metaclass.py
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async_context.py
decorator_cache.py
metaclass.py
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metaclass.py
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class SingletonMeta(type):↵
_instances = {}↵
def __call__(cls, *args, **kwargs):↵
if cls not in cls._instances:↵
cls._instances[cls] = super().__call__(*args, **kwargs)↵
return cls._instances[cls]
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