Stock Trading Flask Application README

Introduction

This is a stock trading Flask application that allows a user to buy and sell stocks.

Required Libraries and Technologies

-cs50 -Flask -Flask-Session -requests -gunicorn -psycopg2-binary -urllib3==1.26.5

Key Features

• Buy stocks with fake available cash balance, starting out with $10,000.00
• View portfolio of stocks
• Real-time stock data via a financial API

Deployment

The application uses the following environment variables to run:

• API_KEY: This is the API key required to retrieve real-time stock data.
• DATABASE_URL: This is the URL to the SQL database used to store user data.

Code Structure

The code is structured as follows:

• The import section imports the required libraries and modules
• The app object is created and configured to use the filesystem for storing session data and to auto-reload templates.
• The db object is created and configured to use the SQL database defined by the DATABASE_URL environment variable.
• The code creates necessary tables for data records
• The user_balance function retrieves the user's cash balance and calculates the total value of their portfolio.
• The index route displays the portfolio page and calls the user_balance function to retrieve data.
• The buy route handles the buying of stocks by the user. It checks for the availability of funds and updates the user's data in the database.
• The after_request function sets response headers to prevent caching.

Running the Application

To run the application, set the required environment variables and run flask run in the terminal.