程序不会将真实答案与玩家答案进行比较

Question

当我运行程序时，我会输入正确答案，但它总是将其标记为错误：

(10, '+', 2)
12
...
错误答案，答案是 12 ！

这是错误的代码部分：

Player_answer = input()
print ("...")
time.sleep (0.5)

if operation==("+"): #check answer
    answer = num1+num2  #This works out the real answer

    if Player_answer == answer:  #This works out if the player is correct
        print("That's the correct answer")
        score = score + 1
    else:
        print("Wrong answer, the answer was",answer,"!")

if operation==("*"):
    answer = num1*num2

    if Player_answer == answer:
        print("That's the correct answer")
        score = score + 1
    else:
        print("Wrong answer, the answer was",answer,"!")

elif operation==("-"):
    answer = num1-num2

    if Player_answer == answer:
        print("That's the correct answer")
        score = score + 1
    else:
        print("Wrong answer, the answer was",answer,"!")

Answer 1

默认情况下，input() 返回一个字符串。因此，即使您输入 12，Player_input 也是 "12"（一个字符串）。要使Player_input 成为integer，只需键入Player_input = int(Player_input)。 int() 函数接受任何数据值，并尝试将其转换为整数。但是，如果它无法转换，例如尝试转换"not num"，它会引发ValueError。为了防止这种情况，您可以将其包装在try/except 语句中。