That's great and it works too, thank you! My only arising question is why should i "derive from object, so that you get a new-style class."
I've looked online and found this (http://www.geocities.com/foetsch/python/new_style_classes.htm) but I not sure it tells why I would want to do this this way. Thanks again for your help Andy Paul McGuire wrote: > My initial tests using pickle and a simple class system (shown below) have > failed. The method shown below fails with a AttributeError: > 'FakeModule' object has no attribute 'Spod', so when I create a an empty > class Spod in the new session, it generates an IndexError:(list index out of > range) > > Is there a better way to do this? > > > I'm assuming that "# New session" marks the beginning of a separate Python > file. The problem is that the Spod class definition is not included in the > pickle file, so you must import that as well, before loading back the > pickled fish object. Do this; > > 1. Put Spod in its own module, let's call it spod.py. (While you are at it, > have Spod derive from object, so that you get a new-style class.) > 2. Create test1.py to pickle a Spod. Have test1.py import spod, and then > have your code that creates spod.Spod("andy") and pickles it to test.pickle. > 3. Create test2.py to unpickle a Spod. Have test2.py *also* import spod, > and then have the rest of your code that follows "# New session". Modify > the pickle.load statement to save the result to a variable, and then you can > verify that its name is "andy", type is "Spod", etc. > > -- Paul > > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
