On Wed, Jun 16, 2021 at 10:24 PM David Mertz <[email protected]> wrote:

>
> If you read the BPO the OP linked, that was a suggested patch to optimize
>> sum(list_of_lists) -- I'm not sure that's such a bad idea after all.
>>
>
> The proposal was to drop in .__iadd__() for .__add__(), wasn't it? As a
> heavy NumPy user, you know those sometimes have different semantics
>

well, yes, but the numpy example was brought up -- and a patch that
addressed that was offered.

I think it's clearly possible to optimize certain types -- and maybe all
Sequence container types. The question is whether that's a good idea.

The fact that it was decided to raise for strings, when an optimization
could have been added answers that question.

Despite my personal opinion, I think the only options are to raise for more
types, with a helpful message, or just leave it alone.

-CHB

-- 
Christopher Barker, PhD (Chris)

Python Language Consulting
  - Teaching
  - Scientific Software Development
  - Desktop GUI and Web Development
  - wxPython, numpy, scipy, Cython
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