class GifpyBaseException(Exception):

    pass

class GifpyInvalidArgument(GifpyBaseException):

    def __init__(self):
        message = "Parameter is invalid"
        super().__init__(message)

class GifpyInvalidFormat(GifpyBaseException):

    def __init__(self):
        message = "The requested format was not found"
        super().__init__(message)

class GifpyFormatNotAvailable(GifpyBaseException):

    def __init__(self):
        message = "The requested format is not a valid format"
        super().__init__(message)