[Tutor] Pickling objects and then carrying on development

[Adam]

OK - I have a kind of strange question. I'm developing an
application which acts as a catalogue for magazine articles,
storing each piece of information in an OO manner. I've
written those objects to disk through pickle, which is an
enormously cool feature of python. 

My question relates to the pickled object and also the code
that relates to those objects. If I enter data in and pickle
this data, and then later develop my code adding more
methods and functionality to each class, will the old data
automatically gain all this new functionality when it is
unpickled later? 

The sequence would be:
1) Data entry and pickle...
2) Develop and improve code
3) Load data
4) continue with data entry
5) pickle once more

Does the new pickle pick up all the new code that I've been
working on, or will it b0rk the whole thing? 

Any advice greatly received. 


adam