def test_equal_2(self):
     self.assertEqual(average([5, 25, 50, 75]), 39)
 def test_equal_1(self):
     self.assertEqual(average([5, 78, 52, 900, 1]), 207)
 def test_equal_4(self):
     self.assertEqual(average([1, 1, 1, 1, 9999]), 2001)
 def test_equal_5(self):
     self.assertEqual(average([0]), 0)
 def test_equal_3(self):
     self.assertEqual(average([2]), 2)