app.py

from flask import Flask
from flask.ext.security import Security, SQLAlchemyUserDatastore
from flask.ext.babel import Babel
from scan import settings
from celery import Celery
from core.database.models import db, User, Role
from flask.ext.cache import Cache
from core.web.main_views import main_views

def make_celery(app):
    celery = Celery(app.import_name, broker=app.config['BROKER_URL'])
    celery.conf.update(app.config)
    TaskBase = celery.Task
    class ContextTask(TaskBase):
        abstract = True
        def __call__(self, *args, **kwargs):
            with app.app_context():
                return TaskBase.__call__(self, *args, **kwargs)
    celery.Task = ContextTask
    return celery

def create_app():
    app = Flask(__name__, template_folder='templates')
    app.config.from_object('scan.settings')
    db.app = app
    db.init_app(app)
    return app

def create_test_app():
    app = create_app()
    app.config.from_object('scan.test_settings')
    db.app = app
    db.init_app(app)
    return app

app = create_app()
app.register_blueprint(main_views)
cache = Cache(app)

babel = Babel(app)
celery = make_celery(app)

if __name__ == '__main__':
    db.create_all(app=app)
    user_datastore = SQLAlchemyUserDatastore(db, User, Role)
    security = Security(app, user_datastore)
    app.run(debug=settings.DEBUG, host="0.0.0.0")