code: def test_tuple(self):
      def tuple_test(x: Any):
          assert torch.jit.isinstance(x, Tuple[str, int, str])
          assert not torch.jit.isinstance(x, Tuple[int, str, str])
          assert not torch.jit.isinstance(x, Tuple[str])
  
      x = ("a", 1, "b")
      self.checkScript(tuple_test, (x,))
  
imports: import os
  import sys
  import torch
  import warnings
  from typing import List, Any, Dict, Tuple, Optional
  from torch.testing._internal.jit_utils import JitTestCase
label_desc: Use image node_id 8 for calling the TestIsinstance obj's underlying member method code with example usage: obj.test_tuple() without return types