flask structure

  1. Create Project Directory:

  2. Create a project directory to contain your Flask application.

  3. Initialize Virtual Environment:

  4. Navigate to the project directory and create a virtual environment using the command: python -m venv venv

  5. Activate Virtual Environment:

  6. Activate the virtual environment:

    • On Windows: .\venv\Scripts\activate
    • On Unix or MacOS: source venv/bin/activate

  7. Install Flask:

  8. Install Flask within the virtual environment: pip install Flask

  9. Create Flask App File:

  10. Create a Python file (e.g., app.py) to define your Flask application.

  11. Import Flask:

  12. Import the Flask class from the Flask module: python from flask import Flask

  13. Create App Instance:

  14. Create an instance of the Flask class: python app = Flask(__name__)

  15. Define Route and View Function:

  16. Define a route and a corresponding view function using the @app.route decorator: python @app.route('/') def hello_world(): return 'Hello, World!'

  17. Run the App:

  18. Add the following code to run the Flask application: python if __name__ == '__main__': app.run(debug=True)

  19. Run the Application:

    • Run the Flask application using the command: python app.py

  20. Access the App:

    • Open a web browser and navigate to http://127.0.0.1:5000/ to view your Flask application.

  21. Optional: Structure Enhancement:

    • Organize your project by creating additional directories for static files, templates, and other resources.

  22. Debug Mode (Optional):

    • While developing, you can enable the debug mode to automatically reload the server on code changes: python app.run(debug=True)

  23. Deactivate Virtual Environment (Optional):

    • When done, deactivate the virtual environment: deactivate