wehub-resource-sync
18 lines
532 B
Python
18 lines
532 B
Python
class Singleton(type):
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"""
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Singleton class for having a single instance of a class.
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This ensures that instances aren't created more than once.
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"""
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_instances = {}
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def __call__(cls, *args, **kwargs):
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key = (cls, args, frozenset(kwargs.items()))
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if key not in cls._instances:
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instance = super().__call__(*args, **kwargs)
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cls._instances[key] = instance
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return cls._instances[key]
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def __setattr__(cls, name, value):
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super().__setattr__(name, value)
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