It's less that they don't "know" python - but rather that they only know a little. I know when I attended my first pycon, while I had been using Python a bunch

It's less that they don't "know" python - but rather that they only know a little. I know when I attended my first pycon, while I had been using Python a bunch I could have stood to spend some quality time in Zed's class, and generally sucking more knowledge out of things via the offer Zed is extending. Also, more and more we are seeing people new to Python come in the Django door (as well as other frameworks) - these people may be comfortable with Django as a RAD framework, but don't quite yet consider themselves "python programmers" and so courses like this can help them.