Question

目标： 在用户输入是否要添加另一个新项目之后，我希望代码从newItem输入行重新开始，这样我就不必只继续if火车了，最终给它加了一个盖子。

下面列出的是我到目前为止编写的代码。

shopping_cart_menu = [] 
shopping_cart_prices = []

print("Welcome to the shopping cart program. Please select an option from the menu below.")
print("*******************")
print("01: Add a new Item")
print("02: Display Cart contents")
print("03: Remove Item")
print("04: Compute Total")
print("05: Quit")
print("*******************")

menuAnswer = input(" ")

if menuAnswer == "01":
    newItem = input("What item would you like to add? ")
    shopping_cart_menu.append({newItem})
    followUp = input("Would you like to add another item? Y/N: ")
          if answer = "Y"

Answer 1

使用while循环将允许您循环if语句。 “ followup = followup.upper（）”行也将大写输入。

shopping_cart_menu = [] 
shopping_cart_prices = []

print("Welcome to the shopping cart program. Please select an option from the menu below.")
print("*******************")
print("01: Add a new Item")
print("02: Display Cart contents")
print("03: Remove Item")
print("04: Compute Total")
print("05: Quit")
print("*******************")

menuAnswer = input(" ")

if menuAnswer == "01":
    followup = "Y"
    while followup == "Y":
        newItem = input("What item would you like to add? ")
        shopping_cart_menu.append({newItem})
        followup = input("Would you like to add another item? Y/N: ")
        followup = followup.upper()

Answer 2

以下是使用while循环的方法：

menuAnswer = input(" ")

if menuAnswer == "01":
    while True:
        newItem = input("What item would you like to add? ")
        shopping_cart_menu.append({newItem})
        followUp = input("Would you like to add another item? Y/N: ")
        if answer != "Y":                          
            break

有没有办法循环一组if语句？

2 个答案: