Banking System

A comprehensive, command-line interface (CLI) based banking application built entirely in Python. This project simulates a wide range of real-world banking operations, from basic account management to complex financial services like loans, fixed deposits, and investments. It's designed as a robust demonstration of Python programming for handling data, user interactions, and business logic in a console environment.

✨ Features

The system is packed with features, categorized for clarity:

🏦 Core Banking & Accounts

Create New Account: Onboard new customers with input validation for details like name, phone, and PAN.
Login System: Secure login using account number and a hashed password (SHA-256).
Account Management: Search for accounts, view details, and update personal information (address, phone, password).
Balance Operations: Deposit and withdraw funds.
Fund Transfers: Transfer money securely between accounts within the bank.

💳 Cards, Payments & UPI

Debit/Credit Cards: Issue new cards with randomly generated numbers, expiry dates, and CVVs.
Card Management: View, block, unblock, and request replacement cards.
UPI Services: Create and manage unique UPI IDs (@advbank).
UPI Payments: Send money instantly using UPI IDs.

💰 Loans & Deposits

Fixed Deposits (FDs): Create FDs for various tenures with different interest rates.
FD Management: View all active FDs and break them prematurely with a penalty calculation.
Automatic FD Maturity: The system automatically processes matured FDs upon startup.
Loan Services: Apply for Personal, Home, Education, and Vehicle loans.
EMI Calculation: Automatically calculates the Equated Monthly Installment (EMI) for new loans.
Loan Repayment: View loan status, pay monthly EMIs, or pay off the entire loan amount.

📈 Investments

Diverse Portfolio: Make investments in Mutual Funds, Stocks, Gold, and Government Bonds.
Investment Management: View your investment portfolio with simulated current values.
Sell Investments: Sell active investments with calculated profit/loss.

🧾 Utilities & Reporting

Transaction History: View a list of the last 100 recent transactions for your account.
Export Transactions: Export transaction history to either CSV or JSON format for record-keeping.
Data Persistence: All account, transaction, and financial product data is saved locally in .csv files.

🛠️ Technologies Used

Language: Python 3
Standard Libraries: csv, os, random, datetime, hashlib, re, json

No external libraries are required to run this application.

🚀 Getting Started

Follow these instructions to get a copy of the project up and running on your local machine.

Prerequisites

You need to have Python 3 installed on your system. You can download it from python.org.

Installation & Usage

Clone the repository:

git clone [https://github.com/codingwithnsh/Banking-System.git](https://github.com/codingwithnsh/Banking-System.git)
cd advanced-cli-banking-system

Run the application:
```
python main.py
```
How it Works:
- The script will start, and you can interact with it through the command line.
- All necessary data files (banking.csv, transactions.csv, etc.) will be automatically created in the same directory if they don't exist.

📁 File Structure

The script will generate the following CSV files to store data:

codingwithnsh/Banking-System