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Your ROOT_URLCONF
is coltrane.urls, which is a python package. Which means the __init__.py will be used. But there is no urlpatterns variable in your __init__.py. If you want to include all the sub-url files you could do something like the following:
import categories
import entries
import links
import tags
urlpatterns = categories.urlpatterns + entries.urlpatterns + links.urlpatterns + tags.urlpatterns
However, I would not necessarily suggest that. Also, coltrane.urls doesn’t look like a root url file to me. Maybe cms.urls should be the root. Then in cms.urls you can include coltrane.urls by adding this to your urlpatterns:
(r'', include('coltrane.urls')),
Source:stackexchange.com