[Tutor] How to model objects aimed to persistence?

[Alan Gauld]

"Knacktus" <knacktus at googlemail.com> wrote

###########################################################################
> my_favourite_movies = FavouriteMovies([Movie("Gladiator", "Russel 
> Crowe")])
> ###########################################################################
>
> When I want to rebuild the data from a xml file or database, my 
> objects somehow need to know which references to other objects they 
> hold.

OK, If you limit yourself to XML or a database then yes you will
need an ID and use the IDs as references. Thats why Pickle/Shelve
are so convenient for persistence - they don;t need the references,
you can just pickle the list of objects, or whatever.

HTH,

-- 
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/