code: def test_feed_with_helper_function(self, x):
      def f(inputs, _):
          self.assertEqual(x.shape, inputs[0].shape)
          self.assertEqual(type(inputs[0].shape), tuple)
          self.assertEqual(type(inputs[0].data), np.ndarray)
          np.testing.assert_almost_equal(x, inputs[0].data)
  
      net = core.Net("test")
      net.Python(f)(["x"], [])
      workspace.FeedBlob("x", x)
      workspace.RunNetOnce(net)
  
imports: from caffe2.python import core, workspace
  from caffe2.python.core import CreatePythonOperator
  import caffe2.python.hypothesis_test_util
  from hypothesis import given, settings
  import hypothesis.strategies
  import numpy
label_desc: Use image node_id 4 for calling the PythonOpTest obj's underlying member method code with example usage: obj.test_feed_with_helper_function(x) without return types