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    • Project in Python - Supermarket Cashier

    June 06, 2021 Preetam Biswas
    post-image


    Let's have a look at how the flow of the project would look like:
    flow-chart



    def enterProducts():
        buyingData = {}
        enterDetails = True
        while enterDetails:
            details = input('Press A to add product and Q to quit: ')
            if details == 'A':
                product = input('Enter product: ')
                quantity = int(input('Enter quantity: '))
                buyingData.update({product:quantity})
            elif details == 'Q':
                enterDetails = False
            else:
                print('Please select a correct option')
        return buyingData

     
    def getPrice(product,quantity):
        priceData = {
            'Biscuit':30,
            'Chicken':200,
            'Egg':10,
            'Fish':300,
            'Coke':50,
            'Bread':20,
            'Apple':100,
            'Onion':80
        }
        subtotal = priceData[product]*quantity
        print(product + '₹' + str(priceData[product] + 'x' + 
            str(quantity) + '=' + str(subtotal)))
        return subtotal

     
    def getDiscount(billAmount,membership):
        discount = 0
        if billAmount >= 1000:
            if membership == 'Gold':
                billAmount = billAmount*0.80
                discount = 20
            elif membership == 'Silver':
                billAmount = billAmount*0.90
                discount = 10
            elif membership == 'Bronze':
                billAmount = billAmount*0.95
                discount = 5
            print(str(discount) + '% off for' + membership + '' + 
                'membership on total amount: ₹'+str(billAmount))
        else:
            print('No discount on amount less than ₹1000')
        return billAmount

     
    def makeBill(buyingData,membership):
        billAmount = 0
        for key, value in buyingData.items():
            billAmount += getPrice(key, value)
        billAmount = getDiscount(billAmount, membership)
        print('The discounted amount is ₹' + str(billAmount))


    buyingData = enterProducts()
    membership = input('Enter customer membership: ')
    makeBill(buyingData, membership)



    Output:
    Press A to add product and Q to quit: A
    Enter product: Bread
    Enter quantity: 5
    Press A to add product and Q to quit: A
    Enter product: Coke
    Enter quantity: 7
    Press A to add product and Q to quit: A
    Enter product: Fish
    Enter quantity: 2
    Press A to add product and Q to quit: A
    Enter product: Egg
    Enter quantity: 12
    Press A to add product and Q to quit: Q
    Enter customer membership: Silver
    Bread: ₹20x5=100
    Coke: ₹50*7=350
    Fish: ₹300*2=600
    Egg: ₹10*12=120
    10%off for Silver membership on total amount: ₹1170
    The discounted amount is ₹1053

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