[ZODB-Dev] ZODB 3.9/3.8 incompatibility (was Re: Data.fs size grows non-stop)

Marius Gedminas marius at gedmin.as
Thu Dec 10 06:57:25 EST 2009

On Thu, Dec 10, 2009 at 11:08:25AM +0000, Chris Withers wrote:
> Marius Gedminas wrote:
> >   * In ZODB 3.8, the 'version' argument of ClientStorage.history (as well
> >     as other kinds of storages, I suppose) is mandatory.  In ZODB 3.9
> >     it's gone.
> > 
> >     Solved by peeking into the method signature with inspect.getargspec()
> >     and supplying a version only if it's needed.
> I believe this may be fixed with 3.9.4 is released.
> ...but it sounds like your code isn't ending up using the Z303 adapter, 
> which is why you're running into the problem.

What's Z303?

> How are you mixing versions? 3.8 on client and 3.9 on server or?

I'm not mixing versions at runtime; my intent is to write code that
works with either ZODB 3.8.x or 3.9.x.

You can see it here in all its glory:


> (sorry, I lost the previous thread and saw this as a new one when Jim 
> changed the subject line...)

This is a new topic, completely unrelated to the previous thread.

Marius Gedminas
I'm a shareware signature!  Send $2 if you use me, $10 for a manual.
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