[Django]-ImportError: cannot import name patterns

The use of patterns is deprecated in Django1.10. Therefore do not import ‘patterns’ and your url pattern should be as follows:

from django.conf.urls import include, url

urlpatterns=[
    url(r'^admin/', include(admin.site.urls)),
    url(........),
]

I ran into this error when trying to install Django-Guardian. Instead of downgrading Django, you can install the latest version of Django-Guardian.
Try,

pip install 'django-guardian>=1.4.6'

This resolved the issue for me.