def test(self):
     self.assertEqual(iter_power(2, 2), 4)
 def test(self):
     self.assertEqual(iter_power(2.5, 5), 97.65625)
 def test(self):
     self.assertEqual(iter_power(2.5, 1), 2.5)
 def test(self):
     self.assertEqual(iter_power(3, 3), 27)