code: def test_lambda(self):
      b = 2
      f = lambda x: (b + (x if x > 0 else -x))
  
      tr = TestTranspiler()
      f, _, _ = tr.transform(f, None)
  
      self.assertEqual(f(1), 2 - 1)
      self.assertEqual(f(-1), 2 - 1)
  
      b = 3
  
      self.assertEqual(f(1), 3 - 1)
      self.assertEqual(f(-1), 3 - 1)
  
imports: import threading
  import gast
  from tensorflow.python.autograph.pyct import transformer
  from tensorflow.python.autograph.pyct import transpiler
  from tensorflow.python.platform import test
label_desc: Use image node_id 6 for calling the PyToPyTest obj's underlying member method code with example usage: obj.test_lambda() without return types