code: def __init__(self, n_units, n_out):
      super(MLP1Sub, self).__init__(
          l2=L.Linear(None, n_units), l3=L.Linear(None, n_out)
      )
  
imports: import argparse
  import chainer
  import chainer.cuda
  import chainer.functions
  import chainer.links
  from chainer import training
  from chainer.training import extensions
  import chainermn
  import chainermn.datasets
  import chainermn.functions
label_desc: Use image node_id 1 to create a new MLP1Sub object from inherited base classes: chainer with example: obj = MLP1Sub(n_units, n_out)