[Python-Dev] PEP 683: "Immortal Objects, Using a Fixed Refcount" (round 3)

I've updated PEP 683 for the feedback I've gotten. Thanks again for that! The updated PEP text is included below. The largest changes involve either the focus of the PEP (internal mechanism to mark objects immortal) or the possible ways that things can break on older 32-bit stable ABI

[Python-Dev] PEP 683: "Immortal Objects, Using a Fixed Refcount" (round 2)

Thanks to all those that provided feedback. I've worked to substantially update the PEP in response. The text is included below. Further feedback is appreciated. -eric PEP: 683 Title: Immortal Objects, Using a Fixed Refcount Author: Eric Snow , Eddie Elizondo

[Python-Dev] PEP 683: "Immortal Objects, Using a Fixed Refcount"

Eddie and I would appreciate your feedback on this proposal to support treating some objects as "immortal". The fundamental characteristic of the approach is that we would provide stronger guarantees about immutability for some objects. A few things to note: * this is essentially an