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26 lines
568 B
Python
26 lines
568 B
Python
#!/usr/bin/env python3
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"""Global utility methods and classes."""
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import os
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from distutils.util import strtobool
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def normalize_path(path):
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if path:
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return os.path.abspath(os.path.expanduser(os.path.expandvars(path)))
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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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_instances = {}
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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(Singleton, cls).__call__(*args, **kwargs)
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return cls._instances[cls]
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