Inventory & Sales Management System (CLI)

A simple command-line based Inventory and Sales Management System built in Python. This project was made to practice core Python concepts - loops, conditions, file handling (JSON & CSV), and OOP.

Features

• Add Product - add new products with ID, name, price, and quantity
• Update Product - update price or quantity of existing products
• Delete Product - remove a product permanently
• View All Products - see full product list with total amount
• Sell Product - sell a product, stock updates automatically
• Stock Check - prevents selling if quantity is not available
• Sales History - every sale is saved with date, time, price, and quantity
• Data Storage - all data is saved in products.json and sales.csv, so it stays safe even after closing the program

Tech Used

• Python 3
• Built-in modules: json, csv, datetime

Project Structure

main.py       -> Starts the application, shows main menu
common.py     -> Shared functions (input validation, save/load data)
product.py    -> Product class and product management menu
sales.py      -> Sales class and selling logic
products.json -> Stores product data
sales.csv     -> Stores sales history

How to Run

1. Clone this repository
2. Make sure Python 3 is installed
3. Run the command:

   python main.py
   

4. Follow the on-screen menu to add products, sell products, and view your inventory

Note

This is a learning project. It is not built for production use, only to practice real Python concepts hands-on.

update soon