ATM-Using-Python

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ATM System - Python Implementation

Overview

This project implements a basic ATM (Automated Teller Machine) system using Python. The system includes two classes:

1. Account: Manages individual user account details and operations.
2. ATM: Handles the system's core functionalities, such as managing multiple accounts and authenticating users.

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Features

1. Account Class

The Account class encapsulates the behavior and attributes of a bank account.

Attributes:

• user_id: A unique identifier for the account holder.
• pin: A personal identification number for account security.
• balance: The account's current balance (default is 0).
• transaction_history: A list to store the history of all transactions (deposits and withdrawals).

Methods:

• deposit(amount): Adds the specified amount to the account balance and updates the transaction history.
• withdraw(amount): Deducts the specified amount from the balance if sufficient funds are available, and updates the transaction history.
• check_balance(): Displays the current account balance.
• change_pin(new_pin): Updates the account's PIN.
• show_transaction_history(): Displays all transactions for the account.

2. ATM Class

The ATM class manages the overall functionality of the ATM system.

Attributes:

• accounts: A dictionary that maps user_id to their respective Account object.

Methods:

• add_account(account): Adds a new Account object to the system.
• authenticate_user(user_id, pin): Authenticates a user by verifying their user_id and pin. Returns the authenticated account object if successful, otherwise prints an error message.

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Requirements

• Python 3.6 or higher.

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How to Run

1. Copy the provided code into a Python file (e.g., atm_system.py).
2. Run the file in a Python environment or terminal.
3. Follow the on-screen prompts to interact with the ATM system.

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Notes

• The system is for educational purposes and does not include advanced security features like encryption.
• Error handling is minimal; ensure inputs are correct when running the code.

Let me know if you need enhancements like advanced error handling or additional features!