__all__ = [
    "NotFittedError",
    "ConvergenceWarning",
    "DataConversionWarning",
    "DataDimensionalityWarning",
    "EfficiencyWarning",
    "FitFailedWarning",
    "SkipTestWarning",
    "UndefinedMetricWarning",
    "PositiveSpectrumWarning",
]

class NotFittedError(ValueError, AttributeError): ...
class ConvergenceWarning(UserWarning): ...
class DataConversionWarning(UserWarning): ...
class DataDimensionalityWarning(UserWarning): ...
class EfficiencyWarning(UserWarning): ...
class FitFailedWarning(RuntimeWarning): ...
class SkipTestWarning(UserWarning): ...
class UndefinedMetricWarning(UserWarning): ...
class PositiveSpectrumWarning(UserWarning): ...