🏧 Python ATM Simulator

A terminal-based ATM simulation built in Python that supports card authentication, PIN verification, and multi-currency withdrawals with commission and input validation.

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🚀 Features

• 🔐 Card verification system (3 attempts limit)
• 🔢 PIN authentication with error handling
• 💱 Multi-currency withdrawals:
  • GEL (₾)
  • USD ($)
  • EUR (€)
• 💸 Automatic currency conversion
• 📉 Commission calculation on withdrawals
• ⚠️ Input validation (non-numeric, negative values, etc.)
• 🔁 Loop-based session with exit option
• ⛔ Session termination on too many failed attempts

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🧠 How It Works

1. User enters card name (must match predefined value)
2. User inputs PIN (3 attempts allowed)
3. After successful login:
   • Choose currency
   • Enter withdrawal amount
   • System validates and processes transaction
4. Balance updates after each withdrawal
5. User can exit anytime

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⚙️ Configuration

You can modify these values in the code:

GEL_TO_USD = 2.68
GEL_TO_EUR = 3.08
commission = 0.015
pin = 1111
Wallet = 10000