Seek support for new slice syntax PEP.

[Gregory Ewing]

Terry Reedy wrote:
> So it would be 
> MUCH more useful if that notation created a range object.
> 
> for i in [1:n]: ...
> 
> So I would oppose the slice proposal in favor of a range proposal.

Another possibility would be to unify range and slice
objects so that they're actually the same thing. Then
the same notation could be used for both purposes.

-- 
Greg