GC and finalizers [was: No destructor]

[Martin von Loewis]

Michael Hudson <mwh21 at cam.ac.uk> writes:

> Well, the point is that there are situations in which the gc has no
> way of working out the order to finalise objects in (Is it really
> undecidable?  Maybe), so if you want to be certain to avoid these then
> you have two options:
> 
>   1) don't create cycles
>   2) don't use finalizers

With Python 2, I'd rather recommend 

    3) don't use finalizers on "recursive" objects, only use
       them on "atoms" (i.e. leafs of the object graph)

Regards,
Martin