🏦 Banking System

This project was developed as part of the NTT DATA Bootcamp - Data Engineering with Python challenge on Digital Innovation One (DIO). The goal is to implement a simple banking system with deposit, withdrawal, statement, user, and account management functionalities.

⚙️ Features

The banking system includes the following features:

1. Deposit: Allows users to deposit positive amounts into their bank accounts.
2. Withdraw: Users can make up to 3 withdrawals per day, with a maximum limit of R$ 500.00 per withdrawal.
3. Statement: Displays all deposits and withdrawals made, as well as the current account balance.
4. Create User: Users can be created by providing their name, date of birth, CPF (validated as a unique 11-digit number), and address.
5. Create Account: Each user can have one or more accounts. Accounts are created with a unique sequential number tied to a user.
6. List Accounts: Displays all the accounts created, showing the account number, branch, and associated user.
7. List Customers: Lists all registered customers, displaying their name, CPF, and address.
8. Exit: Closes the system.

🔒 System Rules

• Deposits:
  • Only positive amounts are allowed.
  • All deposits are recorded in the account statement.
• Withdrawals:
  • Limit of 3 withdrawals per day.
  • Maximum limit of R$ 500.00 per withdrawal.
  • The system checks the account balance before allowing a withdrawal.
• Statement:
  • Lists all transactions (deposits and withdrawals).
  • Informs the user if no transactions were made.
• Users:
  • Users are registered with a unique CPF (validated to ensure it is a valid 11-digit number).
  • Duplicate CPFs are not allowed.
• Accounts:
  • Each user can have multiple accounts.
  • Accounts are created with a unique sequential number and tied to a fixed branch (0001).
  • Only users with a valid CPF can create accounts.

🛠️ Technologies Used

• Language: Python 3

📋 Prerequisites

• Python 3 installed on your machine.

🚀 How to Run

To run the banking system, follow these steps:

1. Make sure you have Python installed on your machine.
2. Clone this repository.

   git clone https://github.com/your-username/banking-system.git
   

3. Navigate to the project directory.

   cd Banking-Challenge
   

4. Run the script:

   python challenge.py
   

🔗 Links

• Digital Innovation One (DIO)
• Bootcamp NTT DATA - Engenharia de Dados com Python

🤝 Contribution

Contributions, issues, and pull requests are welcome! Feel free to check the issues page if you have any questions or suggestions.

📄 License

This project is free for educational purposes. This project is licensed under the MIT License. See the LICENSE file for more details.