[Python-Dev] PEP 442: Safe object finalization

[Antoine Pitrou]

On Sun, 2 Jun 2013 19:16:17 -0700
Benjamin Peterson <benjamin at python.org> wrote:
> 2013/5/18 Antoine Pitrou <solipsis at pitrou.net>:
> > Calling finalizers only once is fine with me, but it would be a change
> > in behaviour; I don't know if it may break existing code.
> 
> I agree with Armin that this is better behavior. (Mostly significantly
> consistent with weakrefs.)

Keep in mind that it is a limitation of weakrefs, not a feature: you
can't "unclear" a weakref.

> > (for example, say someone is using __del__ to manage a freelist)
> 
> Do you know if it breaks any of the projects you tested it with?

I haven't tested it (yet).

Regards

Antoine.