Upgrade project template based on Django 2.0

manage.py

@@ -4,7 +4,12 @@ import sys
 
 if __name__ == "__main__":
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "{{ project_name }}.settings")
-
-    from django.core.management import execute_from_command_line
-
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
     execute_from_command_line(sys.argv)

project_name/settings.py

@@ -3,10 +3,10 @@ Django settings for {{ project_name }} project on Heroku. For more info, see:
 https://github.com/heroku/heroku-django-template
 
 For more information on this file, see
-https://docs.djangoproject.com/en/1.11/topics/settings/
+https://docs.djangoproject.com/en/2.0/topics/settings/
 
 For the full list of settings and their values, see
-https://docs.djangoproject.com/en/1.11/ref/settings/
+https://docs.djangoproject.com/en/2.0/ref/settings/
 """
 
 import os
@@ -18,7 +18,7 @@ PROJECT_ROOT = os.path.dirname(os.path.abspath(__file__))
 
 
 # Quick-start development settings - unsuitable for production
-# See https://docs.djangoproject.com/en/1.11/howto/deployment/checklist/
+# See https://docs.djangoproject.com/en/2.0/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
 SECRET_KEY = "{{ secret_key }}"
@@ -75,7 +75,7 @@ WSGI_APPLICATION = '{{ project_name }}.wsgi.application'
 
 
 # Database
-# https://docs.djangoproject.com/en/1.11/ref/settings/#databases
+# https://docs.djangoproject.com/en/2.0/ref/settings/#databases
 
 DATABASES = {
     'default': {
@@ -100,7 +100,7 @@ AUTH_PASSWORD_VALIDATORS = [
 ]
 
 # Internationalization
-# https://docs.djangoproject.com/en/1.11/topics/i18n/
+# https://docs.djangoproject.com/en/2.0/topics/i18n/
 
 LANGUAGE_CODE = 'en-us'
 TIME_ZONE = 'UTC'
@@ -118,7 +118,7 @@ SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
 ALLOWED_HOSTS = ['*']
 
 # Static files (CSS, JavaScript, Images)
-# https://docs.djangoproject.com/en/1.11/howto/static-files/
+# https://docs.djangoproject.com/en/2.0/howto/static-files/
 
 STATIC_ROOT = os.path.join(PROJECT_ROOT, 'staticfiles')
 STATIC_URL = '/static/'

project_name/urls.py

 """{{ project_name }} URL Configuration
 
 The `urlpatterns` list routes URLs to views. For more information please see:
-    https://docs.djangoproject.com/en/{{ docs_version }}/topics/http/urls/
+    https://docs.djangoproject.com/en/2.0/topics/http/urls/
 Examples:
 Function views
     1. Add an import:  from my_app import views
-    2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
 Class-based views
     1. Add an import:  from other_app.views import Home
-    2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
 Including another URLconf
-    1. Import the include() function: from django.conf.urls import url, include
-    2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
-from django.conf.urls import url
+
 from django.contrib import admin
+from django.urls import path
 
 urlpatterns = [
-    url(r'^admin/', admin.site.urls),
+    path('admin/', admin.site.urls),
 ]

project_name/wsgi.py

@@ -4,7 +4,7 @@ WSGI config for {{ project_name }} project.
 It exposes the WSGI callable as a module-level variable named ``application``.
 
 For more information on this file, see
-https://docs.djangoproject.com/en/1.11/howto/deployment/wsgi/
+https://docs.djangoproject.com/en/2.0/howto/deployment/wsgi/
 """
 
 import os