code: def test_tuple_iterator_return(self):
      def fn(x):
          it = iter(tuple(range(10)))
          x = x + next(it)
          x = x + next(it)
          x = unsupported(x, x)
          x = x + next(it)
          x = x + next(it)
          x = unsupported(x, x)
          x = x + next(it)
          x = x + next(it)
          return x, it
  
      v1 = torch.randn(10)
      v2, it2 = fn(v1)
      cnt = torch._dynamo.testing.CompileCounter()
      opt_fn = torch._dynamo.optimize(cnt)(fn)
      v3, it3 = opt_fn(v1)
      v4, it4 = opt_fn(v1)
      self.assertEqual(v2.tolist(), v3.tolist())
      self.assertEqual(v2.tolist(), v4.tolist())
      self.assertEqual(list(it2), list(it3))
      self.assertEqual(cnt.frame_count, 3)
      self.assertEqual(cnt.op_count, 6)
  
imports: from unittest.mock import patch
  import torch
  import torch._dynamo.test_case
  import torch._dynamo.testing
  from torch._dynamo.testing import unsupported
  from torch._dynamo.utils import ifdynstaticdefault
label_desc: Use image node_id 43 for calling the SubGraphTests obj's underlying member method code with example usage: obj.test_tuple_iterator_return() and returns: x,  it