code: def forward_cpu(self, inputs):
      t = backend.from_chx(self.t)  # Workaround for ChainerX.
  
      gx = numpy.zeros(self.shape, self.dtype)
      gx[six.moves.range(self.t.size), t] = inputs[0]
      return (gx,)
  
file_path: chainer/chainer/functions/array/select_item.py
imports: import numpy
  import six
  import chainer
  from chainer import backend
  from chainer.backends import cuda
  from chainer import function_node
  from chainer.utils import type_check
label_desc: Use image node_id 2 for calling the Assign obj's underlying member method code with example usage: obj.forward_cpu(inputs) and returns: gx