🏦 ATM Management System (Python)

🚀 Overview

This project is a Command-Line ATM Management System built using Python. It simulates real-world banking operations with two roles:

• Admin
• Customer

The system uses file handling to store account data and provides secure login with limited attempts.

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⚙️ Features

👨‍💼 Admin Panel

• Create Admin Accounts
• Create Customer Accounts
• Remove Customer Accounts
• Block Customer Accounts
• Unblock Customer Accounts

👤 Customer Panel

• Cash Withdrawal
• Cash Deposit
• Cash Transfer
• Check Account Balance
• Change PIN (Password)
• Print Transaction Receipt

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🧠 Concepts Used

• Object-Oriented Programming (OOP)
• File Handling (Data Persistence)
• Exception Handling
• Date & Time Handling
• Input Validation
• Basic Security (PIN & attempt limit)

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💻 Requirements

• Python 3.x
• Windows OS (for msvcrt module)

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📂 File Structure

<userid>_customer.txt   → Stores customer data (PIN, Balance, Attempts)
<userid>_admin.txt      → Stores admin password

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🔐 Account Format

Customer File Example:

1234,5000.0,3

• 1234 → PIN
• 5000.0 → Balance
• 3 → Remaining login attempts

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🔄 System Workflow

🔑 Login System

• User enters ID and PIN
• Maximum 3 attempts allowed
• Account gets blocked after failed attempts

💸 Transactions

• Withdraw → Deducts balance
• Deposit → Adds balance
• Transfer → Moves money between accounts
• Receipt → Shows transaction details with date & time

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🛠️ How to Run

1. Install Python 3
2. Save the file as atm.py
3. Open terminal / command prompt
4. Run:

python atm.py

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⚠️ Limitations

• File-based storage (no database)
• No encryption for PINs
• CLI-based (no GUI)
• Works best on Windows

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🔥 Future Improvements

• Add GUI (Tkinter / Web App)
• Use database (MySQL / SQLite)
• Encrypt PINs (hashing)
• Add transaction history
• Multi-user session handling

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👤 Author

Abdullah Aziz