https://flask-migrate.readthedocs.io/en/latest/
$ python manage.py db init
$ python manage.py db migrate
$ python manage.py db upgrade
$ python manage.py db --help
add movies from csv
python3 manage.py add_movies_batch -c mv_detail.csv
celery worker -A web_runner.celery --loglevel=info
issues in windows: https://github.com/NolanZhao/news_feed/issues/2
make sure the celery version is correct:
pip install celery==3.1.17