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It’s 100% leak proof – no matter how hard we tried, we couldn’t get any liquid to escape and the automatic opening trigger means you can drink from it one-handed with ease. Finally, there’s an additional loop handle on top so it can easily be attached to bags or simply carried this way. All in all, this is brilliantly stylish and robust To verify the configuration, navigate once again to your domain, using https://: https:// your_domain project/main.py from flask import Blueprint , render_template . . . @main .route ( '/' ) def index ( ) : return render_template ( 'index.html' ) @main .route ( '/profile' ) def profile ( ) : return render_template ( 'profile.html' )

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SQLALCHEMY_DATABASE_URI: The database URI specifies the database you want to establish a connection with using SQLAlchemy. In this case, you either get it from a DATABASE_URI environment variable or you set a default value. The default URI value here follows the format sqlite:/// path/to/app.db. You use the os.path.join() function to join the base directory you constructed and stored in the basedir variable and the app.db file name. With this, creating a Flask application without setting a DATABASE_URI environment variable will connect to an app.db database file in your flask_app directory by default. The file will be created when you create your database tables. If you’d like to set a database URI for a different SQL engine, see Step 2 of How to Use Flask-SQLAlchemy to Interact with Databases in a Flask Application. Now, you’ll use the schema.sql file to create the database. To do so, you’ll create a Python file that will generate an SQLite .db database file based on this schema.sql file. Open a file named init_db.py inside your flask_app directory:

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Navigate to your flask_app directory in the new terminal. Then create a directory called main for your main blueprint inside the app directory:

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The create_app() function is the Flask application factory function. It creates an application instance called app from the Flask() class using the familiar app = Flask(__name__) line. You configure the application by importing configuration values from an object using the app.config.from_object() method, passing it the value of the config_class parameter, which holds the Config class as a default value. You will initialize your Flask extensions below the # Initialize Flask extensions here comment and register your application blueprints below the # Register blueprints here comment once you create them.In this schema file, you first delete the posts table if it already exists. This avoids the possibility of another table named posts existing, which might result in confusing behavior (for example, if it has different columns). This isn’t the case here, because you haven’t created the table yet, so the SQL command won’t be executed. Note that this will delete all of the existing data whenever you execute this schema file. For our purposes, you will only execute this schema once, but you might want to execute it again to delete whatever data you inserted and start with an empty database again.

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While your application might be more complex, we’ll create our Flask app in a single file, called myproject.py: Next, you’ll create a routes.py file inside your main blueprint directory, which will hold the routes of the main blueprint. Open a new routes.py file inside your main blueprint directory:If you stop your app and open up a Python REPL, you can create the database using the create_all method on the db object: flask_app/app/questions/routes.py from flask import render_template , request , url_for , redirect from app .questions import bp Here, you import the db database object from the app.extensions module. Then you create a model called Question using the db.Model class. In the model, you have an ID integer column as a primary key ( id), a text column for the question’s content ( content), and a text column for its answer ( answer). Then you use the special __repr__() method to represent each question using its content.