Python条件判断语句异常：输入正确答案仍返回‘wrong’

你的代码问题出在数据类型不匹配：input()函数获取的用户输入默认是字符串类型，而answer = 2 * 10得到的是整数类型。字符串"20"和整数20在Python中属于不同类型，直接用==比较会返回False，所以哪怕输入正确答案，也会触发wrong的输出。

修正方法有两种： #

• 方法1：将用户输入转换为整数类型

print("what is 2 x 10")
answer = 2 * 10
user_answer = int(input("answer: "))  # 转换为整数

if answer == user_answer:
    print("correct")
else:
    print("wrong")
    print(f"the answer was {answer}")

• 方法2：将正确答案转换为字符串类型

print("what is 2 x 10")
answer = str(2 * 10)  # 转换为字符串
user_answer = input("answer: ")

if answer == user_answer:
    print("correct")
else:
    print("wrong")
    print(f"the answer was {answer}")

如果需要处理用户输入非数字的情况，可以添加异常捕获：

print("what is 2 x 10")
answer = 2 * 10
try:
    user_answer = int(input("answer: "))
    if answer == user_answer:
        print("correct")
    else:
        print("wrong")
        print(f"the answer was {answer}")
except ValueError:
    print("请输入有效的数字答案")

内容的提问来源于stack exchange，提问作者James Lourens