Create a new app.py file within the service folder. The following lines show the code that creates a Flask application. The code file for the sample is included in the restful_python_2_02_01 folder, in the Flask01/service/app.py file:
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate
from models import orm
from views import service_blueprint
def create_app(config_filename):
app = Flask(__name__)
app.config.from_object(config_filename)
orm.init_app(app)
app.register_blueprint(service_blueprint, url_prefix='/service')
migrate = Migrate(app, orm)
return app
app = create_app('config') The code in the service/app.py file declares a create_app function that receives the configuration filename in the config_filename argument, customizes the SQLAlchemy database settings for the Flask app with this configuration file, and returns the app object. First, the function...