Python While 循环程序 CSE答案

【问题标题】：Python While Loop program CSEPython While 循环程序 CSE
【发布时间】：2020-09-28 22:04:28
【问题描述】：

我有一个需要完成的程序，但我不知道如何完成。我需要让它使用一个while循环并询问他们是否想订购，一旦他们完成了他们是否想再次订购，然后返回到主代码块。我一点也不擅长这个。这是我现在所拥有的：（编辑：对截图感到抱歉）

order= input('Hi, would you like to order anything? Yes (y), No (n)')
if order == "n":
    print("Ok have a nice day")
elif order == "y":
    ordering_y = type_of_sandwich = input('What kind of sandwich would you like? Chicken for $5.25 (c), Tofu for $5.75 (t), Beef for $6.25(b)?')
if type_of_sandwich == "c":
  print('You chose the chicken sandwich for $5.25')
elif type_of_sandwich == "t":
  print ('You chose a tofu for $5.75 sandwich')
elif type_of_sandwich == "b":
  print('You chose a beef sandwich for $6.25')
bev = input("Would you like a beverage? Yes (y), No (n)?")
if bev == "n":
    print("Ok, thanks for your business, would you like to order again?")
elif bev == "y":
  size= input('Small for $1.00 (s), Medium for $1.75 (m), Large for $2.25 (l)?')
if size == "s":
        print("You ordered a small beverage for $1.00, would you like to order again?")
elif size == "m":
        print("You ordered a Medium beverage for $1.75, would you like to order again?")
elif size == "l":
        print("You ordered a large beverage for $2.25, would you like to order again?")

order_again= input('Would you like to order again? Yes (y), No (n)')
while true:
    if order_again == "n":
        print("Ok, thanks for your business.")
        break
    elif order_again =="y":
        repeat order

【问题讨论】：

请将您的代码作为文本粘贴到此处，而不是屏幕截图。
欢迎来到 Stack Overflow。为了进一步帮助您，我们需要更多详细信息。请花一些时间阅读How to Ask 和minimal reproducible example，了解如何改进您的问题，以便我们提供您正在寻找的答案。
请不要发布代码、数据或 Tracebacks 的图像。将其复制并粘贴为文本，然后将其格式化为代码（选择它并输入ctrl-k）...Discourage screenshots of code and/or errors
while True: runCode() ... done = input('Are you finished?') ... if done = 'Yes': break.... else: continue ...因此，从您的代码的外观来看，您只需要另一个 while True 循环。

标签： python loops while-loop iteration

【解决方案1】：

您应该在用户输入“n”后添加break。它打破循环并退出while。

【讨论】：

【解决方案2】：

这是你的代码检查它：

def order():
    order= input('Hi, would you like to order anything? Yes (y), No (n)')

    if order == "n":
        print("Ok have a nice day")
        return False
    elif order == "y":
        ordering_y = type_of_sandwich = input('What kind of sandwich would you like? Chicken for $5.25 (c), Tofu for $5.75 (t), Beef for $6.25(b)?')
    if type_of_sandwich == "c":
      print('You chose the chicken sandwich for $5.25')
    elif type_of_sandwich == "t":
      print ('You chose a tofu for $5.75 sandwich')
    elif type_of_sandwich == "b":
      print('You chose a beef sandwich for $6.25')
    bev = input("Would you like a beverage? Yes (y), No (n)?")
    if bev == "n":
        print("Ok, thanks for your business, would you like to order again?")
    elif bev == "y":
      size= input('Small for $1.00 (s), Medium for $1.75 (m), Large for $2.25 (l)?')
    if size == "s":
            print("You ordered a small beverage for $1.00, would you like to order again?")
    elif size == "m":
            print("You ordered a Medium beverage for $1.75, would you like to order again?")
    elif size == "l":
            print("You ordered a large beverage for $2.25, would you like to order again?")
    return True


if __name__ == "__main__":
    if order():
        order_again = input('Would you like to order again? Yes (y), No (n)')
        if order_again == "n":
            print("Ok, thanks for your business.")
        elif order_again =="y":
           order()

【讨论】：

非常感谢，正是我想要的。 :)
将答案按钮设为绿色

【解决方案3】：

谢谢，我不确定我这样做是否正确，但现在它在第 7 行给了我一个语法错误。

while True:
    order= input('Hi, Would you like to order anything? Yes (y), No (n)')
    if order=="n":
        print("ok have a nice day")
        break
    elif order=="y":
 ordering = type_of_sandwich = input('What kind of sandwich would you like? Chicken for $5.25 (c), Tofu for $5.75 (t), Beef for $6.25(b)?')
if type_of_sandwich == "c":
  print('You chose the chicken sandwich for $5.25')
elif type_of_sandwich == "t":
  print ('You chose a tofu for $5.75 sandwich')
elif type_of_sandwich == "b":
  print('You chose a beef sandwich for $6.25')
bev = input("Would you like a beverage? Yes (y), No (n)?")
if bev == "n":
    print("Ok, thanks for your business.")
elif bev == "y":
  size= input('Small for $1.00 (s), Medium for $1.75 (m), Large for $2.25 (l)?')
if size == "s":
        print("You ordered a small beverage for $1.00.")
elif size == "m":
        print("You ordered a Medium beverage for $1.75.")
elif size == "l":
        print("You ordered a large beverage for $2.25.")

【讨论】：

您的代码中有一些非常时髦的缩进。此外，这是答案部分，您填写了答案。您可以评论某人的答案。这个网站的格式不像博客。
对不起，我刚刚注册了我的帐户。我在这方面遇到了很多麻烦（这是一项学校作业）。我会记住这一点。

【解决方案4】：

def get_order():
    ordering_y = type_of_sandwich = input('What kind of sandwich would you like? Chicken for $5.25 (c), Tofu for $5.75 (t), Beef for $6.25(b)?')
    if type_of_sandwich == "c":
            print('You chose the chicken sandwich for $5.25')
    elif type_of_sandwich == "t":
            print ('You chose a tofu for $5.75 sandwich')
    elif type_of_sandwich == "b":
            print('You chose a beef sandwich for $6.25')
    bev = input("Would you like a beverage? Yes (y), No (n)?")
    if bev == "n":
        print("Ok, thanks for your business, would you like to order again?")
    elif bev == "y":
        size= input('Small for $1.00 (s), Medium for $1.75 (m), Large for $2.25 (l)?')
        if size == "s":
            print("You ordered a small beverage for $1.00, would you like to order again?")
        elif size == "m":
            print("You ordered a Medium beverage for $1.75, would you like to order again?")
        elif size == "l":
            print("You ordered a large beverage for $2.25, would you like to order again?")

while True:
    order= input('Hi, would you like to order anything? Yes (y), No (n)')
    if order == "n":
        print("Ok have a nice day")
        break
    elif order == "y":
        get_order()
    order_again= input('Would you like to order again? Yes (y), No (n)')
    if order_again == "n":
        print("Ok, thanks for your business.")
        break
    elif order_again == "y":
        get_order()

【讨论】：

【解决方案5】：

看看这个

def order_sandwich(key=None):
    if not key:
        type = input(
            "What Kind of Sandwich Would you like? \n (c) Chiken for $5.25 \n (t) Tofu for $5.75 \n (b) Beef for $6.25 \n (e) No Thanks \n\n Option: "
        )
        menu_sandwich(type)
    elif key == "e":
        print("Thank you")
    else:
        type = input("Please use specifed option [c, t, b]: ")
        menu_sandwich(type)

def order_beverage(key=None):
    order_drink = input(
        "Would you like a beverage? \n (y) Yes \n (n) No \n\n Option: ")
    if order_drink == "y":
        menu_beverage()
    else:
        order_again = input(
            "Ok Thanks, would you like to order again?\n (y) Yes \n (n) No\n\n Option: "
        )
        if order_again == "y":
            order_sandwich()
        else:
            print("ok have a nice day!")

def menu_sandwich(type=None):
    if type == "c":
        print("Chiken\n")
        order_beverage()
    elif type == "t":
        print("Tofu\n")
        order_beverage()
    elif type == "b":
        print("Beef\n")
        order_beverage()
    else:
        order_sandwich(type)


def menu_beverage(type=None):
    if type == "s":
        print("Small\n")
        main_order()
    elif type == "m":
        print("Medium\n")
        main_order()
    elif type == "l":
        print("Large\n")
        main_order()
    elif type == "e":
        print("ok have a nice day!")
    else:
        type = input(
            " (s) small for $1.00 \n (m) medium for $1.75 \n (l) large for $2.25 \n (e) No Thanks \n\n Option: "
        )
        menu_beverage(type)


def main_order():
  order = input("Hi, would you like to order anything? \n (y) Yes \n (n) No \n\n Options: ")
  if order == "y":
    order_sandwich()
  else:
    print("ok have a nice day!")


main_order()

【讨论】：