Fix some linting, some complex functions are remaining

apps/activity/tests/test_activities.py

@@ -7,7 +7,6 @@ from django.contrib.auth.models import User
 from django.test import TestCase
 from django.urls import reverse
 from django.utils import timezone
-
 from activity.models import Activity, ActivityType, Guest, Entry
 from member.models import Club
 

apps/note/tables.py

@@ -46,7 +46,8 @@ class HistoryTable(tables.Table):
         }
     )
 
-    created_at = tables.DateTimeColumn(format='Y-m-d H:i:s',
+    created_at = tables.DateTimeColumn(
+        format='Y-m-d H:i:s',
         attrs={
             "td": {
                 "class": "text-nowrap",

apps/treasury/tests/test_treasury.py

@@ -7,7 +7,6 @@ from django.core.exceptions import ValidationError
 from django.db.models import Q
 from django.test import TestCase
 from django.urls import reverse
-
 from member.models import Membership, Club
 from note.models import SpecialTransaction, NoteSpecial, Transaction
 from treasury.models import Invoice, Product, Remittance, RemittanceType, SogeCredit