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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_classes(self, classes):
 """ Helper to rename the classes, if provided by a dict keyed in by the orignal keys Parameters classes : dict Dict of class named keyed in by sample IDs. Raises ------ TypeError If classes is not a dict. ValueError If all samples in dataset are not present in input dict, or one of they samples in input is not recognized. """

        if not isinstance(classes, dict):
            raise TypeError('Input classes is not a dict!')
        if not len(classes) == self.num_samples:
            raise ValueError('Too few items - need {} keys'.format(self.num_samples))
        if not all([key in self.keys for key in classes]):
            raise ValueError('One or more unrecognized keys!')
        self.__classes = classes