Loading a file only once into an object and being able to access it from other modules
Thomas Guettler
guettli at thomas-guettler.de
Tue Dec 7 10:53:41 EST 2004
Am Tue, 07 Dec 2004 09:25:57 -0600 schrieb Philippe C. Martin:
> 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__.
Hi,
You have this module (mymod.py)
print "First import"
xmlfile=....
If you import mymod the second time, you
won't see "First import" again. The code
without indentation gets executed only once.
You can access your file with mymod.xmlfile.
HTH,
Thomas
--
Thomas Güttler, http://www.thomas-guettler.de/
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