code: def test_cpp_iterators():
      assert m.tuple_iterator() == 12
      assert m.dict_iterator() == 305 + 711
      assert m.passed_iterator(iter((-7, 3))) == -4
  
imports: import contextlib
  import sys
  import types
  import pytest
  import env
  from pybind11_tests import detailed_error_messages_enabled
  from pybind11_tests import pytypes
label_desc: Use image node_id 44 for calling a global function with example usage: test_cpp_iterators() without return types