Application factory

Create the app in a function so tests and production can each build their own.

flask beginner #structure#config#blueprints
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flask-app-factory.py
from flask import Flask
from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()


def create_app(config_object="config.Config"):
    app = Flask(__name__)
    app.config.from_object(config_object)
    db.init_app(app)

    from .routes import main_bp
    app.register_blueprint(main_bp)

    @app.get("/health")
    def health():
        return {"status": "ok"}

    return app