[Python-Dev] namedtuple implementation grumble

[Raymond Hettinger]

On Jun 7, 2014, at 6:25 AM, R. David Murray <rdmurray at bitdance.com> wrote:

>> I guess I could duck-type it based on the _fields attribute but that 
>> feels implicit and fragile.
>> 
>> What do you guys suggest?
> 
> I seem to remember a previous discussion that concluded that duck typing
> based on _fields was the way to go.  (It's a public API, despite the _,
> due to name-tuple's attribute namespacing issues.)

Yes.  That is the recommended approach.

IIRC that was Guido's suggestion rather than creating an abstract
base class for a named tuple (any tuple-like class with indexable
elements that are also accessible using named attributes).


Raymond

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