AppSettings

conf.py

from .conf_base import AppSettings


class Settings(AppSettings):
    YOUR_SETTING = True
    """
    Give each setting some documentation for sphinx autodoc if you like.
    """


settings = Settings()

conf_base.py

from django.conf import settings as django_settings
try:
    from django.conf import BaseSettings
except ImportError:  # Django <= 1.2
    from django.conf import Settings as BaseSettings


class AppSettings(BaseSettings):
    """
    A holder for app-specific settings.

    The holder returns attributes from the project's setting module, 
    falling back to the default attributes found on a subclass of
    ``AppSettings`` if the attribute wasn't found.
    """

    def __getattribute__(self, attr):
        if attr == attr.upper():
            try:
                return getattr(django_settings, attr)
            except AttributeError:
                pass
        return super(AppSettings, self).__getattribute__(attr)

example_usage.py

from yourapp.conf import settings

# You can use normal settings.
settings.INSTALLED_APPS

# You can rely that your custom setting will have the default you gave it in your conf.
settings.YOUR_SETTING