[Python-Dev] Update on PEP 523 and adding a co_extra field to code objects

Guido van Rossum guido at python.org
Mon Aug 29 18:51:12 EDT 2016

Anyway, given the outcome of Dino's tests I have no objections to the
PEP. (Though using Christian's hack would be cool.)

On Mon, Aug 29, 2016 at 3:28 PM, Christian Heimes <christian at python.org> wrote:
> On 2016-08-29 23:38, Brett Cannon wrote:
>> That means we still want to find a solution to attach arbitrary data to
>> code objects without sacrificing performance. One proposal is what's in
>> PEP 523 for the extra field. Another option is to make the memory
>> allocator for code objects pluggable and introduce a new flag that
>> signals that the object was created using a non-default allocator.
>> Obviously we prefer the former solution due to its simplicity. :)
> May I remind you that you can have the field with no extra memory cost?
> :) The struct has sub-par alignments.
> Christian
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--Guido van Rossum (python.org/~guido)

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