def __call__(self, *args):
        if args in self.__cache:
            return self.__cache[args]

        obj = super(Singleton, self).__call__(*args)
        self.__cache[args] = obj
        return obj
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/openpyxl-2.3.0-b2/openpyxl/compat/singleton.py/Cached.__call__/original