code: def test_numpyinterop_feedforwardnet_error(device_id):
      from cntk.ops.tests.ops_test_utils import cntk_device
  
      try_set_default_device(cntk_device(device_id))
  
      test_error = ffnet()
      expected_test_error = 0.04
  
      assert np.allclose(
          test_error, expected_test_error, atol=TOLERANCE_ABSOLUTE
      )
  
imports: import os, sys
  import numpy
  import shutil
  from cntk.device import try_set_default_device
  from FeedForwardNet import ffnet
label_desc: Use image node_id 1 for calling a global function with example usage: test_numpyinterop_feedforwardnet_error(device_id) without return types