[Python-Dev] PEP 515: Underscores in Numeric Literals (revision 3)

[Guido van Rossum]

Is anyone going to mark the PEP as accepted?

On Thu, May 12, 2016 at 8:11 AM, Guido van Rossum <gvanrossum at gmail.com>
wrote:

> OK, then PEP 515 is now officially accepted! Congratulations. Start the
> implementation work!
>
> --Guido (mobile)
> On May 11, 2016 10:33 PM, "Georg Brandl" <g.brandl at gmx.net> wrote:
>
> I'm happy with the latest version.
>
> Georg
>
> On 05/11/2016 06:46 PM, Guido van Rossum wrote:
> > If the authors are happy I'll accept it right away.
> >
> > (I vaguely recall there's another PEP that's ready for pronouncement --
> but
> > which one?)
> >
> > On Wed, May 11, 2016 at 9:34 AM, Brett Cannon <brett at python.org
> > <mailto:brett at python.org>> wrote:
> >
> >     Is there anything holding up PEP 515 at this point in terms of
> acceptance or
> >     implementation?
> >
> >     On Sat, 19 Mar 2016 at 11:56 Guido van Rossum <guido at python.org
> >     <mailto:guido at python.org>> wrote:
> >
> >         All that sounds fine!
> >
> >         On Sat, Mar 19, 2016 at 11:28 AM, Stefan Krah <
> stefan at bytereef.org
> >         <mailto:stefan at bytereef.org>> wrote:
> >         > Guido van Rossum <guido <at> python.org <http://python.org>>
> writes:
> >         >> So should the preprocessing step just be s.replace('_', ''),
> or should
> >         >> it reject underscores that don't follow the rules from the PEP
> >         >> (perhaps augmented so they follow the spirit of the PEP and
> the letter
> >         >> of the IBM spec)?
> >         >>
> >         >> Honestly I think it's also fine if specifying this exactly is
> left out
> >         >> of the PEP, and handled by whoever adds this to Decimal.
> Having a PEP
> >         >> to work from for the language spec and core builtins (int(),
> float()
> >         >> complex()) is more important.
> >         >
> >         > I'd keep it simple for Decimal: Remove left and right
> whitespace (we're
> >         > already doing this), then remove underscores from the
> remaining string
> >         > (which must not contain any further whitespace), then use the
> IBM grammar.
> >         >
> >         >
> >         > We could add a clause to the PEP that only those strings that
> follow
> >         > the spirit of the PEP are guaranteed to be accepted in the
> future.
> >         >
> >         >
> >         > One reason for keeping it simple is that I would not like to
> slow down
> >         > string conversion, but thinking about two grammars is also a
> problem --
> >         > part of the string conversion in libmpdec is modeled in ACL2,
> which
> >         > would be invalidated or at least complicated with two grammars.
> >         >
> >         >
> >         >
> >         > Stefan Krah
> >         >
> >         > _______________________________________________
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> >
> >
> >
> >         --
> >         --Guido van Rossum (python.org/~guido <http://python.org/~guido
> >)
> >         _______________________________________________
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> >
> >
> >
> >
> > --
> > --Guido van Rossum (python.org/~guido <http://python.org/~guido>)
> >
> >
>
>
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-- 
--Guido van Rossum (python.org/~guido)
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