[issue31086] Add namedattrgetter function which acts like attrgetter but uses namedtuple

[Raymond Hettinger]

Raymond Hettinger added the comment:

The principal use case for attrgetter() was to work with key-functions for sorted/min/max/groupby/nsmallest/nlargest.  Secondarily, it worked nicely with map() and filter() as a field extractor in a chain of iterators.  Neither these use cases would benefit from creating a namedtuple.

What are your use cases that are creating a need for a variant of attrgetter that returns namedtuples?

Also, how would this be useful with rename=True?  The user of the result wouldn't know the fields names in advance and hence wouldn't be able to access them.

Do you know of any cases where someone has used this recipe is real code?  Has it been tried out on users other than yourself?

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assignee:  -> rhettinger
nosy: +rhettinger

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