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-# Copyright 2010-2011 Florent Le Coz <louiz@louiz.org>
-#
-# This file is part of Poezio.
-#
-# Poezio is free software: you can redistribute it and/or modify
-# it under the terms of the zlib license. See the COPYING file.
-
-"""
-Defines a Singleton function that initialize an object
-of the given class if it was never instantiated yet. Else, returns
-the previously instantiated object.
-This method is the only one that I can come up with that do not call
-__init__() each time.
-"""
-
-instances = {}
-def Singleton(cls, *args, **kwargs):
- if not cls in instances:
- instances[cls] = cls(*args, **kwargs)
- return instances[cls]