Use the Csv helper for the KHAGANAT_HOSTNAMES config

khaganat/settings.py

@@ -12,7 +12,7 @@ https://docs.djangoproject.com/en/2.0/ref/settings/
 
 from django.utils.translation import gettext_lazy as _
 from django.urls import reverse_lazy
-from decouple import config
+from decouple import config, Csv
 import os
 
 
@@ -29,10 +29,7 @@ SECRET_KEY = config('KHAGANAT_SECRET_KEY')
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = config('KHAGANAT_DEBUG', default=False, cast=bool)
 
-ALLOWED_HOSTS = [
-    _ for _ in config('KHAGANAT_HOSTNAMES', default='').split(',')
-    if _ != ''
-]
+ALLOWED_HOSTS = config('KHAGANAT_HOSTNAMES', default='', cast=Csv())
 
 
 # Application definition