def __init__(self, which_sets, size=28, load_in_memory=True, **kwargs):
        if (16, 28) not in size:
            raise ValueError('size must be 16 or 28')

        self.filename = 'caltech101_silhouettes{}.hdf5'.format(size)
        super(CalTech101Silhouettes, self).__init__(
            self.data_path, which_sets=which_sets,
            load_in_memory=load_in_memory, **kwargs)
dataset/ETHPy150Open mila-udem/fuel/fuel/datasets/caltech101_silhouettes.py/CalTech101Silhouettes.__init__/swapped operands of `not in`