[Python-3000] Octal

[Patrick Maupin]

Sure.  I'll do that tonight or tomorrow.

It would be great to get my feet wet on the process on a relatively
simple PEP.  One other question, first though -- not that I want to
open a huge can of worms or anything, but if we are trying to make
things nice and consistent, how about:

    x = int("0x500")

I know I can do int("500", 16) (and I think we want to keep that for
sure), but for the cases of binary, octal, and hexadecimal which we
have decided are special and useful, should the standard integer
constructor also take these strings?

Thanks,
Pat


On 3/14/07, Guido van Rossum <guido at python.org> wrote:
> Great! Mind writing up writing up a PEP that summarizes the discussion
> (a bit)? In particular it should explain (a) why we need octal
> literals; (b) why leading-zero is bad; (c) why we don't need general
> bases; (d) why 0t is the best choice. Oh, and please add 0b too;
> there's no formal proposal for that yet. Thanks!
>
> --Guido
>
> On 3/14/07, Patrick Maupin <pmaupin at gmail.com> wrote:
> > On 3/14/07, Oleg Broytmann <phd at phd.pp.ru> wrote:
> > >
> > >       0b101010
> > >       0c660
> > >       0xffe
> > >
> > >    I.e. the first letter from "bin", the second from "oct", the third from
> > > "hex". Also "0c" resembles "oc" from "oct".
> >
> > -1 on "c" It's too visually close to "0" in some fonts.
> >
> > +1 on "t"
> >
> > "t" does not appear in 'binary' or 'hexadecimal'
> > "x" does not appear in 'binary' or 'octal'
> > "b" does not appear in 'octal' or 'hexadecimal'
> >
> > And finally "c" means "character" in %s or PEP3101, and "t" is not yet
> > defined as a type specifier.
> >
> > So just to couch it all in terms of a proposal:
> >
> > - In 2.6 and 3.0, we add 0t1234 as a valid octal number
> > - In 2.6, we issue a deprecation warning for a leading literal 0 which
> > is followed immediately by another digit.
> > - In 3.0, that becomes an exception
> > - If people really are still using octal that much, we should also
> > consider adding it in to PEP3101.
> >
> > Regards,
> > Pat
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>
>
> --
> --Guido van Rossum (home page: http://www.python.org/~guido/)
>