Question

我正在编写一个包含速度限制和while和if语句的程序。我尝试使用它，以便在输出结果后询问是否要使用while循环重做该程序。

听说如果我有一个太多的括号或一个开放的括号，就会发生这种情况。我所有的括号都没问题。

ques1 = int(input('What speed is the car travelling? '))
check = ques1

running = True
while running == True:
    if 0 <= check <= 50:
        print('You are clear.')

    if 51 <= check <= 60:
        print('10 demerit points')

    if 61 <= check <= 70:
        print('20 demerit points')

    if 71 <= check <= 80:
        print('30 demerit points')

    if 81 <= check <= 90:
        print('50 demerit points')

    if 91 <= check <= 1000:
        print("100 demerit points")


    dasques = input('Do you want to try again? y/n '):
        if dasques == ('n'):
            running = False

预期输出：

Hoping to get :
50 demerit points
Do you want to try again? y/n

但是我得到

“无效语法”，后跟冒号： [dasques = input（'您要重试吗？是/否'）：]

以红色突出显示。

Answer 1

尝试一下

dasques = input('Do you want to try again? : y/n  ') # you can keep ':' inside the string
if dasques == ('n'):
    running = False

Answer 2

请在下面的代码行中更改

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冒号语法无效

2 个答案: