sort imports using isort. tested.

core/management/commands/dummycmd.py

@@ -1,10 +1,10 @@
 import os
 from optparse import make_option
 
-from django.db import connection
+from django.contrib.auth.models import User
 from django.core import management
 from django.core.management.base import BaseCommand, CommandError
-from django.contrib.auth.models import User
+from django.db import connection
 
 import settings