I believe I have finally finished the work on the patch for PEP 448 (http://bugs.python.org/issue2292).  How do we get the PEP approved?  What else would we need to check it into Python?

Best,

Neil

On Tue, Jan 20, 2015 at 12:03 PM, Guido van Rossum <guido@python.org> wrote:

OK. I don't like arg unpackings after keyword args, for the same reason plain positional args aren't allowed after keyword args, but I guess I didn't pay attention when it was introduced, so we're stuck with it now, it's not the end of the world, and at least the definition is clear (collect all positional args first, then handle keyword args).

On Tue, Jan 20, 2015 at 8:51 AM, Neil Girdhar <mistersheik@gmail.com> wrote:

Okay, so: positional arguments neither follow keyword arguments nor keyword argument unpackings; iterable argument unpackings never follow keyword argument unpackings.

 

 

On Tue, Jan 20, 2015 at 11:47 AM, Joshua Landau <joshua@landau.ws> wrote:

On 20 January 2015 at 16:38, Guido van Rossum <guido@python.org> wrote:
> The PEP hasn't been accepted yet AFAIK...  I'm generally okay with allowing
> multiple *x things (except in an *unpack* position of course) but I still
> don't think we should be mixing positional and keyword args. So, no f(a,
> b=2, c), nor f(a, b=2, *c).
>

f(a, b=2, *c) is currently legal as both a call and as a definition:

    a, *c = 1, 2, 3

    def f(*args, **kwargs):
        print(args, kwargs)

    f(a, b=2, *c)
    #>>> (1, 2, 3) {'b': 2}

    def f(a, b=2, *c):
        print(a, b, c)

    f(1, 2, 3)
    #>>> 1 2 (3,)

So I imagine that's staying (or, at least, this PEP isn't removing
it). I don't think anyone is (yet) arguing for f(a, b=2, c).

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