1.importdoctest
参考https://blog.csdn.net/damotiansheng/article/details/44282691
2.classTestStatisticalFunctions(unittest.TestCase):
self.assertEqual(average([20,30,70]),40.0)
self.assertEqual(round(average([1,5,7]),1),4.3)
withself.assertRaises(ZeroDivisionError):
average([])
self.assertRaises(ZeroDivisionError,average([]))
withself.assertRaises(TypeError):
average(20,30,70)
self.assertRaises(TypeError,average(20, 30, 70))