Re: Loading a file only once into an object and being able to access it from other modules

[Andrew James]

You're looking for the Singleton pattern to ensure that only one 
instance of your class is instantiated at a time. There's a particularly 
useful discussion about this at:

http://c2.com/cgi/wiki?PythonSingleton
I suggest you try the different methods out and pick the one best suited 
to your situation.

HTH,
Andrew
Philippe C. Martin wrote:
This is a basic question I'm sure but I do not know wether to use __builtin__, 
global, or a static method: 

I have a very large XML file that I load into dictionnaries defined in a class 
located in a module that is imported in many places.

Since the loading process is very slow, I would like the file not to be loaded 
on import or class instantiation, but only once (on first import or class 
instantiation).

Currently I have the loading code in the class __init__.
Is there a clean way to do this (I'd like to avoid global)?
Regards,
Philippe

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