Supermarket App using python- ( Python Project)

#-----------------SUPERMARKET MANAGEMENT SYSTEM--------------------

items = []

while True:

    print('------------------Welcome to the supermarket------------------')

    print('1. View items\n2. Add items for sale\n3. Purchase items\n4. Search items \n5. Edit items\n6. Exit')

    choice = int(input('Enter the number of your choice : '))

    if choice == 1 :

        print('------------------View Items------------------')

        print('The number of items in the inventory are : %d ' %len(items))

        if len(items) != 0:

            print('Here are all the items available in the supermarket.')

            for item in items:

                for key, value in item.items():

                    print("%s : %s " %(key, value))

           

    elif choice == 2 :

        print('------------------Add items------------------')

        print('To add an item fill in the form')

        item = {}

        item['name'] = input('Item name : ')

        while True:

            try:

                item['quantity'] = int(input('Item quantity : '))

                break

            except ValueError:

                print('Quantity should only be in digits')

        while True:

            try:

                item['price'] = int(input('Price $ : '))

                break

            except ValueError:

                print('Price should only be in digits')

        print('Item has been successfully added.')

        items.append(item)

    elif choice == 3 :

        print('------------------purchase items------------------')

        print(items)

        purchase_item = input('which item do you want to purchase? Enter name : ')

        purchase_quantity= int(input('Enter the quantity wanted : '))

        for item in items:

            if purchase_item.lower() == item['name'].lower() :

                if item['quantity'] != 0 :

                    if purchase_quantity <= item['quantity']:

                        print('Pay %d at checkout counter.' %(item['price']* purchase_quantity))

                        item['quantity'] -= purchase_quantity

                    else:

                        print("Quantity required is not available")

                else:

                    print('item out of stock.')

    elif choice == 4 :

        print('------------------search items------------------')

        find_item = input('Enter the items name to search in inventory : ')

        for item in items:

            if item['name'].lower() == find_item.lower():

                print('The item named ' + find_item + ' is displayed below with its details')

                print(item)

            else:

                print('item not found.')

    elif choice == 5 :

        print('------------------edit items------------------')

        item_name = input('Enter the name of the item that you want to edit : ')

        for item in items:

            if item_name.lower() == item['name'].lower():

                print('Here are the current details of ' + item_name)

                print(item)

                item['name'] = input('Item name : ')

                while True:

                    try:

                        item['quantity'] = int(input('Item quantity : '))

                        break

                    except ValueError:

                        print('Quantity should only be in digits')

                while True:

                    try:

                        item['price'] = int(input('Price $ : '))

                        break

                    except ValueError:

                        print('Price should only be in digits')

                print('Item has been successfully updated.')

                print(item)

            else:

                print('Item not found')

               

    elif choice == 6 :

        print('------------------exited------------------')

        break

    else:

         print('You entered an invalid option')