Python'if'语句

Question

我正在做一项我需要进行测验的作业。到目前为止，这是我的代码的一部分。

answer = input("Your answer: ")
guessesTaken = 0
points = 0
if answer == 'Call Of Duty' or answer == 'Call of duty' or answer == 'Call of duty' or answer == 'a)' or answer == 'call of duty' or answer == 'a':
    print("You are correct!")
    points = points + 2
    print("You scored two points!")
else: 
    guessesTaken = guessesTaken + 1
    print("Incorrect!")
    print("You have", guessesTaken, "guess remaining!")
answerb = input("Your answer: ")
if answerb == 'Call Of Duty' or answerb == 'Call of duty' or answerb == 'Call of duty' or answerb == 'a)' or answerb == 'call of duty' or answerb == 'a':
    points = points + 1
    print("You scored one point!")

我收到错误，如果answerb。我无法弄清楚为什么我会收到此错误。这部分代码旨在为您正确的每个问题评分。积分系统如下，2为第一次尝试的正确答案，第二次尝试为1，第三次尝试为0。我以为使用answerb会让我再试一次并给出1分。如果你能解释给我，所以我将来不再这样做了。 ：）

Answer 1

像minitech建议的那样，你可能只是将answerb = input(...)缩进了太多。 我稍微修改了你的代码：

maxGuesses = 2 #Max number of attempts for the problem
guessesTaken = 0
points = 0
while guessesTaken<maxGuesses:
    answer = input("Your answer: ")
    if answer.lower() == 'call of duty' or answer.lower() == 'a' or answer.lower() == 'a)':
        print("You are correct!")
        points = points + maxGuesses-guessesTaken
        print("You scored %d points!" %(maxGuesses-guessesTaken))
        break
    else:
        print("Incorrect")
        print("You have %d guesses remaining!" %(maxGuesses-guessesTaken-1))
        guessesTaken += 1

Answer 2

评论中的错误表明您正在检查尚未设置的变量。帖子中的匹配行显示为13.在第12行中，您似乎正在设置变量。也许尝试将帖子粘贴回编辑器并重试。发布的代码似乎是在尝试正确访问变量之前设置变量。