I confirm that all I have to do in order to successfully load a pickled object of class A is to declare
class A: def __init__(self): pass Although the object has tons of fields Quid ? Regards, Philippe Philippe C. Martin wrote: > Hi, > > Shuffling files around in my project, I notice I broke everything when I > stopped declaring classes in a program that "pickled.loaded" existing > pickled object of type "classes". > > The error message being that the class(es) was unknown. > > However, I _think_, I did manage to do the following in the past: > > 1) pickle.dump class "test" with field "A" intialized in declaration > 2) pickle.load class "test" and add field "B" then pickle.dumps it > 3) pickl.load class "test" with no problem although field "B" was not > initialized in that declaration. > > > I have two questions: > > 1) Why cannot the interpreter accept to load an object which class is not > defined ? > 2) assuming the above (.... I _think_ ....) is true, why then is there not > problem in loading an object which changes dynamically. > > Hope I'm making sense. > > Any clue ? > > Thanks, > > Philippe -- http://mail.python.org/mailman/listinfo/python-list