code: def testFlattenAndPackWithDicts(self):
      # A nice messy mix of tuples, lists, dicts, and `OrderedDict`s.
      named_tuple = collections.namedtuple("A", ("b", "c"))
      mess = (
          "z",
          named_tuple(3, 4),
          {
              "c": (
                  1,
                  collections.OrderedDict(
                      [
                          ("b", 3),
                          ("a", 2),
                      ]
                  ),
              ),
              "b": 5,
          },
          17,
      )
  
      flattened = nest.flatten(mess)
      self.assertEqual(flattened, ["z", 3, 4, 5, 1, 2, 3, 17])
  
      structure_of_mess = (
          14,
          named_tuple("a", True),
          {
              "c": (
                  0,
                  collections.OrderedDict(
                      [
                          ("b", 9),
                          ("a", 8),
                      ]
                  ),
              ),
              "b": 3,
          },
          "hi everybody",
      )
  
      unflattened = nest.pack_sequence_as(structure_of_mess, flattened)
      self.assertEqual(unflattened, mess)
  
      # Check also that the OrderedDict was created, with the correct key order.
      unflattened_ordered_dict = unflattened[2]["c"][1]
      self.assertIsInstance(
          unflattened_ordered_dict, collections.OrderedDict
      )
      self.assertEqual(
          list(unflattened_ordered_dict.keys()), ["b", "a"]
      )
  
imports: import collections
  import dataclasses
  from absl.testing import parameterized
  import numpy
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.util import nest
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.framework import tensor
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 10 for calling the NestTest obj's underlying member method code with example usage: obj.testFlattenAndPackWithDicts() without return types