Reorder imports and fix trailing spaces

management/commands/_import_utils.py

@@ -5,10 +5,9 @@ import json
 import time
 from collections import defaultdict
 
-from django.core.management.base import BaseCommand
 from django.apps import apps
+from django.core.management.base import BaseCommand
 from django.db import transaction
-
 from polymorphic.models import PolymorphicModel
 
 
@@ -16,6 +15,7 @@ def timed(method):
     """"
     A simple decorator to measure time elapsed in class function (hence the args[0])
     """
+
     def _timed(*args, **kw):
         ts = time.time()
         result = method(*args, **kw)