Question

我正在制作一个程序，用户需要输入2个数字（负数或正数），第二个数字必须比第一个数字大至少2个。有没有办法确保用户输入。我已经拥有它所以只有一个数字，但有一种方法可以同时做两个。这是我的代码：

while True:
    try:
        lowest_num = int(input("What would you like the lowest possible number to be?"))
        break
    except ValueError:
        print("Please only enter a number.  Try again... ")

while True:
    try:
        highest_num = int(input("What would you like the highest possible number to be?"))
        break
    except ValueError:
        print("Please only enter a number and a number that is bigger than the previous number.  Try again...")

我需要这样的东西与“highest_num循环”在同一个循环中：

while highest_num <= (lowest_num + 1):
    highest_num = input("Please only enter a number and a number that is bigger than the previous number.")

有办法吗？提前谢谢。

Answer 1

好的，我在while内添加了一个新的try循环，如下所示：

while True:
    try:
        highest_num = int(input("What would you like the highest possible number to be?"))
        while highest_num <= (lowest_num + 1):
            highest_num = int(input("Please only enter a number and a number that is bigger than the previous number."))
        break
    except ValueError:
        print("Please only enter a number and a number that is bigger than the previous number.  Try again...")

我很确定这有效！

提示用户，直到他们给出的数字不是字符串，而且数字大于输入的前一个数字

1 个答案: