Failure
Traceback (most recent call last):
File "C:\Users\Frank\Dropbox\PycharmProjects\Calculator\calculator\test\test_calculator.py", line 15, in test_tokenize
self.assertEqual([ValueToken(Decimal(2)), ValueToken(Decimal(4)), OperatorToken('+')], calculator.tokenize("2 + 4"))
AssertionError: Lists differ: [<cal[50 chars]03709588>, <calculator.calculator.ValueToken o[92 chars]240>] != [<cal[50 chars]037090F0>, <calculator.calculator.ValueToken o[92 chars]CF8>]
First differing element 0: