The way I see grouping is as an aggregation operation. As such, in my head, grouping is similar to min/max. However, if builtins are a no-go, then I feel I need to think a little outside the box:
Is there a possibility that there will be desired many more aggregate functions in the near future? Is there a case for collecting aggregate functions into another top level module? Also, I would consider statistics to have similarities - median, mean etc are aggregate functions. Histograms are also doing something similar to grouping. Apologies I have not offered any concrete suggestions, but just thought I should offer my thoughts. On Thu, 5 Jul 2018, 22:24 Chris Barker via Python-ideas, < python-ideas@python.org> wrote: > On Thu, Jul 5, 2018 at 3:26 AM, David Mertz <me...@gnosis.cx> wrote: > >> Yes, he said a definite no to a built-in. But he expressed a less >> specific lack of enthusiasm for collections classes (including Counter, >> which exists and which I personally use often). >> > > And a Grouping class would do more than Counter, which I find trivial > enough that I generally don't bother to use it. > > -CHB > -- > > Christopher Barker, Ph.D. > Oceanographer > > Emergency Response Division > NOAA/NOS/OR&R (206) 526-6959 voice > 7600 Sand Point Way NE (206) 526-6329 fax > Seattle, WA 98115 (206) 526-6317 main reception > > chris.bar...@noaa.gov > _______________________________________________ > Python-ideas mailing list > Python-ideas@python.org > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ >
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