code: def __init__(self, param):
      self.dtype = None
      self.__dict__.update(param)
  
imports: import functools
  import chainer
  import copy
  from chainer.backends.cuda import cupy
  import chainer.testing
  import chainer.testing.attr
  import numpy
  import pytest
  import chainermn
  from chainer.functions import sigmoid
  from chainer.functions import mean_squared_error
label_desc: Use image node_id 1 to create a new Param object from inherited base classes: object with example: obj = Param(param)