Fix error in DjangoContextInitializer

[DonJayamanne]

Copied from #25 (comment)
@Agnpalm

Windows version: Microsoft Windows [Version 10.0.16299.19]
Python version: 3.6.2 (v3.6.2:5fd33b5, Jul 8 2017, 04:57:36) [MSC v.1900 64 bit (AMD64)]

From the developer console:

The last error is from running Start without debug (Ctrl+F5), the others are there when opening a .py file. Except the Python 0.8.0 extension the only other extension installed is the Jupyter 1.1.4. This is a fresh install.