code: def __init__(self, proc_id, pipe, master):
      super(_Worker, self).__init__()
      self.proc_id = proc_id
      self.pipe = pipe
      self.converter = master.converter
      self.model = master._master
      self.device = master._devices[proc_id]
      self.iterator = master._mpu_iterators[proc_id]
      self.n_devices = len(master._devices)
  
imports: import multiprocessing
  import warnings
  import numpy
  import six
  import chainer
  from chainer.backends import cuda
  from chainer.dataset import convert
  from chainer import reporter
  from chainer.training.updaters import standard_updater
label_desc: Use image node_id 1 to create a new _Worker object from inherited base classes: multiprocessing with example: obj = _Worker(proc_id, pipe, master)