25 lines
918 B
Python
25 lines
918 B
Python
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
|
|
#
|
|
# Copyright (c) 2023 Huawei Device Co., Ltd.
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
class Singleton(type):
|
|
_instances = {}
|
|
|
|
def __call__(cls, *args, **kwargs):
|
|
if cls not in cls._instances:
|
|
cls._instances[cls] = super(Singleton,
|
|
cls).__call__(*args, **kwargs)
|
|
return cls._instances[cls] |