Hi,
Django (and by implication, python) are an accepted technology at tor, but as much as I wish it would be different, the tor web infrastructure is still based on python 2.7 (basically, you can only depend on whatever is in wheezy and wheezy-backports if you want something to run on tor's infrastructure). Of course if you don't intend for your project to ever replace tor's own onionoo deployment, that doesn't matter.
Best, Luke
PS: I'm also going to take this opportunity to plug my onionoo client library that you can use to check that your onionoo clone performs to spec ;-) https://github.com/duk3luk3/onion-py