💦Python-Decouple

Python Decouple

Decouple helps you to organize your settings so that you can change parameters without having to redeploy your app.

It also makes it easy for you to:

1. store parameters in ini or .env files;

2. define comprehensive default values;

3. properly convert values to the correct data type;

4. have only one configuration module to rule all your instances.

It was originally designed for Django but became an independent generic tool for separating settings from code.

Install:

pip

pip install python-decouple

pipenv

pipenv install python-decouple

Then use it on your settings.py.

Import the config object:

from decouple import config, Csv

Retrieve the configuration parameters:

SECRET_KEY = config('SECRET_KEY')
DEBUG = config('DEBUG', default=False, cast=bool)

For Allowed Host:

ALLOWED_HOSTS = config('ALLOWED_HOSTS', default='127.0.0.1', cast=Csv())

Postgres database config:

settings.py

DATABASES = {
    "default": {
        "ENGINE": config("ENGINE"),
        "NAME": config("DATABASE"),
        "USER": config("USER"),
        "PASSWORD": config("PASSWORD"),
        "HOST": config("HOST", "localhost"),
        "PORT": config("PORT", "5432"),
    }
}

Decouple supports both .iniand .env files.

.env

DEBUG=True
ALLOWED_HOST='.localhost,'
SECRET_KEY=ARANDOMSECRETKEY
ENGINE=django.db.backends.postgresql
DATABASE=<dbname>
USER=<db_username>
PASSWORD=<db_password>
HOST=db
PORT=5432
# This is comment 

config.ini

[settings]
DEBUG=True
ALLOWED_HOST='.localhost,'
SECRET_KEY=ARANDOMSECRETKEY
ENGINE=django.db.backends.postgresql
DATABASE=<dbname>
USER=<db_username>
PASSWORD=<db_password>
HOST=db
PORT=5432