app.py

from __future__ import absolute_import
from celery_flask import make_celery
from flask import Flask
from config import Config

config = Config()

flask_app = Flask(__name__)
flask_app.config.update(
    CELERY_BROKER_URL=config.CELERY_BROKER_URL
)
celery = make_celery(flask_app)

@celery.task()
def add_together(a, b):
    return a + b