Give me a few minutes and I'll write something up. I actually just finished Flask to S3 on a project I'm working on. Next stop is PostgreSQL to store the url's.
Was not meant to be a troll, just a question if someone knows a similar tutorial for Flask. Actually, I've been thinking to write about my last project in Flask.
I noticed people on HN default very often to "this is trolling"
EDIT: https://gist.github.com/tsumnia/9986374
I still need to add proper logging to my application, but for now I print to the console if there is an error