#   Copyright (c) 2020 Club Raiders Project
#   https://github.com/HausReport/ClubRaiders
#
#   SPDX-License-Identifier: BSD-3-Clause

# From: https://stackoverflow.com/questions/6760685/creating-a-singleton-in-python

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]