Source code for zfit.util.checks

#  Copyright (c) 2019 zfit

[docs]class NotSpecified: _singleton_instance = None def __new__(cls, *args, **kwargs): instance = cls._singleton_instance if instance is None: instance = super().__new__(cls) cls._singleton_instance = instance return instance def __bool__(self): return False def __str__(self): return "A not specified state"
NOT_SPECIFIED = NotSpecified()
[docs]class ZfitNotImplemented: def __new__(cls, *args, **kwargs): raise RuntimeError("Cannot create an instance of it, meant to be used as a single object reference.")