Please help with this I attached a pic of what I have tried to come up with. I'll give more point !! You have been asked to write a program that calculates the total price for a picnic lunch that the user is purchasing for a group of friends. Your program should:
• Ask the user to enter her budget for the lunch • The user has the option of buying apples, cheese, and bread.
• Set the price per apple, price per pound of cheese, and price per loaf of bread as constant variables.
• Use a nested repetition/selection structure to ask the user what type of item and how much of each item he/she would like to purchase. Keep a running total of the items purchased inside the loop.
• Exit the loop if the total has exceeded the user's budget. Additionally, provide a sentinel value that allows the user to exit the purchasing loop at any time. • After the loop is exited, display the total amount spent, the total amount of each item purchased (quantity and cost) and the amount of the budget that remains. .
Be sure to include appropriate documentation at the start of the program and within the program.
You will submit your .py file for this part of the test as a response to this question.

The program prompts user for his/her budget, items and quantity to be purchased and creates and invoice based on the input. The program written in python 3 goes thus :

budget = int(input('Enter your lunch budget : '))

# prompt for user's budgeted amount

price_inv = {'apple' : 3 , 'cheese' : 4 , 'bread' : 5 }

#dictionary for the price of items

cost_inv = {'apple' : 0 , 'cheese' : 0 , 'bread' : 0 }

#dictionary for the price of each items purchased

quantity = {'apple' : 0 , 'cheese' : 0 , 'bread' : 0 }

#quantity of each item purchased

total_sum = 0

#initialized value for the total sum

budget_left = budget

#initialized value for the amount left from user's budget.

while budget > 0 :

#a while loop which runs till budget is finished

item_type = input('enter the item to purchase : ')

if item_type == 'nothing_more' :

break

#allow user to break out of the loop before the condition is met

else :

units = int(input('units : '))

#prompts for the unit of items the user want

cost = units * price_inv[item_type]

#calculates the cost

cost_inv[item_type] += cost

#updates the cost dictionary

quantity[item_type] += units

#updates the number of units purchased

total_sum += cost

#updates the total cost

budget_left -=cost

#updates the budget left

budget -= cost

print('number of apples : ', quantity['apple'], 'Cost : ', cost_inv['apple'])

print('number of cheese : ', quantity['cheese'], 'Cost : ', cost_inv['cheese'])

print('number of bread : ', quantity['bread'], 'Cost : ', cost_inv['bread'])

print('Total cost : ', total_sum)

print('Budget left : ', budget_left)

#displays user's purchase information as an invoice

A sample run of the program is attached including the script.

Learn more :link

In python:

budget = float(input("What is your budget? $"))

apple_price = (whatever value you choose)

cheese_price = (whatever value you choose)

bread_price = (whatever value you choose)

apple_quantity = 0

cheese_quantity = 0

bread_quantity = 0

total = 0

# Finished initializing each variable.

# The loop stops when the budget is less than or equal to zero. Hopefully at zero though.

while budget > 0:

   what_type = input("What type of item would you like? (a/c/b) ")

   if what_type == "a":

       apple_quantity = int(input("How many apples would you like? "))

       if apple_quantity * apple_price > budget:

           print(f"You can't afford {apple_quantity} apples")

           apple_quantity = 0

           # If the price of apples exceeds what is available in the budget, we can't buy the apples. This is the same for bread and cheese.

       budget -= (apple_quantity * apple_price)

       total += apple_quantity

       # The budget is modified to include the price of the food purhcased, and the total amount of items purchased is increased if the user can afford the item(s).

   elif what_type == "c":

       cheese_quantity = int(input("How much cheese would you like? "))

       if cheese_quantity * cheese_price > budget:

           print(f"You can't afford {cheese_quantity} pounds of cheese")

           cheese_quantity = 0

       budget -= (cheese_quantity * cheese_price)

       total += cheese_quantity

   elif what_type == "b":

       bread_quantity = int(input("How much bread would you like? "))

       if bread_quantity * bread_price > budget:

           print(f"You can't afford {bread_quantity} loaves of bread")

           bread_quantity = 0

       budget -= (bread_quantity * bread_price)

       total += bread_quantity

   elif what_type == "exit":

       break

       # This is the sentinel value to exit the purchasing program whenever the user wants.

print(

   f"The total amount spent: ${((bread_quantity * bread_price) + (cheese_quantity * cheese_price) + (apple_quantity * apple_price))}")

print(

   f"You purchased {apple_quantity} apples worth ${apple_price * apple_quantity}, {bread_quantity} loaves of bread worth ${bread_price * bread_quantity}, and {cheese_quantity} pounds of cheese worth ${cheese_price * cheese_quantity}.")

print(f"You have ${budget} remaining on your budget.")

# The total amount spent, the amount of items and their prices, and the remaining budget is printed to the console.

I hope this helps! If you need any further assistance please comment, and I will do my best to help.

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