docs on for-loop with no __iter__?

[Just]

In article <mailman.2962.1094543082.5135.python-list at python.org>,
 Steven Bethard <steven.bethard at gmail.com> wrote:

> It would have made describing the protocol somewhat more complex, but it 
> would 
> have made using the protocol in a class simpler.  Moot point of course, since 
> I'm fully convinced that changing the protocol is infeasible. =)

Why on earth would you want to improve a protocol that's only there for 
legacy reasons, and has been replaced by something vastly better?

Just