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Thu Aug 12 00:01:34 CEST 2010 · https://mail.python.org/pipermail/python-dev/2010-August/103025.html

On Aug 11, 2010, at 2:37 PM, Terry Reedy wrote:

> On 8/11/2010 3:16 PM, Raymond Hettinger wrote:
> 
>> The ability to introspect is basic to Python's design.
>> Objects know their class, functions know their code objects,
>> bound methods know both their underlying function,
>> classes know their own class dictionary, etc.
> 
> Should iterators know their iterable when there is one?
> 
> There is or was a request for this on python-list, I believe, a few days ago. I suggested bad idea because
> a) iterator requirement is intentially minimal
> b) not all iterators have underlying object
> c) OP wanted to mutate underlying object (list) while iterating
> I did give a my_iter class that would do what OP wanted.

I agree with your assessment.
Also an iterator is a protocol, not a single class.

Raymond

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[Python-Dev] Proposed tweaks to functools.wraps