Question

我希望用户输入一个介于1000到25000之间的整数，但是我不希望用户输入一个通过25000的整数，同时希望用户无需重新启动程序即可再次尝试输入它。

while True:
    try:
        loan_amount= int(input("How much do you want to borrow?(1000-25000)"))
    except ValueError:
        print("Sorry, I didn't understand that.")
        continue
    else:
        break
if loan_amount > 25000:
    print("Sorry, We only lend up to $25,000. Please try again!")

我希望当用户输入一个大于25,000的整数时，他们会被告知“我们不能再提供那么多的尝试”，然后再次重复该问题。

Answer 1

您应该尝试在try语句中将if else语句包含在break语句中，以在输入正确的数量时退出while循环。

while True:
    try:
        loan_amount= int(input("How much do you want to borrow?(1000-25000) "))
        if loan_amount > 25000:
            print("Sorry, We only lend up to $25,000. Please try again!")
        else:
            print ("Amount loaned")
            break
    except ValueError:
        print("Sorry, I didn't understand that. Please try again")

输出

尝试1

How much do you want to borrow?(1000-25000) 24999
Amount loaned

尝试2

How much do you want to borrow?(1000-25000) Donald Trump
Sorry, I didn't understand that. Please try again
How much do you want to borrow?(1000-25000) 23000
Amount loaned

尝试3

How much do you want to borrow?(1000-25000) 27000
Sorry, We only lend up to $25,000. Please try again!
How much do you want to borrow?(1000-25000) 23000
Amount loaned

如何限制用户整数输入？

1 个答案: