class_docstr: Initializes array with constant value.
  
  Attributes:
      ~Constant.fill_value (scalar or :ref:`ndarray`):
          A constant to be assigned to the initialized array.
          Broadcast is allowed on this assignment.
      dtype: Data type specifier.
code: def __init__(self, fill_value, dtype=None):
      self.fill_value = fill_value
      super(Constant, self).__init__(dtype)
  
imports: import numpy
  import chainer
  from chainer import backend
  from chainer import initializer
  from chainer import types
label_desc: Use image node_id 1 to create a new Constant object from inherited base classes: _Constant with example: obj = Constant(fill_value, dtype)