+1 for that, though this will need some careful design between perf
optimizations and how much general purpose it should be.
I remember a discussion years ago, whether this should go into python
batteries. Ended up unresolved, as the optimization goals depend alot on
the provided data structures. Maybe this can be avoided in django by
focussing on most typical nested data structures.
Cheers,
Jörg
Am 17.10.22 um 11:59 schrieb Markus Holtermann:
Hi David,
I think, I'm in support for a django.utils....flatten() function with
the requirements / constraints you outlined below.
Cheers,
Markus
On Mon, Oct 17, 2022, at 8:31 AM, David Sanders wrote:
Hi folks,
As part of PR 16175
<https://github.com/django/django/pull/16175> there was some
discussion around flattening lists/tuples as part of the solution. I
proposed that if we create a flattening function that there'd be some
benefit in sharing that in django.utils for other components if needed.
I'd like to garner "approval" + any thoughts on the best way to write
such a function.
* I'm aware that django.db expressions have similar-ish flatten()
methods
* The PR author, Ion Alberdi, has done some nice work in writing up
alternatives and measuring performance
* A generator based solution would be nice if it could finish
walking early if used with any()
* Opinions on maintainability (readability) vs performance would be
great
* Ideally I think it would be great if someone with some experience
with performant Python could chime in
Cheers,
David
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