code: def test_peephole_dict_len_no_optimization_keys_might_overlap(self):
      @torch.jit.script
      def foo(x: int):
          d = {0: 1, x: 2}
          return len(d)
  
      self.run_pass("peephole", foo.graph)
      FileCheck().check("DictConstruct").check("len").run(foo.graph)
  
imports: import torch
  from torch.testing._internal.jit_utils import JitTestCase, RUN_CUDA, _inline_everything
  from torch import nn
  from torch.testing import FileCheck
  from typing import Callable, List
  import unittest
label_desc: Use image node_id 33 for calling the TestPeephole obj's underlying member method code with example usage: obj.test_peephole_dict_len_no_optimization_keys_might_overlap() and returns: len