code: def test_stringize_deep():
      assert strings.stringize_deep(
          {
              "key 1": "value 1",
              "ключ 2": "значение 2",
              "list": ["ключ 2", "key 1", ("к", 2)],
          }
      ) == {
          "key 1"
          if six.PY2
          else b"key 1": "value 1"
          if six.PY2
          else b"value 1",
          "ключ 2".encode("utf-8"): "значение 2".encode("utf-8"),
          ("list" if six.PY2 else b"list"): [
              "ключ 2".encode("utf-8"),
              "key 1" if six.PY2 else b"key 1",
              ("к".encode("utf-8"), 2),
          ],
      }
  
imports: import pytest
  import six
  from library.python import strings
label_desc: Use image node_id 9 for calling a global function with example usage: test_stringize_deep() without return types