Python发生异常时如何重新运行循环？

Question

执行此操作时，它仅运行初始 if elif 语句。 如果我达到 0，它会在我减去数字时返回正确的打印语句。 但是，如果我尝试减去以达到负数并因此达到异常，它不会打印下面的语句并像我想要的那样重新循环。

number = 15
print("Subtract the number", number, "until it has reached 0")
while number != 0:
    try:
        x = int(input())
        number = number-x
        if number > 0:
            print("You have", number, "points to spend!")
        elif number == 0:
            print("You have used all your points!")
            break
    except number < 0:
            print("You don't have enough points for that!")
            continue

Answer 1

except用于捕获错误。 你要这个：

while number != 0:
    x = int(input())
    if number - x > 0:
        number -= x
        print("You have", number, "points to spend!")
    elif number == x:
        number = 0
        print("You have used all your points!")
        break
    else:
        print("You don't have enough points for that!")