code: def test_builtin_getitem(self):
      # builtin getitem args[0] is python list and args[1] is unspec
      def fn(x, idx):
          return (torch.zeros(idx), x[idx], x[idx:])
  
      x = list(range(50))
      ref = fn(x, 48)  # 48 is unspecialized
      cnts = torch._dynamo.testing.CompileCounter()
      opt_fn = torch._dynamo.optimize(cnts)(fn)
      res = opt_fn(x, 48)
      self.assertTrue(same(ref, res))
  
imports: import math
  import random
  import unittest
  import numpy
  import torch
  import torch._dynamo.test_case
  import torch._dynamo.testing
  import torch.nn.functional
  from torch._dynamo.comptime import comptime
  from torch._dynamo.testing import CompileCounter, same
label_desc: Use image node_id 9 for calling the UnspecTests obj's underlying member method code with example usage: obj.test_builtin_getitem() and returns: torch,  x,  x