old_contents: import pkg_resources
  
  from chainermn import communicators  # NOQA
  from chainermn import datasets  # NOQA
  from chainermn import extensions  # NOQA
  from chainermn import functions  # NOQA
  from chainermn import global_except_hook  # NOQA
  from chainermn import iterators  # NOQA
  from chainermn import links  # NOQA
  from chainermn import optimizers  # NOQA
  
  from chainermn.communicators import CommunicatorBase  # NOQA
  from chainermn.communicators import create_communicator  # NOQA
  from chainermn.datasets import DataSizeError  # NOQA
  from chainermn.datasets import scatter_dataset  # NOQA
  from chainermn.extensions import create_multi_node_checkpointer  # NOQA
  from chainermn.extensions import create_multi_node_evaluator  # NOQA
  from chainermn.links import MultiNodeChainList  # NOQA
  from chainermn.optimizers import create_multi_node_optimizer  # NOQA
  
  global_except_hook._add_hook_if_enabled()
  
  __version__ = pkg_resources.get_distribution('chainer').version
  
new_contents: import chainer
  
  from chainermn import communicators  # NOQA
  from chainermn import datasets  # NOQA
  from chainermn import extensions  # NOQA
  from chainermn import functions  # NOQA
  from chainermn import global_except_hook  # NOQA
  from chainermn import iterators  # NOQA
  from chainermn import links  # NOQA
  from chainermn import optimizers  # NOQA
  
  from chainermn.communicators import CommunicatorBase  # NOQA
  from chainermn.communicators import create_communicator  # NOQA
  from chainermn.datasets import DataSizeError  # NOQA
  from chainermn.datasets import scatter_dataset  # NOQA
  from chainermn.extensions import create_multi_node_checkpointer  # NOQA
  from chainermn.extensions import create_multi_node_evaluator  # NOQA
  from chainermn.links import MultiNodeChainList  # NOQA
  from chainermn.optimizers import create_multi_node_optimizer  # NOQA
  
  global_except_hook._add_hook_if_enabled()
  
  __version__ = chainer.__version__
  
subject: fix chainermn version