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Use a virtualenv.
Use with Nginx in production. See https://blog.marksteve.com/deploy-a-flask-application-inside-a-digitalocean-droplet/.
SSL is good. Read https://certbot.eff.org. Use the following cron job for automatic renewal: 43 1,13 * * * certbot renew --post-hook "service nginx reload" (after running crontab -e).
Run pip install -r requirements.txt to install all necessary libraries.
- Flask
- Gunicorn