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

[Christian Heimes]

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