程序不接受任何用户输入

Question

我试图让这个程序接受 1 到 1000 之间的数字。我错过了什么？

def main ( ):
    getGuestCnt ( )
def getGuestCnt ( ):
    guests = input("Please enter the number of guests: ")
    while guests != isValidGuest ( guests ):
        print ("Invalid! Enter only positive whole numbers.")
        guests = input ("Please enter the number of guests: ")
    return int(guests)
def isValidGuest ( guests ):
    return ((str(guests).isdigit()) and (int(guests) >= 0 and int(guests) <= 1000 ))
main ( )

Answer 1

isValidGuest返回一个布尔表达式 - 你不应该将其与输入的数字进行比较，只需检查它是True还是False：

while not isValidGuest ( guests ):
    print ("Invalid! Enter only positive whole numbers.")
    guests = input ("Please enter the number of guests: ")

Answer 2

在您的 while 条件下，您将客人变量与测试进行比较。你真正要做的是：

...
while not isValidGuest(guests):
    ...