code: def identity_prime(x):
      return np.ones(x.shape)
  
file_path: neon/tests/test_deconv_layer.py
imports: import itertools
  import numpy
  import pytest
  from neon import NervanaObject
  from neon.layers import Deconvolution
  from neon.initializers import Uniform
  from utils import allclose_with_out
label_desc: Use image node_id 6 for calling a global function with example usage: identity_prime(x) and returns: np