2021-06-09 18:44:10 +00:00
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#!/usr/bin/env python3
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"""Global utility methods and classes."""
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from distutils.util import strtobool
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2023-06-28 06:19:11 +00:00
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from typing import ClassVar
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2021-06-09 18:44:10 +00:00
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def to_bool(string):
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return bool(strtobool(str(string)))
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class Singleton(type):
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"""Meta singleton class."""
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2023-06-28 06:19:11 +00:00
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_instances: ClassVar[dict] = {}
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2021-06-09 18:44:10 +00:00
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def __call__(cls, *args, **kwargs):
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if cls not in cls._instances:
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cls._instances[cls] = super().__call__(*args, **kwargs)
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2021-06-09 18:44:10 +00:00
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return cls._instances[cls]
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