core -- Fix flake8 errors

kfet/admin.py

@@ -1,3 +0,0 @@
-from django.contrib import admin
-
-# Register your models here.

kfet/cms/apps.py

@@ -7,4 +7,4 @@ class KFetCMSAppConfig(AppConfig):
     verbose_name = "CMS K-Fêt"
 
     def ready(self):
-        from . import hooks
+        from . import hooks  # noqa

kfet/forms.py

@@ -219,7 +219,7 @@ class CheckoutStatementCreateForm(forms.ModelForm):
             or self.cleaned_data["balance_500"] is None
         ):
             raise ValidationError(
-                "Y'a un problème. Si tu comptes la caisse, mets au moins des 0 stp (et t'as pas idée de comment c'est long de vérifier que t'as mis des valeurs de partout...)"
+                "Y'a un problème. Si tu comptes la caisse, mets au moins des 0 stp."
             )
         super().clean()
 

kfet/models.py

@@ -8,7 +8,6 @@ from django.db import models, transaction
 from django.db.models import F
 from django.urls import reverse
 from django.utils import timezone
-from django.utils.six.moves import reduce
 from django.utils.translation import ugettext_lazy as _
 
 from gestioncof.models import CofProfile
@@ -164,7 +163,7 @@ class Account(models.Model):
         pattern = re.compile("^[^a-z]{3}$")
         data["is_valid"] = pattern.match(trigramme) and True or False
         try:
-            account = Account.objects.get(trigramme=trigramme)
+            Account.objects.get(trigramme=trigramme)
         except Account.DoesNotExist:
             data["is_free"] = True
         return data

kfet/views.py

@@ -2,7 +2,6 @@ import ast
 import heapq
 import statistics
 from collections import defaultdict
-from datetime import timedelta
 from decimal import Decimal
 from urllib.parse import urlencode
 
@@ -10,12 +9,10 @@ from django.contrib import messages
 from django.contrib.auth.decorators import login_required, permission_required
 from django.contrib.auth.models import Permission, User
 from django.contrib.messages.views import SuccessMessageMixin
-from django.core.cache import cache
 from django.core.exceptions import PermissionDenied
 from django.core.urlresolvers import reverse, reverse_lazy
 from django.db import transaction
 from django.db.models import Count, F, Prefetch, Sum
-from django.db.models.functions import Coalesce
 from django.forms import formset_factory
 from django.http import Http404, JsonResponse
 from django.shortcuts import get_object_or_404, redirect, render
@@ -30,7 +27,6 @@ from kfet import consumers
 from kfet.config import kfet_config
 from kfet.decorators import teamkfet_required
 from kfet.forms import (
-    AccountBalanceForm,
     AccountForm,
     AccountNegativeForm,
     AccountNoTriForm,
@@ -80,7 +76,7 @@ from kfet.models import (
     Transfer,
     TransferGroup,
 )
-from kfet.statistic import ScaleMixin, WeekScale, last_stats_manifest, tot_ventes
+from kfet.statistic import ScaleMixin, WeekScale, last_stats_manifest
 
 from .auth.views import (  # noqa
     AccountGroupCreate,