code: def test_conditional_in_except_in_conditional(self):
      def test_fn(a, b):
          a = []
          if b:
              # fmt: off
                  try:
                      pass
                  except TestException as e:  # pylint:disable=undefined-variable,unused-variable # noqa: F821,F841,E501
                      if b:
                          a = []
          # fmt: on
          return a
  
      node = self._parse_and_analyze(test_fn)
      fn_body = node.body
  
      self.assertHasDefinedIn(fn_body[1], ("a", "b"))
      self.assertHasDefinedIn(fn_body[1].body[0], ("a", "b"))
      # Note: `TestException` and `e` are not tracked.
      self.assertHasDefinedIn(
          fn_body[1].body[0].handlers[0].body[0], ("a", "b")
      )
  
imports: import unittest
  from nvidia.dali._autograph.pyct import anno
  from nvidia.dali._autograph.pyct import cfg
  from nvidia.dali._autograph.pyct import naming
  from nvidia.dali._autograph.pyct import parser
  from nvidia.dali._autograph.pyct import qual_names
  from nvidia.dali._autograph.pyct import transformer
  from nvidia.dali._autograph.pyct.static_analysis import activity
  from nvidia.dali._autograph.pyct.static_analysis import reaching_definitions
label_desc: Use image node_id 4 for calling the ReachingDefinitionsAnalyzerTest obj's underlying member method code with example usage: obj.test_conditional_in_except_in_conditional() and returns: a