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https://github.com/aljazceru/Auto-GPT.git
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ee9f10a8d8
* remove unused imports automatically * add linters to pr template * remove useless try statement
23 lines
622 B
Python
23 lines
622 B
Python
"""The singleton metaclass for ensuring only one instance of a class."""
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import abc
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class Singleton(abc.ABCMeta, type):
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"""
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Singleton metaclass for ensuring only one instance of a class.
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"""
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_instances = {}
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def __call__(cls, *args, **kwargs):
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"""Call method for the singleton metaclass."""
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if cls not in cls._instances:
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cls._instances[cls] = super(Singleton, cls).__call__(*args, **kwargs)
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return cls._instances[cls]
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class AbstractSingleton(abc.ABC, metaclass=Singleton):
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"""
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Abstract singleton class for ensuring only one instance of a class.
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"""
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