code: def test_unicodize_deep():
      assert strings.unicodize_deep(
          {
              "key 1": "value 1",
              "ключ 2": "значение 2",
              "ключ 3".encode("utf-8"): "значение 3".encode("utf-8"),
          }
      ) == {
          "key 1": "value 1",
          "ключ 2": "значение 2",
          "ключ 3": "значение 3",
      }
  
imports: import pytest
  import six
  from library.python import strings
label_desc: Use image node_id 14 for calling a global function with example usage: test_unicodize_deep() without return types