Question about exausted iterators

[Terry Reedy]

"Christophe" <chris.cavalaria at free.fr> wrote in message 
news:446c2dea$0$5306$626a54ce at news.free.fr...
>Instead of saying that all works as intended could you be a little
>helpful and tell me why it was intended in such an obviously broken way
>instead ?

I answered both your explicit and implied questions in good faith.  But you 
seem to be too attached to your pre-judgment to have benefited much, so I 
won't waste my time and yours saying more.  Instead I suggest that you try 
this:

1. Write a specification for your an alternate, more complicated, iterator 
protocol.
2. Write a simple class with .next method that implements your 
specification.
3. Test your class with your example.
4. Consider how you would persuade people to add the extra machinery 
needed.
5. Consider what you would do when people don't.

If you want, post a report on your experiment, and I will read it if I see 
it.

Terry Jan Reedy