Library_Management_System (OOP Python Project)

This is simplified Library Management System implemented using OOP principles in Python. It support managing Books, Magazines, and DVDs ,as well as user registration, borrowing, returning, and reserving items - all through CLI Interface.

Features:

• View all available library items (Books, Magazines, DVDs)
• Search by item title or type
• Register new users
• Borrow and return items
• Reserve items (if supported)
• Load and save data to JSON files
• Full error handling using custom exceptions

Concepts Used

• Encapsulation
• Abstraction (using ABC base classes)
• Interfaces (Reservable)
• Inheritance & Polymorphism (for items like Book, DVD, Magazine,library_item)
• Custom Exceptions (ItemNotAvailableError, ItemNotFoundError, etc.)
• File Handling with json
• Static vs Instance methods (from_dict() vs to_dict())

How To Run The Project

1. Clone or download the project files.
2. Ensure items.json and users.json exist (or start with empty lists []).
3. Open a terminal in the project directory and run

First you’ll see the CLI menu: Welcome to the Library System

1. View all available items
2. Search item by title or type
3. Register as a new user
4. Borrow an item
5. Reserve an item
6. Return an item
7. Exit and Save

Notes

1. Only Book and DVD support reservation.
2. The system will keep asking for valid input unless you choose option 7 to exit.