code: def test_complexdict(self):
      def fn(a: Dict[complex, complex], key: complex) -> complex:
          return a[key]
  
      input = {2 + 3j: 2 - 3j, -4.3 - 2j: 3j}
      self.checkScript(fn, (input, -4.3 - 2j))
  
imports: import torch
  import os
  import sys
  from torch.testing._internal.jit_utils import JitTestCase, execWrapper
  from torch.testing._internal.common_utils import IS_MACOS
  from typing import List, Dict
  from itertools import product
  from textwrap import dedent
  import cmath
label_desc: Use image node_id 3 for calling the TestComplex obj's underlying member method code with example usage: obj.test_complexdict() and returns: a