def num_episodes(self):
    if (self.fold == 'train'):
        return 102401
    elif (self.fold == 'valid'):
        return 12806
    elif (self.fold == 'test'):
        return 12790
def num_episodes(self):
    if (self.fold == 'train'):
        return 102401
    elif (self.fold == 'valid'):
        return 12806
    elif (self.fold == 'test'):
        return 12790