Skip to main content
This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (
Help us improve Python packaging - Donate today!

Helpers for dealing with application settings

Project Description


Coolfig is a library to easily write configuration specifications to be fulfilled by various sources.


pip install coolfig


Define your schema:

from coolfig import Settings, Value, types

class DefaultSettings(Settings):
     SECRET_KEY = Value(str)
     DEBUG = Value(types.boolean, default=False)
     DB_URL = Value(types.sqlalchemy_url)
     LOCALES = Value(types.list(str))

Instantiate the configuration with a data provider:

from coolfig import EnvConfig

settings = DefaultSettings(EnvConfig(prefix='MYAPP_'))


if settings.DEBUG:


Django integration

In your file:

from coolfig import EnvConfig, load_django_settings




ROOT_URLCONF = 'testprj.urls'

WSGI_APPLICATION = 'testprj.wsgi.application'

      'BACKEND': 'django.template.backends.django.DjangoTemplates',
      'DIRS': [],
      'APP_DIRS': True,
      'OPTIONS': {
            'context_processors': [

load_django_settings(EnvConfig(), locals())

Then, in each settings submodule of each app, you can define additional setting entries to be added to the main settings object. For example, in testprj/my_custom_app/ you can add the following:

from coolfig import Settings, Value

class AppSettings(Settings):  # The class has to be named AppSettings
   MY_APP_SETTING = Value(str)

Usage is 100% compatible with Django’s settings machinery:

from django.conf import settings



1.0.2 - 2016-03-14

  • Additional bug-fixing.

1.0.1 - 2016-03-14

  • Fixed a bug in AppConfig checking.

1.0.0 - 2016-03-14

  • Added support for Django AppConfig (including custom settings path configured with a settings property on the config class.
  • Officially supporting Django 1.4, 1.5, 1.6, 1.7, 1.8 and 1.9, running on Python 2.7, 3.4 (where Django supports itself supports it) and PyPy.

0.4.0 - 2015-10-05

  • Added support for the CACHES Django settings directive
  • Added support for computed_values
  • Added initial documentation stub

0.3.0 - 2015-07-20

  • Added first-class support for Django
  • Added some more importing shortcuts (EnvConfig, DictConfig, load_django_settings)
  • Added a DictValue value, able to load multiple keys with the same prefix into the same value
  • Added an API to merge different settings schema into an existing object

0.2.0 - 2015-05-31

  • Added a EnvConfig provider
  • Added a dottedpath value type

0.1.0 – 2015-05-30

  • Initial release
Release History

Release History

This version
History Node


History Node


History Node


History Node


History Node


History Node


History Node


Download Files

Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
coolfig-1.0.2-py2-none-any.whl (13.4 kB) Copy SHA256 Checksum SHA256 2.7 Wheel Mar 14, 2016
coolfig-1.0.2.tar.gz (11.5 kB) Copy SHA256 Checksum SHA256 Source Mar 14, 2016

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting