I have made a little Flask backend for Ember. I wrote about it on my tumblr. I do a pretty thorough job of explaining how to setup Flask and build ember-data, but I just steal code for the Ember TodoMVC example (with credit). The next installment will be a blow-by-blow explanation of the Ember app and extend it with something that can be side loaded (maybe people).
Also, I would really appreciate feedback and corrections. Apologies it’s a little long, but I work through some of errors I encountered when building ember-data with a fairly fresh install of Debian.