[Bf-committers] properties per datablock & python

[Martin Poirier]

--- On Wed, 5/21/08, Joe Eagar <joeedh at gmail.com> wrote:

> One big warning: As always with our API, do NOT keep
> references to id 
> properties floating around.  This *will* cause crashes. 
> Always re-get 
> the reference whenever you need it.  This is true for most
> things in the 
> api as well, btw.

That's fixed in 2.46, IIRC.

BPy keeps a "database" of weakref to blender python data, when the datablocks are freed from Blender, BPy marks them as invalid and subsequent access to the data in python triggers exceptions (and not crashes).

Martin