🐍 Python-Projects

It is a collection of my Python projects built using Object-Oriented Programming (OOP) concepts. Each project is a standalone command-line application with its own folder, code, and documentation.

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🏷️ Repository Info

Label	Detail
Language	Python 3.x
Type	CLI Application Collection
Paradigm	Object-Oriented Programming
Dependencies	None (standard library only)
Author	Dev Gothi

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📁 Repository Structure

Python-Projects/
├── Library Management System/
│   ├── semi.py
│   ├── Library.py
│   ├── main.py
│   └── README.md
├── Contact Book/
│   ├── contact_book.py
│   └── README.md
├── ATM System/
│   ├── atm.py
│   └── README.md
├── LICENSE
└── README.md          # (this file)

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📚 Projects

1️⃣ Library Management System

A CLI-based library management system to manage books, members, and borrowing transactions.

Features	Add/view books & members, search books, issue/return books, track transactions, auto-calculate late fines
Classes	Book, Member, Transaction, Library
Storage	data.json

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2️⃣ Contact Book

A CLI-based contact manager to save and organize personal/professional contacts.

Features	Add/view/search/update/delete contacts, case-insensitive search, alphabetically sorted view
Classes	ContactBook
Storage	contacts.json

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3️⃣ ATM System

A CLI-based ATM simulator supporting PIN-protected banking operations.

Features	Set PIN, check balance, deposit, withdraw (with insufficient-balance check), supports multiple independent accounts
Classes	Atm
Storage	In-memory only

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🚀 Getting Started

✅ Prerequisites

• Python 3.x installed
• No external libraries required for any project

▶️ Running a Project

Navigate into the desired project folder and run its main file:

cd "Library Management System"
python main.py

cd "Contact Book"
python contact_book.py

cd "ATM System"
python atm.py

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👤 Author

Dev Gothi B.Tech Electronics and VLSI Engineering, SVNIT Surat