Deployment Settings Auto Change Django.How

import sys

1. Database

if ‘runserver’ not in sys.argv:

Production database

    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.postgresql_psycopg2',
            'NAME': 'aaadb',
            'USER': 'postgres',
            'PASSWORD': 'pass',
            'HOST': 'aaadb.cymjfpovl5ev.eu-west-1.rds.amazonaws.com',
            'PORT': '5432',
        }
    }
else:

Local database

    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.postgresql_psycopg2',
            'NAME': 'aaa2',
            'USER': 'postgres',
            'PASSWORD': 'pass',
            'HOST': 'localhost',
            'PORT': '',
        }
    }

2. Debug

if 'runserver' not in sys.argv:
    DEBUG = False
else:
    DEBUG = True

3. Some debug apps

if 'runserver' in sys.argv:
    INSTALLED_APPS += [
    'debug_toolbar', # and other apps for local development
   ]

4. Allowed hosts

if 'runserver' in sys.argv:
    ALLOWED_HOSTS += [
        '127.0.0.1',
        'localhost',
        '.example.com',
        'vagrant',
        '*',
        ]

5. Storage

https://stackoverflow.com/questions/59437637/django-use-private-s3-storage-only-in-production-environment