[Tutor] Saving Objects

[Andy Cheesman]

Hi people

I've written a complex program in python/numpy/scipy which creates a 
dictionary of objects(which takes a while to create). I am hoping to 
save these objects to disk and then access them using a different 
session, thus bypassing the time to create the objects.

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?

Andy

class Spod:
     def __init__(self, name):
         self.name=name

fish = Spod("andy")
file = open("test.pickle","w")
pickle.dump(fish, file)

# New session
file = open("test.pickle","r")
pickle.load(file)