Source code for sparseml.utils.singleton

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"""
Code related to the Singleton design pattern
"""

__all__ = ["Singleton"]


[docs]class Singleton(type): """ A singleton class implementation meant to be added to others as a metaclass. Ex: class Logger(metaclass=Singleton) """ _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]