Source code for gojo.exception

# Exceptions module
#
# Author: Fernando García Gutiérrez
# Email: ga.gu.fernando.concat@gmail.com
#
class IncorrectNumberOfClasses(Exception):
    """ Exception thrown when the input number of classes in an array is different from the predefined by the user. """
    def __init__(self, detected_classes: int, specified_classes: int, in_var: str = None):
        self.message = 'The number of detected classes ({}) does not match the number ' \
                       'of predefined classes ({}).'.format(detected_classes, specified_classes)

        if in_var is not None:
            self.message += ' Error in variable "{}"'.format(in_var)

        super().__init__(self.message)


class MissingArrayDimensions(Exception):
    """ Exception thrown when the input array does not match the expected number of dimensions """
    def __init__(self, expected_n_dims: int, input_n_dims: int, in_var: str = None):
        self.message = 'The number of dimensions ({}) does not match the expected number ' \
                       'of dimensions ({}).'.format(input_n_dims, expected_n_dims)

        if in_var is not None:
            self.message += ' Error in variable "{}"'.format(in_var)

        super().__init__(self.message)


class UnfittedEstimator(Exception):
    """ Exception thrown when trying to make predictions without performing a previous model fit. """
    def __init__(self):
        self.message = 'Before making inferences through a model by calling the "performInferences()" method, it ' \
                       'is necessary to adjust the model by calling the "train()" method.'

        super().__init__(self.message)


class UnfittedTransform(Exception):
    """ Exception thrown when trying to apply transforms without performing a previous transform fit. """
    def __init__(self):
        self.message = 'Before applying transforms by calling the "transform()" method, it is necessary to '\
                       'adjust the transform by calling the "fit()" method.'

        super().__init__(self.message)


class DataLoaderError(Exception):
    """ Exception thrown when a data-loader operation failed. """
    def __init__(self, msg: str):
        super().__init__(msg)