code: def test_dict_3(self):
      sf = tc.SFrame(
          {
              "dict": [
                  {"1": 1, "2": 3.2},
                  {
                      "1": 3.1,
                  },
                  {1: 1, "b": 2},
                  {1: 1, "b": 3},
                  {"a": 2, "b": 3},
              ]
              * 100,
              "dict[2]": [
                  {"1": 1, "2": 3.2},
                  {
                      "1": 3.1,
                  },
                  {1: 1, "b": 2},
                  {1: 1, "b": 3},
                  {"a": 2, "b": 3},
              ]
              * 100,
              "dict[3]": [
                  {"1": 1, "2": 3.2},
                  {
                      "1": 3.1,
                  },
                  {1: 1, "b": 2},
                  {1: 1, "b": 3},
                  {"a": 2, "b": 3},
              ]
              * 100,
          }
      )
  
      self._run_test(sf, 15)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import turicreate
  import math
  import uuid
  import random
  import copy
  from turicreate.toolkits import evaluation
  from turicreate.toolkits._main import ToolkitError
  import shutil
  import numpy
  from array import array
label_desc: Use image node_id 6 for calling the TreeExtractFeaturesTest obj's underlying member method code with example usage: obj.test_dict_3() without return types