from flask import Flask from flask_sqlalchemy import SQLAlchemy app = Flask(__name__) app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///example.db" db = SQLAlchemy(app) class User(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(80), nullable=False) @app.route("/") def home(): user = User(name="John") db.session.add(user) db.session.commit() return "Hello, " + user.name if __name__ == "__main__": app.run()