django-configurations implementation in 5 minutes. This loads settings from a class instead of a module. To use it just clone https://github.com/thedrow/django/ and set the DJANGO_CONFIGURATION environment variable to whichever object you'd like to use and import this settings module instead of django.conf.settings. The class shouldn't inherit f…

class_and_module_settings.py

"""
Demonstrates loading settings from a module and overriding it by a class
"""

import os
from django.utils import importlib
from django.conf.default import *


class ConfigurationLoader(SettingsSourcesLoader):
    CONFIGURATION_ENVIRONMENT_VARIABLE = "DJANGO_CONFIGURATION"

    def load(self):
        sources = super(ConfigurationLoader, self).load()
        sources.extend([self._import_configuration(os.environ[self.CONFIGURATION_ENVIRONMENT_VARIABLE])])
        return sources

    def _import_configuration(self, configuration):
        try:
            module_and_config = configuration.rsplit('.', 1)
            return getattr(importlib.import_module(module_and_config[0]), module_and_config[1])
        except ImportError as e:
            raise ImportError("Could not import settings '%s' (Is it on sys.path?): %s" % (configuration, e))

    def get_error_message(self, setting_name, *args, **kwargs):
        desc = ("setting %s" % setting_name) if setting_name else "settings"

        return """Requested %s, but settings are not configured.
        You must either define the environment variable %s
        or call settings.configure() before accessing settings.""" % (
            desc, self.CONFIGURATION_ENVIRONMENT_VARIABLE)

settings = LazySettings(settings_sources_loader=ConfigurationLoader)

class_settings.py

"""
Demonstrates loading settings from a class
"""

import os
from django.utils import importlib
from django.conf.default import *


class ConfigurationLoader(BaseSettingsSourcesLoader):
    ENVIRONMENT_VARIABLE = "DJANGO_CONFIGURATION"

    def load(self):
        return [global_settings, self._import_configuration(os.environ[self.ENVIRONMENT_VARIABLE])]

    def _import_configuration(self, configuration):
        try:
            module_and_config = configuration.rsplit('.', 1)
            return getattr(importlib.import_module(module_and_config[0]), module_and_config[1])
        except ImportError as e:
            raise ImportError("Could not import settings '%s' (Is it on sys.path?): %s" % (configuration, e))

    def get_error_message(self, setting_name, *args, **kwargs):
        desc = ("setting %s" % setting_name) if setting_name else "settings"

        return """Requested %s, but settings are not configured.
        You must either define the environment variable %s
        or call settings.configure() before accessing settings.""" % (
            desc, self.ENVIRONMENT_VARIABLE)

settings = LazySettings(settings_sources_loader=ConfigurationLoader)