pickling instances of metaclass generated classes

[lars van gemerden]

Hello,

Can someone help me with the following:

I am using metaclasses to make classes and these classes to make
instances. Now I want to use multiprocessing, which needs to pickle
these instances.

Pickle cannot find the class definitions of the instances. I am trying
to add a line to the __new__ of the metaclass to add the new class
under the right name in the right module/place, so pickle can find
it.

Is this the right approach? Can anyone explain to me where/how to add
these classes for pickle to find and maybe why?

Thanks in advance,

Lars