Re: [Pytables-users] Caching Nodes and Files

[Francesc A. <fa...@py...>]

Hi Anthony,

El dl 03 de 08 del 2009 a les 16:08 -0400, en/na Anthony Foglia va
escriure:
> Anthony Foglia wrote:
> [...]
> >     Now in trying to abstract the disk storage, I'm having trouble 
> > figuring out how to keep track of the open files, and knowing when to 
> > close them.  I'm keeping a list of weakrefs to nodes in the file, and 
> > when they all go away, I try to close the file, but I get an exception 
> > "exceptions.AttributeError: AttributeError("'NoneType' object has no 
> > attribute '_f_close'",) in <function remove at ...> ignored". (remove 
> > doesn't call _f_close, but file.close, so it must be coming from in 
> > there.  (I've attached this implementation.)

Maybe what you are after is to personalize the behaviour of the `atexit`
hook when exiting PyTables.  See at:

http://pytables.org/moin/UserDocuments/AtexitHooks

and tell me if this helps.

Cheers,

Francesc