This is a little bit rough right now. What I would suggest creating it outside of VS and importing it, but the new project from existing code feature currently doesn't create Django projects. So I'd suggest after using that to import the code
I'd open the project by hand and make a couple of updates to it. You should add:
At the end right before the "</Project>"
line, and then replace the 1st property group in the .pyproj file with:
<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
give you all of the normal Django project features. I'll also open a work item for us to support creating projects with different Django versions.