def test_1(self):
     self.assertEqual(arithmeticSequence('123'), True)
 def test_9(self):
     self.assertEqual(arithmeticSequence('13579'), True)
 def test_6(self):
     self.assertEqual(arithmeticSequence('050'), False)
 def test_5(self):
     self.assertEqual(arithmeticSequence('048'), True)
 def test_4(self):
     self.assertEqual(arithmeticSequence('159'), True)
 def test_3(self):
     self.assertEqual(arithmeticSequence('147'), True)