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Python Library & Loan Calculator System

Completed: May 2025 Python Development

Project Overview

Developed a comprehensive desktop application combining a Library Management System with a Car Loan Calculator. The library system uses object-oriented programming principles with inheritance between physical books and eBooks, while the loan calculator provides a graphical interface for calculating car loan payments with validation and user feedback.

Key Features

Library Management

Manage both physical books and eBooks with a class hierarchy using inheritance

Loan Calculator

Calculate car loan payments with interest rates based on loan duration

GUI Interface

User-friendly interface built with Tkinter for car loan systems

Input Validation

Comprehensive validation for all user inputs with error handling

Technologies Used

Python OOP Tkinter GUI Development Inheritance File Handling

Challenges & Solutions

One of the main challenges was implementing the inheritance structure between physical books and eBooks while maintaining a consistent interface. This was solved by creating a base Book class with common attributes and methods, then extending it for specific book types.

Another challenge was designing an intuitive user interface for car loan calculator. The Tkinter loan calculator functionalities, with appropriate validation and user feedback mechanisms.