old_contents: from chainer.datasets import cifar  # NOQA
  from chainer.datasets import dict_dataset  # NOQA
  from chainer.datasets import image_dataset  # NOQA
  from chainer.datasets import mnist  # NOQA
  from chainer.datasets import ptb  # NOQA
  from chainer.datasets import sub_dataset  # NOQA
  from chainer.datasets import transform_dataset  # NOQA
  from chainer.datasets import tuple_dataset  # NOQA
  
  
  # import class and function
  from chainer.datasets.cifar import get_cifar10  # NOQA
  from chainer.datasets.cifar import get_cifar100  # NOQA
  from chainer.datasets.concatenated_dataset import ConcatenatedDataset  # NOQA
  from chainer.datasets.dict_dataset import DictDataset  # NOQA
  from chainer.datasets.image_dataset import ImageDataset  # NOQA
  from chainer.datasets.image_dataset import LabeledImageDataset  # NOQA
  from chainer.datasets.mnist import get_mnist  # NOQA
  from chainer.datasets.ptb import get_ptb_words  # NOQA
  from chainer.datasets.ptb import get_ptb_words_vocabulary  # NOQA
  from chainer.datasets.sub_dataset import get_cross_validation_datasets  # NOQA
  from chainer.datasets.sub_dataset import get_cross_validation_datasets_random  # NOQA
  from chainer.datasets.sub_dataset import split_dataset  # NOQA
  from chainer.datasets.sub_dataset import split_dataset_n  # NOQA
  from chainer.datasets.sub_dataset import split_dataset_n_random  # NOQA
  from chainer.datasets.sub_dataset import split_dataset_random  # NOQA
  from chainer.datasets.sub_dataset import SubDataset  # NOQA
  from chainer.datasets.transform_dataset import TransformDataset  # NOQA
  from chainer.datasets.tuple_dataset import TupleDataset  # NOQA
  
new_contents: from chainer.datasets import cifar  # NOQA
  from chainer.datasets import dict_dataset  # NOQA
  from chainer.datasets import image_dataset  # NOQA
  from chainer.datasets import mnist  # NOQA
  from chainer.datasets import svhn # NOQA
  from chainer.datasets import ptb  # NOQA
  from chainer.datasets import sub_dataset  # NOQA
  from chainer.datasets import transform_dataset  # NOQA
  from chainer.datasets import tuple_dataset  # NOQA
  
  
  # import class and function
  from chainer.datasets.cifar import get_cifar10  # NOQA
  from chainer.datasets.cifar import get_cifar100  # NOQA
  from chainer.datasets.concatenated_dataset import ConcatenatedDataset  # NOQA
  from chainer.datasets.dict_dataset import DictDataset  # NOQA
  from chainer.datasets.image_dataset import ImageDataset  # NOQA
  from chainer.datasets.image_dataset import LabeledImageDataset  # NOQA
  from chainer.datasets.mnist import get_mnist  # NOQA
  from chainer.datasets.ptb import get_ptb_words  # NOQA
  from chainer.datasets.ptb import get_ptb_words_vocabulary  # NOQA
  from chainer.datasets.sub_dataset import get_cross_validation_datasets  # NOQA
  from chainer.datasets.sub_dataset import get_cross_validation_datasets_random  # NOQA
  from chainer.datasets.sub_dataset import split_dataset  # NOQA
  from chainer.datasets.sub_dataset import split_dataset_n  # NOQA
  from chainer.datasets.sub_dataset import split_dataset_n_random  # NOQA
  from chainer.datasets.sub_dataset import split_dataset_random  # NOQA
  from chainer.datasets.sub_dataset import SubDataset  # NOQA
  from chainer.datasets.transform_dataset import TransformDataset  # NOQA
  from chainer.datasets.tuple_dataset import TupleDataset  # NOQA
  
subject: Update __init__.py for svhn dataset