[Python-ideas] Multiple level sorting in python where the order of some levels may or may not be reversed
Sven R. Kunze
srkunze at mail.de
Mon Oct 17 16:06:22 EDT 2016
On 16.10.2016 09:35, Alireza Rafiei wrote:
> Awesome! Thanks for the thorough explanation.
Indeed. I also didn't know about that detail of reversing. :) Amazing.
(Also welcome to the list, Alireza.)
>
> def multisort(xs, specs):
> for key, reverse in reversed(specs):
> xs.sort(key=key, reverse=reverse)
>
> That's all it takes! And it accepts any number of items in `specs`.
> Before you worry that it's "too slow", time it on real test data.
> `.sort()` is pretty zippy, and this simple approach allows using
> simple key functions. More importantly, it's much easier on your
> brain ;-)
>
>
@Tim
Do you think that simple solution could have a chance to be added to
stdlib somehow (with the possibility of speeding it up in the future)?
Regards,
Sven
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