Bank Management System by Om

This is a reupload of a menu-driven Python application for managing bank accounts created by Om, transactions, loans, and administrative tasks. It supports user authentication, audit logging, automated backups, and more.

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Features

• User operations: Register, login/logout, check balance, deposit, withdraw, transfer funds, view statements, update details, close account.
• Loan management: Apply for loans, view existing loans, make loan payments.
• Administrative operations: Admin login/logout, freeze/unfreeze accounts, view audit logs.
• Audit logging: All critical actions are logged to audit.log with timestamps.
• Automated backups: Periodic backups of CSV data files to backups/ directory.
• Data persistence: Account, transaction, and loan data stored in CSV files.

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Requirements

• Python 3.8 or higher
• schedule (for automated backups)

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Setup

1. Clone or download this repository into your local machine.

2. Create a virtual environment (recommended):

   python3 -m venv venv
   source venv/bin/activate      # On Windows: venv\Scripts\activate

3. Install dependencies:

   pip install schedule

4. Prepare data files:

   • Ensure the following files exist in the project root (they will be created automatically on first run if missing):
     • accounts.csv
     • transactions.csv
     • loans.csv
     • admins.json
     • audit.log

   You can also initialize admins.json with an empty JSON object:

   {}

5. (Optional) Create an admin user:

   Edit admins.json and add an entry with a username and a SHA256-hashed password. Example:

   {
     "superadmin": "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd..."
   }

   To generate a SHA256 hash for your desired password in Python:

   import hashlib
   print(hashlib.sha256(b"your_password_here").hexdigest())

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Running the Application

With your virtual environment activated, simply run:

python bank_management_full.py

You will see a menu with options for both user and admin operations.

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File Structure

├── main.py   		     # Main application script
├── accounts.csv             # Stores account details
├── transactions.csv         # Stores transaction logs
├── loans.csv                # Stores loan records
├── admins.json              # Admin credentials (username: password_hash)
├── audit.log                # Audit log of all actions
└── backups/                 # Directory where automated backups are saved

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Notes

• Data security: Passwords are stored as SHA256 hashes. For production use, consider using a stronger hashing algorithm like bcrypt.
• Backup interval: The default backup interval is every 60 minutes. Modify BACKUP_INTERVAL_MINUTES in bank_management_full.py as needed.
• Extensibility: You can replace CSV storage with a database, integrate email/SMS notifications, or build a web API on top of this core logic.