[Python-3000] Ellipsis Literal

[Guido van Rossum]

On Jan 25, 2008 7:47 AM, Gisle Aas <gisle at activestate.com> wrote:
> On Jan 24, 2008, at 20:32, Guido van Rossum wrote:
>
> > Some folks thought it would be cute to be able to write incomplete
> > code like this:
> >
> > class C:
> >   def meth(self): ...
> >   ...
> >
> > and have it be syntactically correct.
>
> I think it would be been nice if "..." raised an NotYetImplemented
> exception if executed as a lone statement.  Is that desirable and
> doable?

That wouldn't work, because in slice syntax it's always been allowed
and meant to return the Ellipsis object. Changing this in some
contexts but not others would be confusing.

> BTW, Perl 6 also introduce the same feature and Larry calls it the
> "yadayadayada operator"[1].

Blah, bah. :-)

> Regards,
> Gisle
>
> >
> > PEP 3100 has the reference:
> > * ``...`` to become a general expression element [16]_ [done]
> > .. [16] python-3000 email
> >    http://mail.python.org/pipermail/python-3000/2006-April/000996.html
>
> [1] http://dev.perl.org/perl6/doc/design/syn/S06.html

-- 
--Guido van Rossum (home page: http://www.python.org/~guido/)