A simple way in Django's settings.py to separate out default, 3rd party, and local Apps

settings_apps.py

# A simple way to break out Apps within the Django settings.py
# file in a logical way. Third party and Local Apps will vary 
# based on the project.

DEFAULT_APPS = (
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.sites',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.admin',
    'django.contrib.admindocs',
)

THIRD_PARTY_APPS = (
    'psycopg2',
    'south',
    'selenium',
    'social_auth',
    'twitter_tag',
)

LOCAL_APPS = (
    'core',
)

INSTALLED_APPS = DEFAULT_APPS + THIRD_PARTY_APPS + LOCAL_APPS