Question

我需要一些帮助来启动和停止此购物清单中的循环。我需要能够选择一些项目添加总计和税，然后给用户选择结束。我已经将存款或税款单独列入实际支票。然后你会在最后得到一个总计。如果您发现任何其他错误，请随时告诉我们。谢谢

#Welcome user to user display product and prices
print("Hello, welcome to the store")
print("This is the list & products")
print("0,Milk,$2.39/Gallon")
print("2,Eggs,$1.58/per dozen")
print("4,Water,$1.00/Bottle+$.05 deposit")
print("6,Soda,$.99/Can+$.05 deposit")
print("8,Bread,$2.99/Loaf")
print("10,Chips,$1.30/Bag")
print("12,Tomato,$1.99/Pound")
print("Ready-food box,$8.99/Box+$.0625 tax")

#Prompt users for his product
totalpurchase=0
wdeposit=.05
sdeposit=.05
rtax=.0625
gtotal=0
totwdeposit=0
totsdeposit=0
totrtax=0
while 0:
    choice=int(input("Enter your product code"))
if choice==0:
           qofmilk=int(input("How many gallons do you wish to purchase?"))
           totmilk=qofmilk*2.39
           print("Your total price for milk is", totmilk)
           totalpurchase=totalpurchase+totmilk
if choice==2:
            qofeggs=int(input("How many dozen of eggs do you wish to purchase?"))
            toteggs=qofeggs*1.58
            print("Your total price for eggs is", toteggs)
            totalpurchase=totalpurchase+toteggs
if choice==4:
            qofwater=int(input("How many bottles of water do you wish to purchase?"))
            totwater=qofwater*1.00
            print("Your total price for water is", totwater)
            totalpurchase=totalpurchase+totwater
if choice==6:
            qofsoda=int(input("How many cans of soda do you wish to purchase?"))
            totsoda=qofsoda*.99
            print("Your total price for soda is", totsoda)
            totalpurchase=totalpurchase+totsoda
if choice==8:
            qofbread=int(input("How many loafs of bread do you wish to purchase?"))
            totbread=qofbread*2.99
            print("Your total price for bread is", totbread)
            totalpurchase=totalpurchase+totbread
if choice==10:
            qofchips=int(input("How many bags of chips do you wish to purchase?"))
            totchips=qofchips*1.30
            print("Your total price for chips is", totchips)
            totalpurchase=totalpurchase+totchips
if choice==12:
            qoftomato=int(input("How many pounds of tomatoes do you wish to purchase?"))
            tottomato=qoftomato*1.99
            print ("Your total price for tomatoes is", tottomato)
            totalpurchase=totalpurchase+tottomato
if choice==14:
            qofchicken=int(input("How man pounds of chicken do you wish to purchase?"))
            totchicken=qofchicken*2.99
            print("Your total price for chicken is", totchicken)
            totalpurchase=totalpurchase+totchicken
if choice==16:
            qofready=int(input("How many boxes of ready-food boxes do you wish to purchase?"))
            totready=qofready*8.99
            print("Your total price for ready-food boxes is", qofready)
            totalpurchase=totalpurchase+totready
print(totalpurchase)
if choice==4:
            wdeposit=wdeposit*1
            totwdeposit=wdeposit*qofwater
            print("deposit", totwdeposit)
if choice==6:
            sdeposit=sdeposit*1
            totsdeposit=sdeposit*qofsoda
            print("deposit", totsdeposit)
if choice==16:
            rtax=rtax*1
            totrtax=rtax*qofready
            print("tax", totrtax)
gtotal=totalpurchase+totwdeposit+totsdeposit+totrtax
print("Your grand total is", gtotal)

while 1:
    action=input("press any key if you like to purchase otherwise type end to finish")
    if action=="end":
        break

Answer 1

我会设置一个变量来结束循环，当用户想要停止添加项目时，然后将变量设置为其他内容。

done = false
while done:
    if choice == 0: 
        ...
        (prompt user to continue)
        if user is done:
            done = true

在python中循环启动和停止

1 个答案: