30 lines
1 KiB
Python
30 lines
1 KiB
Python
|
# 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]
|