM, Georg Brandl wrote: > Am 09.07.2010 22:26, schrieb Mark Dickinson: >> On Fri, Jul 9, 2010 at 8:37 PM, Dino Viehland<dinov at microsoft.com> wrote: >>> Terry wrote: >>>> This violates the important principle that allowed def and call arg >>>> sequences should match to the extent sensible and possible. In this >>>> sense, the SyntaxError is a bug. So I would fix this now for 3.2 and >>>> notify the other implementors. >>> >>> +1 on fixing it - trailing commas are awesome. I'm always annoyed in >>> C# where I frequently can't use them. This seems like a bug fix level >>> change that should be easy for the other implementations to fix. >> >> Thanks for all the feedback. >> >> If the grammar is changed to allow "def f(*, a,): pass", that still >> leaves some more open questions: which of the following should be >> valid? >> >> (1) def f(*args,): pass >> (2) def f(**kwargs,): pass >> (3) def f(*,): pass > > IMO all of them (though as you mention, (3) doesn't matter.) Agreed. It's one less thing to explain: "You can have a trailing comma in an argument list, unless there's a bare star, and in that case you can't have a comma; and also if ...". Ick. Eric.
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