python - 更改 while() 循环内的操作顺序

Question

我是 python 新手，目前正在上课，我的程序如下所示:

if choice=="1":
    def addition():
        print("You are doing addition. X+Y=Z")
        X = int(input("Enter X:"))
        Y = int(input("Enter Y:"))
        sum = X + Y
        print ("your total is:")
        print (sum)


    Well = "y"
    while Well == "y":
        again = input("Would you like to go again? (y/n)")
        if again == "y":
            addition()
        if again == "n":
            project()
        else:
            print("sorry re-enter choice")

在显示实际添加部分之前，它询问我是否要再去一次。我该如何解决？感谢您的帮助:)

Answer 1

有很多方法，但您可以像这样将 addition() 函数放在顶部:

Well = "y"
while Well == "y":
    addition()
    again = input("Would you like to go again? (y/n)")
    if again == "n":
        project()
    if again not in ("n", "y"):
        print("sorry re-enter choice")