🏧 ATM Simulation – Python Console App

A simple command-line ATM simulation built with Python that mimics real-world banking operations like deposits, withdrawals, balance checks, and transaction history.

🚀 Features

🔐 Secure PIN-based login 💰 Deposit & Withdraw money 📋 View transaction statement 👤 View user details 🔑 Change PIN/password 💾 Data saved automatically using JSON ⚠️ Input validation – handles invalid/non-numeric input gracefully

🛡️ Input Validation

This project handles invalid input using try/except: python try: x = int(input("choose a number: ")) except ValueError: print("Invalid input! Please enter a number.") continue

If the user types letters or symbols instead of a number, the program shows a friendly error and re-prompts instead of crashing.

🧪 Sample Accounts (for Testing)

Account_No Name PIN Balance 101 Sam 1433 ₹10,000 102 Ram 1566 ₹10,000 103 Sanju 1933 ₹10,000