Django 3 Web Development Cookbook - Fourth Edition

How to do it...

To read sensitive settings from the environment variables, perform these steps:

1. At the beginning of settings/_base.py, define the get_secret() function as follows:

# settings/_base.pyimport osfrom django.core.exceptions import ImproperlyConfigureddef get_secret(setting):    """Get the secret variable or return explicit exception."""    try:        return os.environ[setting]    except KeyError:        error_msg = f'Set the {setting} environment variable'        raise ImproperlyConfigured(error_msg)

2. Then, whenever you need to define a sensitive value, use the get_secret() function, as shown in the following example:

SECRET_KEY = get_secret('DJANGO_SECRET_KEY')DATABASES = {    'default': {        'ENGINE': 'django.db.backends.postgresql_psycopg2', 'NAME': get_secret('DATABASE_NAME'), ...