#Simple ATM Simulation

A lightweight Command Line Interface (CLI) application built in Python that mimics the core functionalities of a real-world ATM. This project focuses on logic flow, state management, and user input validation.

##Features

1. Secure Access: Basic PIN authentication to enter the system.
2. Balance Inquiry: Check your current account balance in real-time.
3. Deposits & Withdrawals: Update your balance instantly with input validation (prevents overdrawing or invalid amounts).
4. Currency Formatting: Uses Python f-strings (:.2f) to ensure all financial data displays with proper decimal precision.
5. Session Management: A continuous loop allows for multiple transactions until the user chooses to exit.

##Tech Stack

Language: Python Concepts used: Loops (while), Conditional Logic (if/elif/else), Variable State, and String Formatting.

##What I Learned

1. Through this project, I practiced:
2. Managing user state in a running application.
3. Handling edge cases (e.g., preventing negative deposits).
4. Formatting floats for a better User Experience (UX).

##Future Improvements

1. Add a Transaction History log.
2. Integrate a File System (CSV or JSON) to save the balance after closing the program.
3. Implement Multiple User Accounts using dictionaries.