diff --git a/apps/activity/api/views.py b/apps/activity/api/views.py
index 651560fdcea7a843d47b26963f4b9816448f2cf6..76b2b3336d8b92eba92ca99f47e699848d3298c2 100644
--- a/apps/activity/api/views.py
+++ b/apps/activity/api/views.py
@@ -3,8 +3,8 @@
 
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import SearchFilter
-
 from api.viewsets import ReadProtectedModelViewSet
+
 from .serializers import ActivityTypeSerializer, ActivitySerializer, GuestSerializer
 from ..models import ActivityType, Activity, Guest
 
diff --git a/apps/api/urls.py b/apps/api/urls.py
index 40e6c572737980f8bc241af4304bb3fdeea5f342..b275a0b87665464550f57ae7ea1dcdb943370183 100644
--- a/apps/api/urls.py
+++ b/apps/api/urls.py
@@ -8,7 +8,6 @@ from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework import routers, serializers
 from rest_framework.filters import SearchFilter
 from rest_framework.viewsets import ReadOnlyModelViewSet
-
 from activity.api.urls import register_activity_urls
 from api.viewsets import ReadProtectedModelViewSet
 from member.api.urls import register_members_urls
diff --git a/apps/api/viewsets.py b/apps/api/viewsets.py
index c700339faf977f039734a032dc5689955c0a50a0..5380489d268f15f599c08c145069c8ac6fb79d8f 100644
--- a/apps/api/viewsets.py
+++ b/apps/api/viewsets.py
@@ -4,7 +4,6 @@
 from django.contrib.contenttypes.models import ContentType
 from member.backends import PermissionBackend
 from rest_framework import viewsets
-
 from note_kfet.middlewares import get_current_authenticated_user
 
 
diff --git a/apps/logs/api/views.py b/apps/logs/api/views.py
index 6bd4f72171e01bab959765d148a069b1271cd8de..b3b9b166fb94c2ada7f66a5a8cbcbb42da425187 100644
--- a/apps/logs/api/views.py
+++ b/apps/logs/api/views.py
@@ -3,8 +3,8 @@
 
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import OrderingFilter
-
 from api.viewsets import ReadOnlyProtectedModelViewSet
+
 from .serializers import ChangelogSerializer
 from ..models import Changelog
 
diff --git a/apps/logs/signals.py b/apps/logs/signals.py
index 0c80a4cd66daf4cb40c8769c25ca8ec4f17d1f12..a7cf9a4767d50cc76166ac5dc7216c4c4f52d9e0 100644
--- a/apps/logs/signals.py
+++ b/apps/logs/signals.py
@@ -4,12 +4,10 @@
 from django.contrib.contenttypes.models import ContentType
 from rest_framework.renderers import JSONRenderer
 from rest_framework.serializers import ModelSerializer
-
 import getpass
-
 from note.models import NoteUser, Alias
-
 from note_kfet.middlewares import get_current_authenticated_user, get_current_ip
+
 from .models import Changelog
 
 
diff --git a/apps/member/api/views.py b/apps/member/api/views.py
index b4715caee269a9ab58a7292c86af71daac330886..57c216a139a32d499dac1678e347e626c63c1ab5 100644
--- a/apps/member/api/views.py
+++ b/apps/member/api/views.py
@@ -2,8 +2,8 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 from rest_framework.filters import SearchFilter
-
 from api.viewsets import ReadProtectedModelViewSet
+
 from .serializers import ProfileSerializer, ClubSerializer, RoleSerializer, MembershipSerializer
 from ..models import Profile, Club, Role, Membership
 
diff --git a/apps/member/backends.py b/apps/member/backends.py
index 90dc70f8e11daac7964cbf3a7eef67e64ffaa585..b0e026f8df836af3cecb50bebaa36ccc64dd03ae 100644
--- a/apps/member/backends.py
+++ b/apps/member/backends.py
@@ -1,15 +1,15 @@
 # Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+from django.contrib.auth.backends import ModelBackend
 from django.contrib.auth.models import User
 from django.contrib.contenttypes.models import ContentType
 from django.db.models import Q, F
-
 from note.models import Note, NoteUser, NoteClub, NoteSpecial
 from note_kfet.middlewares import get_current_session
 from permission.models import Permission
+
 from .models import Membership, Club
-from django.contrib.auth.backends import ModelBackend
 
 
 class PermissionBackend(ModelBackend):
@@ -53,9 +53,6 @@ class PermissionBackend(ModelBackend):
         :return: A query that corresponds to the filter to give to a queryset
         """
 
-        from time import time
-        ti = time()
-
         if user.is_superuser and get_current_session().get("permission_mask", 0) >= 42:
             # Superusers have all rights
             return Q()
diff --git a/apps/member/forms.py b/apps/member/forms.py
index 0f1ff1896f9ecb4820d6e2d073b7430479b358a2..5f2d58388f3e4bd1eb3c427a9649ebb224cd82bb 100644
--- a/apps/member/forms.py
+++ b/apps/member/forms.py
@@ -8,8 +8,8 @@ from dal import autocomplete
 from django import forms
 from django.contrib.auth.forms import UserCreationForm, AuthenticationForm
 from django.contrib.auth.models import User
-
 from permission.models import PermissionMask
+
 from .models import Profile, Club, Membership
 
 
diff --git a/apps/member/models.py b/apps/member/models.py
index 1a9bcee28af18e35369a274d11b1059b2d3bd5ef..c22d37d41392acaa66e7ff0997c6e1bbc9f89942 100644
--- a/apps/member/models.py
+++ b/apps/member/models.py
@@ -54,7 +54,6 @@ class Profile(models.Model):
         return reverse('user_detail', args=(self.pk,))
 
 
-
 class Club(models.Model):
     """
     A club is a group of people, whose membership is handle by their
@@ -164,6 +163,7 @@ class Membership(models.Model):
         verbose_name_plural = _('memberships')
         indexes = [models.Index(fields=['user'])]
 
+
 class RolePermissions(models.Model):
     """
     Permissions associated with a Role
@@ -180,13 +180,3 @@ class RolePermissions(models.Model):
 
     def __str__(self):
         return str(self.role)
-
-
-# @receiver(post_save, sender=settings.AUTH_USER_MODEL)
-# def save_user_profile(instance, created, **_kwargs):
-#     """
-#     Hook to save an user profile when an user is updated
-#     """
-#     if created:
-#         Profile.objects.create(user=instance)
-#     instance.profile.save()
diff --git a/apps/member/views.py b/apps/member/views.py
index 3b19503beb52b97c486c1225f4fd4e71a08f778f..8e4fff08b249e6d737e1fb16f1968d9a619564fc 100644
--- a/apps/member/views.py
+++ b/apps/member/views.py
@@ -24,8 +24,8 @@ from note.forms import AliasForm, ImageForm
 from note.models import Alias, NoteUser
 from note.models.transactions import Transaction
 from note.tables import HistoryTable, AliasTable
-from .backends import PermissionBackend
 
+from .backends import PermissionBackend
 from .filters import UserFilter, UserFilterFormHelper
 from .forms import SignUpForm, ProfileForm, ClubForm, MembershipForm, MemberFormSet, FormSetHelper, \
     CustomAuthenticationForm
diff --git a/apps/note/api/serializers.py b/apps/note/api/serializers.py
index 5e82c89e47911f993178a12bbee1cbda682f770a..528f88106709a020b2fa77e664f322f000f22ee1 100644
--- a/apps/note/api/serializers.py
+++ b/apps/note/api/serializers.py
@@ -4,8 +4,6 @@
 from rest_framework import serializers
 from rest_polymorphic.serializers import PolymorphicSerializer
 
-from member.backends import PermissionBackend
-from note_kfet.middlewares import get_current_authenticated_user
 from ..models.notes import Note, NoteClub, NoteSpecial, NoteUser, Alias
 from ..models.transactions import TransactionTemplate, Transaction, MembershipTransaction, TemplateCategory, \
     RecurrentTransaction, SpecialTransaction
@@ -83,9 +81,6 @@ class AliasSerializer(serializers.ModelSerializer):
         fields = '__all__'
         read_only_fields = ('note', )
 
-    def get_note(self, alias):
-        return alias.note.id
-
 
 class NotePolymorphicSerializer(PolymorphicSerializer):
     model_serializer_mapping = {
diff --git a/apps/note/api/views.py b/apps/note/api/views.py
index f4bf5668847514673834b662ec206e1d7a316ba0..eaf6cd37968f3429e667a638466cae2b5c24abb6 100644
--- a/apps/note/api/views.py
+++ b/apps/note/api/views.py
@@ -4,8 +4,8 @@
 from django.db.models import Q
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import OrderingFilter, SearchFilter
-
 from api.viewsets import ReadProtectedModelViewSet, ReadOnlyProtectedModelViewSet
+
 from .serializers import NotePolymorphicSerializer, AliasSerializer, TemplateCategorySerializer, \
     TransactionTemplateSerializer, TransactionPolymorphicSerializer
 from ..models.notes import Note, Alias
diff --git a/apps/note/views.py b/apps/note/views.py
index c9905dd27a8ecb6e6320a63423267caa9d53739a..0b94066625dae8b5d20ed4ad8e225a432c6d460b 100644
--- a/apps/note/views.py
+++ b/apps/note/views.py
@@ -8,8 +8,8 @@ from django.db.models import Q
 from django.utils.translation import gettext_lazy as _
 from django.views.generic import CreateView, ListView, UpdateView
 from django_tables2 import SingleTableView
-
 from member.backends import PermissionBackend
+
 from .forms import TransactionTemplateForm
 from .models import Transaction, TransactionTemplate, Alias, RecurrentTransaction, NoteSpecial
 from .models.transactions import SpecialTransaction
@@ -27,9 +27,9 @@ class TransactionCreate(LoginRequiredMixin, SingleTableView):
     table_pagination = {"per_page": 50}
 
     def get_queryset(self):
-        return Transaction.objects.filter(PermissionBackend
-                                          .filter_queryset(self.request.user, Transaction, "view")) \
-                                            .order_by("-id").all()[:50]
+        return Transaction.objects.filter(PermissionBackend.filter_queryset(
+            self.request.user, Transaction, "view")
+        ).order_by("-id").all()[:50]
 
     def get_context_data(self, **kwargs):
         """
@@ -137,9 +137,9 @@ class ConsoView(LoginRequiredMixin, SingleTableView):
         """
         context = super().get_context_data(**kwargs)
         from django.db.models import Count
-        buttons = TransactionTemplate.objects.filter(PermissionBackend()
-                                                     .filter_queryset(self.request.user, TransactionTemplate, "view")) \
-            .filter(display=True).annotate(clicks=Count('recurrenttransaction')).order_by('category__name', 'name')
+        buttons = TransactionTemplate.objects.filter(
+            PermissionBackend().filter_queryset(self.request.user, TransactionTemplate, "view")
+        ).filter(display=True).annotate(clicks=Count('recurrenttransaction')).order_by('category__name', 'name')
         context['transaction_templates'] = buttons
         context['most_used'] = buttons.order_by('-clicks', 'name')[:10]
         context['title'] = _("Consumptions")