This example demonstrates a minimal Flask web application that serves a single “Hello world” page at the root route. It shows how to structure a project with a separate blueprint module, using Flask’s `Blueprint` class to define the route in `views.py` and register that blueprint in the main `myapp` package. The main script creates a Flask app instance, registers the blueprint via `app.register_blueprint`, and runs the development server in debug mode. No data visualization or rendering is involved—the output is plain text.