I've just created Django project and ran server.
It works fine but showed me warnings like
You have 14 unapplied migration(s)...
python manage.py migrate
?: (1_7.W001) MIDDLEWARE_CLASSES is not set.
HINT: Django 1.7 changed the global defaults for the MIDDLEWARE_CLASSES.
django.contrib.sessions.middleware.SessionMiddleware, django.contrib.auth.middleware.AuthenticationMiddleware, and django.contrib.messages.middleware.MessageMiddleware were removed from the defaults. If your project needs these middleware then you should configure this setting.
You have 3 unapplied migration(s).
Your project may not work properly until you apply
the migrations for app(s): admin, auth.
~$ python3.5 --version
(1, 10, 1, 'final', 1)
So my problem was that I used wrong python version for migration.
python3.5 manage.py migrate