11             def adder(y):  function
13             return adder
25                 def adder(y):  function
27                 return adder
39             def adder(y):  function
42             return adder
55                     def adder(y):  function
57                     return adder
62         adder = make_adder4()
63         self.assertEqual(adder(1), 2)
66         self.assertEqual(adder(-2), 8)
86             def adder(y):  function
89             return adder