code: def test_data_ptr_tensor_cpu():
      arr = np.random.rand(3, 5, 6)
      tensor = TensorCPU(arr, "NHWC")
      from_tensor = py_buffer_from_address(
          tensor.data_ptr(),
          tensor.shape(),
          types.to_numpy_type(tensor.dtype),
      )
      assert np.array_equal(arr, from_tensor)
  
imports: import numpy
  import nvidia.dali.fn
  import nvidia.dali.types
  import warnings
  from numpy.testing import assert_array_equal
  from nvidia.dali import pipeline_def
  from nvidia.dali.backend_impl import TensorCPU, TensorListCPU, TensorListGPU
  from nvidia.dali.backend_impl import types
  import nvidia.dali
  from nose_utils import assert_raises
  from nose import SkipTest
  from test_utils import dali_type_to_np, py_buffer_from_address, get_device_memory_info
label_desc: Use image node_id 9 for calling a global function with example usage: test_data_ptr_tensor_cpu() without return types