[Python-ideas] Where should grouping() live (was: grouping / dict of lists)

[Chris Barker - NOAA Federal]

On Jul 6, 2018, at 2:10 AM, Steven D'Aprano <steve at pearwood.info> wrote:


I would consider statistics

to have similarities - median, mean etc are aggregate functions.


Not really, more like reduce, actually -/ you get a single result.

Histograms

are also doing something similar to grouping.

.(Yes, a few statistics apply to
nominal and ordinal data too,


And for that, a generic grouping function could be used.

In fact, allowing Counter to be used as the accumulater was one suggestion
in this thread, and would build s histogram.

Now that I think about it, you could write a key function that built a
histogram for continuous data as well.

Though that might be a bit klunky.

But if someone thinks that’s a good idea, a PR for an example would be
accepted:

https://github.com/PythonCHB/grouper

-CHB






-- 
Steve
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