fix flake8 error

Author: tmszi

Diff for: apps/aklub/urls.py

@@ -1,7 +1,7 @@
 from aklub import views
 
-from django.contrib.auth.decorators import login_required
 from django.conf.urls import url
+from django.contrib.auth.decorators import login_required
 from django.urls import path
 
 from . import tasks # noqa

Diff for: apps/aklub/utils.py

@@ -1,8 +1,8 @@
 # -*- coding: utf-8 -*-
 
 import os
-from operator import itemgetter
 import pathlib
+from operator import itemgetter
 
 from django.db import models