creating environment variable in python

1$ pip install python-decouple

1ALLOWED_HOSTS=.localhost, .herokuapp.com

1DEBUG=False python manage.py

1import os
2from decouple import config
3
4BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
5SECRET_KEY = config('SECRET_KEY')
6DEBUG = config('DEBUG', cast=bool)
7DATABASES = {
8    'default': {
9        'ENGINE': 'django.db.backends.postgresql_psycopg2',
10        'NAME': config('DB_NAME'),
11        'USER': config('DB_USER'),
12        'PASSWORD': config('DB_PASSWORD'),
13        'HOST': config('DB_HOST'),
14        'PORT': '',
15    }
16}

1ALLOWED_HOSTS = config('ALLOWED_HOSTS', cast=lambda v: [s.strip() for s in v.split(',')])

1SECRET_KEY=3izb^ryglj(bvrjb2_y1fZvcnbky#358_l6-nn#i8fkug4mmz!
2DEBUG=True
3DB_NAME=HELLO_DJANGO
4DB_USER=U_HELLO
5DB_PASSWORD=hA8(scA@!fg3*sc&xaGh&6%-l<._&xCf
6DB_HOST=127.0.0.1

1DEBUG = config('DEBUG', cast=bool)
2EMAIL_PORT = config('EMAIL_PORT', cast=int)

1from decouple import config, Csv
2
3ALLOWED_HOSTS = config('ALLOWED_HOSTS', cast=Csv())

1DEBUG = config('DEBUG', default=True, cast=bool)

1from decouple import config