[Python-Dev] PEP 3121, 384 Refactoring Issues

"Martin v. Löwis" martin at v.loewis.de
Mon Jul 14 17:21:25 CEST 2014

Am 12.07.14 17:19, schrieb Nick Coghlan:
> Using the stable ABI for standard library extensions also serves to
> decouple them further from the internal details of the CPython runtime,
> making it more likely they will be able to run correctly on alternative
> interpreters (since emulating or otherwise supporting the limited API is
> easier than supporting the whole thing).

There are two features to be gained for the standard library from that

A. with proper module shutdown support, it will be possible to release
   objects that are currently held in C global/static variables, as the
   C global variables will go away. This, in turn, is a step forward in
   the desire to allow for proper leak-free interpreter shutdown, and
   in the desire to base interpreter shutdown on GC.

B. with proper use of heap types (instead of the static type objects),
   support for the multiple-interpreter feature will be improved, since
   type objects will be per-interpreter, instead of being global. This,
   in turn, is desirable since otherwise state changes can leak from
   one interpreter to the other.

So I still maintain that the change is desirable even for the standard


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