[Python-Dev] Better module shutdown procedure

[Antoine Pitrou]

Le Wed, 14 Oct 2009 18:27:37 -0500, Daniel Stutzbach a écrit :
> 
> Here is my understanding of the proposed procedure:
> 
> 1. Replace modules in sys.modules with weakrefs 2. Run the garbage
> collector
> 3. Replace globals in any remaining modules with None 4. Run the garbage
> collector
> 
> Is it possible for a __del__ method to be called in step 4 or not?  I am
> still unclear on this point. :-)

If an object is holding a reference to a module (e.g. self._sys = sys), 
then yes it should be possible because the reference has been creating a 
cycle.