I have encountered an issue related to the running of django-cms.
The issue is that you didn't have Django installed but that still wouldn't work because Django CMS is not really supposed to be ran stand alone like that, it's normally the dependency of a Django project like any other Django app.
To create a project for the CMS you should follow this tutorial: http://docs.django-cms.org/en/latest/introduction/01-install.html
I recommend reading and creating a separate Django project without Django CMS to help understand what a Django project requires, you can follow this tutorial: https://docs.djangoproject.com/en/2.2/intro/tutorial01/