[Python-3000] PEP: rename it.next() to it.__next__(), add a next() built-in

[python at rcn.com]

[Ka-Ping]
> Title: Renaming iterator.next() to iterator.__next__()
> ======================================================

[Josiah]
> It sounds and reads just fine, though I'm -1 on the change
> if only because 1) it adds a builtin, 2) it renames a 
> protocol method, making it potentially difficult and/or
> buggy to write forward or backward compatible code, 
> 3) it smells like gratuitous breakage.

And, more importantly, it is butt-ugly.


Raymond