Question

Python 3 Question:

All I need is for someone to edit the program with comments that explains what the program is doing (for the entire program)

def main():
    developerInfo() #i left this part out 
    retail = Retail_Item()
    test = Cash_Register()
    test.data(retail.get_item_number(), retail.get_description(),
              retail.get_unit_in_inventory(), retail.get_price())
    answer = 'n'

    while answer == 'n' or answer == 'N':
        test.Menu()
        print()
        print()
        Number = int(input("Enter the menu number of the item "
                           "you would like to purchase: "))
        if Number == 8:
            test.show_items()
        else:
            test.purchase_item(Number)
        answer = input("Are you ready to check out ?")
        x = 1
        while x == 1:
            if answer == 'y' or answer == 'n':
                x = 0
            else:
                print("Invalid input!")
                answer = input("Are you ready to check out ?")

    else:
        test.get_total()
        test.clear()


class Retail_Item:

    def __init__(self):
        self.__item_number = [1000, 2000, 3000, 4000, 5000, 6000, 7000]
        self.__description = ['Pants', 'Jeans', 'Shirt', 'Dress', 'Socks', 'Sweater', 'Jacket']
        self.__unit_in_inventory = [10, 2, 15, 3, 50, 5, 1]
        self.__price = [19.99, 25.95, 12.50, 79.00, 1.98, 49.99, 85.95]

    def get_item_number(self):
        return self.__item_number

    def get_description(self):
        return self.__description

    def get_unit_in_inventory(self):
        return self.__unit_in_inventory

    def get_price(self):
        return self.__price


class Cash_Register:

    def __init__(self):
        self.__item_number_list = []
        self.__description_list = []
        self.__unit_list = []
        self.__price = []
        self.__total_item_number = []
        self.__total_des = []
        self.__total_price = []
        self.__sub_total = 0

    def data(self, list1, list2, list3, list4):
        self.__item_number_list = list1
        self.__description_list = list2
        self.__unit_list = list3
        self.__price = list4

    def Menu(self):
        print("Items available for Purchase:")
        print("1. Pants")
        print("2. Jeans")
        print("3. Shirt")
        print("4. Dress")
        print("5. Socks")
        print("6. Sweater")
        print("7. Jacket")
        print("8. Show Inventory")

    def purchase_item(self, Number):
        self.__total_item_number.append(self.__item_number_list[Number - 1])
        self.__total_des.append(self.__description_list[Number - 1])
        self.__total_price.append(self.__price[Number - 1])
        if self.__unit_list[Number - 1] - 1 >= 0:
            self.__unit_list[Number - 1] = self.__unit_list[Number - 1] - 1
        else:
            print("The item is out of stock")

    def show_items(self):
        print('Item Number', '{:>18}'.format('Description'),
              '{:>24}'.format('Units in inventory'),
              '{:>11}'.format('Price'))
        for a in range(0, 7):
            print('   ', '{:<17}'.format(self.__item_number_list[a]),
                  '{:<20}'.format(self.__description_list[a]),
                  '{:<15}'.format(self.__unit_list[a]),
                  '{:>8}'.format(format(self.__price[a], '.2f')))

    def get_total(self):
        print('Item Number', '{:>18}'.format('Description'), '{:>19}'.format('Price'))
        for a in range(0, len(self.__total_item_number)):
            print('   ', '{:<17}'.format(self.__total_item_number[a]),
                  '{:<18}'.format(self.__total_des[a]),
                  '{:>9}'.format(format(self.__total_price[a], '.2f')))
        print()
        print()
        self.__sub_total = sum(self.__total_price)
        tax = self.__sub_total * 0.0825
        total_price = self.__sub_total * 1.0825
        print('{:<12}'.format('Sub Total:'),
              '{:>10}'.format(format(self.__sub_total, '.2f')))
        print('{:<12}'.format('Tax:'),
              '{:>10}'.format(format(tax, '.2f')))
        print('{:<12}'.format('Total Price:'),
              '{:>10}'.format(format(total_price, '.2f')))

    def clear(self):
        self.__total_item_number = []
        self.__total_des = []
        self.__total_price = []
        input('Press any key to continue')

main()

Answer 1

Answer

I have included the screenshot of the code with comments

def main(): developerInfo() #i left this part out retail = Retail_Item() # a Retail_Item object is created test = Cash_Register() # a Cash_Register object is created #item number list, Description List, unit list and price are initialized to test object using its data() #these values are returned from the different accessor methods of retail object test.data(retail.get_item_number(), retail.get_description(), retail.get_unit_in_inventory(), retail.get_price()) answer = 'n' #initially answer is set as n 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 while answer == 'n' or answer == 'N': #this while Loop will work until the answer is 'y' test. Menu() #calling Menu method which shows items available for purchase #Leaving two lines print() print() Number = int(input("Enter the menu number of the item" "you would like to purchase: ")) #recieving user input for menu number if Number == 8: test.show_items() #show Inventory items else: test.purchase_item(Number) #purchasing the item answer = input("Are you ready to check out ?") #taking user input X = 1 while x == 1: #validating input whether it is not other than character 'y' or 'n' if answer == 'y' or answer == 'n': x = 0 else: #if it is any other character then it ask the user to enter the input again print("Invalid input!") answer = input("Are you ready to check out ?") else: #if the user want to check out test.get_total() #print total amount details test.clear() #clearing all input list

36 37 38 class Retail_Item: #Retail_Item item class 39 40 def _init__(self): #constructor 41 #initializing its data members as list 42 self._item_number = [1000, 2000, 3000, 4000, 5000, 6000, 7000] 43 self. _description = ['Pants', 'Jeans', 'Shirt', 'Dress', 'Socks', 'Sweater', 'Jacket'] 44 self._unit_in_inventory [10, 2, 15, 3, 50, 5, 1] 45 self._price = [19.99, 25.95, 12.50, 79.00, 1.98, 49.99, 85.95] 46 47 #acessor methods 48 def get_item_number(self): 49 return self._item_number 50 51 def get_description(self): 52 return self. _description 53 54 def get_unit_in_inventory(self): 55 return self._unit_in_inventory 56 57 - def get_price(self): 58 return self._price 59 60 61 class Cash_Register: #class Cash_Register 62 63 def init__(self): #constructor 64 #initializing its all members with empty list 65 self._item_number_list = [] 66 self._description_list = [] 67 self. _unit_list = [] 68 self. __price = [] 69 self. __total_item_number []

self._total_des = [] self._total_price = [] #__sub_total is initialized with value o self. __sub_total = 0 def data(self, listi, list2, list3, list4): #data method for setting the values to the members #it takes these member values as parameter and assign it self._item_number_list = listi self. _description_list = list2 self. _unit_list list3 self._price = list4 70 71 72 73 74 75 76 77 78 79 80 81 82 - 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 def Menu(self): #Menu method to show the menu to the user print("Items available for purchase:") print("1. Pants") print("2. Jeans") print("3. Shirt") print("4. Dress") print("5. Socks") print("6. Sweater") print("7. Jacket") print("8. Show Inventory") def purchase_item(self, Number): #method for purchasing the item #adding the purchasing item details to corresponding lists self. total_item_number.append(self._item_number_list[Number - 1]) self._total_des.append(self. _description_list[Number 1]) self. total_price.append(self._price[Number - 1]) if self. _unit_list[Number 1] - 1 >= 0: #checking whether the item is available more than 1 self._unit_list[Number - 1] = self._unit_list[Number 1] - 1 else: #else printing out of stock print("The item is out of stock")

def show_items(self): #method to show items #it will print Item Number, Description, Units in inventory, Price as heading print('Item Number', '{:>18}'.format("Description'), '{:>24}',format('Units in inventory'), '{:>11}'.format('Price')) for a in range(e, 7): #print each item details print(' ', '{:<17}'.format(self._item_number_list[a]), '{:<20}'.format(self._description_list[a]), '{:<15}'.format(self._unit_list[a]), '{:>8}'.format(format(self._price[a], '.27'))) 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 def get_total(self): print('Item Number', '{:>18}'.format('Description'), '{:>19}'.format('Price')) for a in range(@, len(self._total_item_number)): print(" , '{:<17}'.format(self._total_item_number[a]), '{:<18}',format(self._total_des[a]), '{:>9}'.format(format(self._total_price[a], '.2f'))) print() print() self._sub_total = sum(self._total_price) #finding sum tax = self.__sub_total * 0.0825 #finding tax value total_price self. __sub_total * 1.0825 #finding Total price print('{:<12}'.format('Sub Total:'), '{:>10}'.format(format(self. _sub_total, '.2f'))) print('{:<12}'.format('Tax:'), '{:>10}'.format(format(tax, '.2f'))) print('{:<12}'.format('Total Price:'), {:>10}'. format(format(total_price, '.2f'))) def clear(self): #clearing all values to empty list-|| self. __total_item_number = []

135 136 137 138 main() self. total_des = [] self. _total_price = [] input('Press any key to continue') #calling the main method

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