update django files to Django 2

manage.py

@@ -1,10 +1,21 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
 import os
 import sys
 
-if __name__ == "__main__":
-    os.environ["DJANGO_SETTINGS_MODULE"] = "webvirtcloud.settings"
-
-    from django.core.management import execute_from_command_line
 
+def main():
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'webvirtcloud.settings')
+    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)
+
+
+if __name__ == '__main__':
+    main()

webvirtcloud/wsgi.py

@@ -8,7 +8,9 @@ https://docs.djangoproject.com/en/2.0/howto/deployment/wsgi/
 """
 
 import os
-os.environ["DJANGO_SETTINGS_MODULE"] = "webvirtcloud.settings"
 
 from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'webvirtcloud.settings')
+
 application = get_wsgi_application()

webvirtcloud/wsgi_custom.py

@@ -6,15 +6,17 @@ It exposes the WSGI callable as a module-level variable named ``application``.
 For more information on this file, see
 https://docs.djangoproject.com/en/2.0/howto/deployment/wsgi/
 """
-import os, sys
+import os
+import sys
+
 from django.core.wsgi import get_wsgi_application
 
-# execfile('/srv/webvirtcloud/venv/bin/activate_this.py', dict(__file__='/srv/webvvirtcloud/venv/bin/activate_this.py'))
-exec(compile(open('/srv/webvirtcloud/venv/bin/activate_this.py', "rb").read(),
-             '/srv/webvirtcloud/venv/bin/activate_this.py', 'exec'))
+# execfile('/srv/webvirtcloud/venv/bin/activate_this.py', dict(__file__='/srv/webvirtcloud/venv/bin/activate_this.py'))
+exec(compile(open('/srv/webvirtcloud/venv/bin/activate', "rb").read(),
+             '/srv/webvirtcloud/venv/bin/activate', 'exec'))
 
 sys.path.append('/srv/webvirtcloud')
-os.environ["DJANGO_SETTINGS_MODULE"] = "webvirtcloud.settings"
 
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'webvirtcloud.settings')
 
 application = get_wsgi_application()