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On Jun 7, 2014, at 6:25 AM, R. David Murray <rdmurray@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