Question

我对Python还是很陌生，在遇到除法问题时遇到了一个奇怪的错误。整个程序较大，但是相关的部分是：

                    problemNumber = 0
                    gamesWon = 0
                    gamesLost = 0
                    gameNumber = 0
                    percentageWon = 0
                    answer = 0.00
                    while problemNumber < 10:
                            numberOne = random.randrange(0,10,1)
                            numberTwo = random.randrange(1,10,1)
                            print("Answer the following question: ", numberOne, program, numberTwo)
                            response = float(input())
                            if program == "+":
                                    answer = numberOne + numberTwo
                            elif program == "-":
                                    answer = numberOne - numberTwo
                            elif program == "x":
                                    answer = numberOne * numberTwo
                            elif program == "/":
                                    answer = float(format(answer, '.2f'))
                                    answer = numberOne / numberTwo
                            elif program == "^":
                                    answer = numberOne ^ numberTwo
                            if response == answer:
                                    print(random.choice(congratulation_Message))
                                    gamesWon = gamesWon + 1
                                    problemNumber = problemNumber + 1
                            else:
                                    print(random.choice(admonishment_Message),"The answer was ", format(answer, '.2f'))
                                    gamesLost = gamesLost + 1
                                    problemNumber = problemNumber + 1

大多数答案都能正确运行，但是当答案与答案相同时，四舍五入到2位的BUT除法问题又会返回为不正确：

Answer the following question:  3 / 2
1.5
Great job!
Answer the following question:  0 / 2
0
Great job!
Answer the following question:  8 / 7
1.14
Incorrecto, my friend.  The answer was  1.14
Answer the following question:  5 / 7
.71
Wrongo.  The answer was  0.71
Answer the following question:  1 / 9
0.11
AAAAH. Wrong.  The answer was  0.11

我认为我的所有内容格式都正确，但是显然有些不正确。

有什么想法吗？

Answer 1

我认为您需要像以前那样将其格式化为2f：

answer = numberOne / numberTwo

因为可能是在比较

0.11和0.11111111

为什么正确答案在Python中显示为不正确？

1 个答案: