Python Project - Super Cashier

1. Background

Super Cashier is a simple program to help customer for doing transaction independently in the shop/supermarket. Customer can add bought items, item quantity and price per item and get discount if the transaction met the total price requirements.

2. Tools

Programming Languages and Software:

• Python
• Visual Studio Code

Library:

• Tabulate

3. Objective

Learning Objective:

• Create simple program cashier using Python
• Utilize OOP, Function, Exception Handling, and PEP8 principles to create Python Program
• Utilize modularization to create module script

Program Objective:

• Customer can add item name, item quantity, and price per item
• Customer can update item name/item quantity/price per item
• Customer can delete one item/more items
• Customer can reset their order
• Customer can check their order and total price

4. Flowchart

Description:

• Transaction module imported and its class called by Consumer
• Consumer can start their transaction
• Consumer add item, quantity, and price with method add_item
• Consumer can update their order with: (1) update_item_name for changing item name; (2) update_item_quantity for updating item quantity; (3) update_item_price for updating price of item.
• If they cancel to buy one item or more items, Consumer can use method delete_item with inserting item name
• If they cancel order, Consumer can use method reset_transaction and start order again
• If their order is done, Consumer can check order with method check_order
• Consumer get total price and discount if their total price is met the requirements with method total_price

5. Code Explanation

• main.py: The main script work as program simulation and import module transaction
• module_transaction.py: The module script that has class Transaction and its function methods

6. Test Case

Import module and assign its class in main script:

1. Customer add item name, item quantity, and price per item

• Code:

  

• Result:

  

2. Customer delete item

• Code:

  

• Result:

  

3. Customer reset their order

• Code:

  

• Result:

  

4. Customer check their order and total price

• Code:

  

• Result:

  

5. Customer update item name/item quantity/price per item

• Code:

  

• Result:

  

7. Special Test Case

Customer input empty item name

• Code:

  

• Result:

  

8. Conclusion and Future Work

Conclusion:

With Super Cashier Program, Consumer can do their transaction independently. It is hoped that it can help business actors in optimizing their business processes.

Future Work:

• Can be added with the choice option for transaction
• Can be added with list of items in the shop/supermarket to identify whether the item is available or not
• Can be added with list of items that is near to expiration date and give suggestion to customer

Author Copyright (c) 2024 Muhammad Chavez Assad Patriot