冒号语法无效

Question

我正在写一个程序，包括速度限制之类的while和if语句。我试着让它在输出结果后，它问我是否想用while循环重做程序

我听说如果我有一个太多的括号或一个开放的括号会发生这种情况。我所有的支架都很好

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

但我现在

"invalid syntax" with the colon behind: [ dasques = input('Do you want to try again? y/n '):]

以红色突出显示

Answer 1

请更改以下代码行

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

Answer 2

试试这个

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