Steps to create a postgres database and deply a Python app to Heroku
pipenv install gunicorn
or
pip install gunicorn
https://devcenter.heroku.com/articles/heroku-cli
heroku login
heroku create appname
heroku addons:create heroku-postgresql:hobby-dev --app appname
heroku config --app appname
# Add to your app
touch Procfile
# Add this
web: gunicorn app:app
pip freeze > requirements.txt
touch runtime.txt
# Add this
python-3.7.2
git init
git add . && git commit -m 'Deploy'
heroku git:remote -a appname
git push heroku master
heroku run python
>>> from app import db
>>> db.create_all()
>>>exit()
heroku open
after doing db.create_all()
/app/.heroku/python/lib/python3.9/site-packages/flask_sqlalchemy/init.py:872: FSADeprecationWarning: SQLALCHEMY_TRACK_MODIFICATIONS adds significant overhead and will be disabled by default in the future. Set it to True or False to suppress this warning.
warnings.warn(FSADeprecationWarning(