Question

我的Python程序不起作用，它需要几天才能完成，我需要让它运行起来。问题是你想再次参加。这是：

n1 = input ("How many bottles would you like?\n")
n = int (n1)
playing = True

while playing:
    while n > 1:
        print (n," green bottles sitting on a wall,")
        print (" ")
        print (n," green bottles sitting on a wall,")
        print (" ")
        print ("And if one green bottle should accidently fall,")
        print (" ")

        print ("There would be ", n-1," green bottles sitting on a wall")
        print (" ")
        n = n - 1
    print ("1 green bottle, sitting on a wall,")
    print (" ")
    print ("1 green bottle, sitting on a wall,")
    print (" ")
    print ("And if one green bottle should accidently fall,")
    print (" ")
    print ("There would be no green bottles sitting on a wall")

    again = input ("Would you like to go again?")
    if again == "yes" or "Yes":
        n1 = input ("How many bottles would you like then?")
        n = int (n1)
    if again == "no" or "No":
        playing = False

问题在于，当它问我是否想再去时，它会说＆＃34;那么你想要多少瓶？＆＃34;即使我把＆＃34;没有＆＃34;作为答案。我想知道如何修复它，以便当我进入＆＃34; no＆＃34;我也想知道它是如何完成的。

Answer 1

问题在于：

if again == "yes" or "Yes":

这应该改为

if again == "yes" or again == "Yes":

会发生什么？ Python首先评估again == "yes"，然后仅评估术语"Yes"。后者将始终为true，因为其值不是0（因此，Python自动true

同样适用于

if again == "no" or "No":

始终将评估为true。

Python - 你想再次使用功能吗？

1 个答案: