How to create empty wordpress permalink and redirect it into django website?
There are many ways to do this. You will have to provide more info about what you are trying to accomplish to give the right advise.

make a page with a redirect (this is an ugly solution in seo and user perspective)
handle this on server level.
load your Django data with an ajax call
I need to do such thing, but I don't even know if it is possible to accomplish and if so, how to do this. 
I wrote an Django application which I would like to 'attach' to my wordpress blog. However, I need a permalink (but no page in wordpress pages section) which would point to Django application on the same server. Is that possible?