[Python-ideas] namedtuple redesign goals

Ethan Furman ethan at stoneleaf.us
Mon Jul 24 07:02:33 EDT 2017

On 07/23/2017 10:47 AM, Michel Desmoulin wrote:

 > I'm not sure why everybody have such a grip on the type.

If I understand the goal of "a new namedtuple" correctly, it is not to come up with yet another namedtuple type -- it is 
to make the existing collections.namedtuple a faster experience, and possibly add another way to create such a thing.

This means that the "replacement" namedtuple MUST be backwards compatible with the existing collections.namedtuple, and 
keeping track of type is one of the things it does:

--> from collections import namedtuple
--> Point = namedtuple('Point', 'x y')
--> p1 = Point(3, 7)
--> p1.x
--> p1.y
--> isinstance(p1, Point)


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