Simple Supermarket Management System in Python

items = [] while True: display = input('Press enter to continue.') print('================ Supermarket Management System ================') print('1. View items\n2. Add items for sale\n3. Purchase items\n4. Search items \n5. Edit items\n6. Exit') choice = input('Enter the number of your choice : ') if choice == '1' : print('------------------View Items------------------') print('The number of items in the inventory are : ',len(items)) while len(items) != 0: print('Here are all the items available in the supermarket.') for item in items: for key, value in item.items(): print(key, ':', value) break 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 : ') for item in items: if purchase_item.lower() == item['name'].lower() : if item['quantity'] != 0 : print('Pay ', item['price'] , 'at checkout counter.') item['quantity'] -= 1 else: print('item out of stock.') elif choice == '4' : print('------------------search items------------------') find_item = input('Enter the item\'s 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')