Python正确答案显示为错误

Question

我在看一个问题游戏的代码，从文件中读取答案，但是当我运行它时，它告诉我答案是错误的，即使它是正确的，我打错了还是缺少一些东西文本文件？

for line in lines:
question, rightAnswer = line.strip().split("\t")
answer = input(question + " ")
if answer.lower() == rightAnswer:
    print("Right!")
    numRight = numRight + 1
else:
    print("No, the correct answer is %s" % rightAnswer)

我的文本文件如下：

How many strings does a guitar have?    Six
How many strings does a violin have?    Four
Are mandolin strings in pairs?  Yes

Answer 1

if answer.lower() == rightAnswer为if answer.lower() == rightAnswer.lower()