PEP 284, Integer for-loops

[Delaney, Timothy]

> From: Greg Ewing [mailto:greg at cosc.canterbury.ac.nz]
>
> > Or is it the intention that the construct is *not* limited 
> strictly to the
> > Python builtin classes "int" and "long"?  Will it work for 
> any class that
> > defines __lt__, __lg__, __gt__, __ge__, __add__, and 
> __radd__ methods, for
> > example?
> 
> So, floats will have to be treated as a special case,
> and if we're having special cases, it would be better to
> have *only* special cases -- i.e. restrict it to types
> that we'res sure we know enough about to do the right
> thing with. That means ints, longints and floats.

In that case, I must strongly oppose this PEP. Adding new *syntax* to
enhance only a few types in a way which looks nice, but has severe
limitations, is IMO the wrong thing to do.

As far as I can see, the only advantages to this PEP now are that it looks
nicer than range(), and it is easier to construct in some cases.

Tim Delaney