code: def test_weak_tensor_iter(self):
      # Test normal weakTensor iteration.
      t = constant_op.constant([0, 1, 2], dtypes.int32)
      wt = WeakTensor.from_tensor(t)
      it_weak_tensor = iter(wt)
      for i in range(len(wt)):
          self.assertAllEqual(
              next(it_weak_tensor),
              WeakTensor.from_tensor(constant_op.constant(i)),
          )
  
      # Test multi-dimensional weakTensor iteration.
      t_multi = constant_op.constant([[1, 2], [3, 4]], dtypes.int32)
      wt_multi = WeakTensor(t_multi)
      it_wt_multi_tensor = iter(wt_multi)
      self.assertAllEqual(
          next(it_wt_multi_tensor), WeakTensor.from_tensor(t_multi[0])
      )
      self.assertAllEqual(
          next(it_wt_multi_tensor), WeakTensor.from_tensor(t_multi[1])
      )
  
      # Test scalar weakTensor iteration.
      t_scalar = constant_op.constant(1, dtypes.int32)
      wt_scalar = WeakTensor.from_tensor(t_scalar)
      with self.assertRaises(TypeError):
          # Cannot iterate over a scalar tensor.
          _ = iter(wt_scalar)
  
imports: import numpy
  from tensorflow.python.eager import backprop
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import extension_type
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.framework.weak_tensor import EagerWeakTensor
  from tensorflow.python.framework.weak_tensor import GraphWeakTensor
  from tensorflow.python.framework.weak_tensor import WeakTensor
  from tensorflow.python.module import module
  from tensorflow.python.platform import googletest
  from tensorflow.python.saved_model.load import load
  from tensorflow.python.saved_model.save import save
  from tensorflow.python.types import core
label_desc: Use image node_id 13 for calling the WeakTensorTest obj's underlying member method code with example usage: obj.test_weak_tensor_iter() without return types