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diff --git a/src/singleton.py b/src/singleton.py
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+# Copyright 2010-2011 Le Coz Florent <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 GNU General Public License as published by
+# the Free Software Foundation, version 3 of the License.
+#
+# Poezio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Poezio.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+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]