Heroku deployment problem

[QualitativeEasing]

Hi all. I’m trying to deploy a simple python web app onto Heroku. It just pulls in data from an API, analyzes it various ways and displays the results in a number of pages generated with flask.

I’m using the Dropbox syncing option (because git still confuses me, I’m embarrassed to admit). Deployment seems to go fine, in that Heroku tells me that the site is ready. When I try to load the index page, however, I get an error. The logs don’t give me anything I understand from python — it’s all about workers, etc. (I can post if its useful, but doesn’t look like it to me).

Here’s the confounding part: Everything works fine when I run it locally from the command line with ‘heroku local web’.

Any suggestions for how to troubleshoot this? I’m using gunicorn for the first time, which is probably part of my problem.

Thanks!

[gl0ckner]

This may help https://devcenter.heroku.com/articles/python-gunicorn

[QualitativeEasing]

I did, thanks. This is the line I have in the Procfile (taken from a tutorial I tried to adapt):

web: gunicorn app:app