the fact that a User class has an attribute "roles" is due to the mapper placed on the User class, which initializes it with the "roles" attribute. if youre using mod_python, its likely using a multi-process model which can deserialize a User object into a new process where the owning module has not yet been imported, nor have any mappers been set up; pickle then imports the module on its own during the load() and is likely not initializing the mappers. you need to insure that either your mod_python process always imports your User class as well as initilalizes the mappers on it (and calls compile() on at least one of the mappers) before doing any pickle operations, or that simply importing User's module will also set up the mappers.
as a test, just write a script that serializes the mapped User to a file. then go into a python shell and try to open the file and pickle.load() it, without any imports. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
