Library Management System

A simple Library Management System built using Python's Tkinter for GUI and basic class-based functionality. The system allows users to add, borrow, return, and view books in the library.

Features

• Add a Book: Allows users to add books with details like book ID, title, author, publication year, and available copies.
• Borrow a Book: Lets users borrow books by entering the book ID. The system checks if the book is available.
• Return a Book: Users can return borrowed books by entering the book ID.
• View Available Books: Displays a list of books that are available for borrowing.

Requirements

• Python 3.x
• Tkinter library (usually included with Python)

Installation

1. Clone the repository:

   git clone https://github.com/ridsb/library-management-system.git

2. Navigate to the project folder:

   cd library-management-system

3. Run the application:

   python library_ui.py

Functionality Overview

1. Add Book:

• This function allows users to add a new book to the library by entering details like book_id, title, author, year, and available copies.
• The system validates that all fields are filled, then adds the book to the library.
• Function in UI: add_book()

2. Borrow Book:

• This function lets a user borrow a book by entering its book_id.
• The system checks if the book is available for borrowing. If so, it updates the available copies and confirms the borrowing process.
• If the book is not available, the user receives a warning.
• Function in UI: borrow_book()

3. Return Book:

• This function allows a user to return a borrowed book by entering its book_id.
• The system verifies whether the book was borrowed and updates the availability count.
• If the book is not found or not borrowed, the system shows an error message.
• Function in UI: return_book()

4. View Available Books:

• Displays all available books in the library.
• The system shows details like book_id, title, author, year, and the number of available copies.
• Function in UI: view_books()

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Class Descriptions

Library Class

The core logic of the library is handled in the Library class. This class manages the list of books, and provides methods to:

• add_book(book_id, title, author, year, available, max_books): Adds a new book to the library.
• borrow_book(book_id): Checks if a book is available and reduces its available copies when borrowed.
• return_book(book_id): Increases the available copies when a book is returned.
• view_available_books(): Returns a list of all available books in the library.

LibraryUI Class

This class handles the graphical user interface (GUI) using Tkinter. It provides the following:

• UI Elements: Labels, entry fields, and buttons to interact with the system (add, borrow, return, and view books).
• Functions: Handles user interactions (button clicks) and calls appropriate methods in the Library class.

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Example Usage

1. Adding a Book:

   • Enter the book details in the "Add Book" section and click the "Add Book" button to add the book to the library system.

2. Borrowing a Book:

   • Enter the book ID in the "Borrow Book" section and click the "Borrow" button to borrow the book.

3. Returning a Book:

   • Enter the book ID in the "Return Book" section and click the "Return" button to return the borrowed book.

4. Viewing Available Books:

   • Click the "View Available Books" button to see all the books currently available for borrowing.