def num_examples(self):
    if (self.fold == 'train'):
        return 176975
    elif (self.fold == 'valid'):
        return 22349
    elif (self.fold == 'test'):
        return 22013
def num_examples(self):
    if (self.fold == 'train'):
        return 176975
    elif (self.fold == 'valid'):
        return 22349
    elif (self.fold == 'test'):
        return 22013