I have to create a store receipt in Python 3.4.1. It has to allow unlimited input of items, show subtotal, tax, and total. Please help.

Question

This is what I have and it doesn't work:

 

print("===============================================================================")
print(" Publix")
print("===============================================================================")


price=int( input("Enter amount for item: "))

while (True):
price=input()
if (price==-1):
break
else:
print("price $", price)






print("===============================================================================")


print("===============================================================================")


subtotal=(price)
print("Subtotal $", subtotal)

tax=int(subtotal * 0.070)
print("Tax $", tax)

total=int(subtotal + tax)
print("Total $", total)



## tax=int(subtotal+ 0.065)
## total=int(subtotal + tax)

print("=============================================================================")
print (" Publix Receipt")
print("=============================================================================")

print(" Thank you for your business!")

print
w.pack()

Answer 1

print("=======================================================================")

print(" Publix")

print("=======================================================================")

finished = False

TAX_RATE = 0.070

item_no = 0

subtotal = 0.0

tax = 0.0

total = 0.0

while (not finished):

prompt = "Enter amount for item #" + str(item_no + 1) + ": $"

price = float(input(prompt))

if (price == -1):

finished = True

else:

subtotal += price

item_no += 1

print("\tprice entered: ${:.2f}".format(price))

tax = subtotal * TAX_RATE

total = subtotal + tax

print("=======================================================================")

print("TOTAL ITEMS purchased: {:d}".format(item_no))

print("SUBTOTAL: ${:.2f}".format(subtotal))

print("TAX: ${:.2f}".format(tax))

print("TOTAL: ${:.2f}".format(total))

print("=======================================================================")

print (" Publix Receipt")

print("=======================================================================")

print(" Thank you for your business!")

# EXAMPLE OUTPUT (resize window horizontally to maximum to see output clearly)

=======================================================================

Publix

=======================================================================

Enter amount for item #1: $2

price entered: $2.00

Enter amount for item #2: $3

price entered: $3.00

Enter amount for item #3: $4

price entered: $4.00

Enter amount for item #4: $2.5

price entered: $2.50

Enter amount for item #5: $-1

=======================================================================

TOTAL ITEMS purchased: 4

SUBTOTAL: $11.50

TAX: $0.81

TOTAL: $12.30

=======================================================================

Publix Receipt

=======================================================================

Thank you for your business!