diff --git a/bda/algorithm.py b/bda/algorithm.py
index 830ef119..add09335 100644
--- a/bda/algorithm.py
+++ b/bda/algorithm.py
@@ -1,7 +1,5 @@
 import random
 
-from django.db.models import Max
-
 
 class Algorithm(object):
 
diff --git a/bda/management/commands/manage_reventes.py b/bda/management/commands/manage_reventes.py
index 52d25252..bd25a28e 100644
--- a/bda/management/commands/manage_reventes.py
+++ b/bda/management/commands/manage_reventes.py
@@ -9,7 +9,9 @@ from bda.models import SpectacleRevente
 
 
 class Command(BaseCommand):
-    help = "Envoie les mails de notification et effectue " "les tirages au sort des reventes"
+    help = (
+        "Envoie les mails de notification et effectue les tirages au sort des reventes"
+    )
     leave_locale_alone = True
 
     def handle(self, *args, **options):
diff --git a/bda/management/commands/sendrappels.py b/bda/management/commands/sendrappels.py
index 33f85330..65026736 100644
--- a/bda/management/commands/sendrappels.py
+++ b/bda/management/commands/sendrappels.py
@@ -11,7 +11,10 @@ from bda.models import Spectacle
 
 
 class Command(BaseCommand):
-    help = "Envoie les mails de rappel des spectacles dont la date " "approche.\nNe renvoie pas les mails déjà envoyés."
+    help = (
+        "Envoie les mails de rappel des spectacles dont la date approche.\n"
+        "Ne renvoie pas les mails déjà envoyés."
+    )
     leave_locale_alone = True
 
     def handle(self, *args, **options):
diff --git a/bda/models.py b/bda/models.py
index bd4ea4cb..9ac38a41 100644
--- a/bda/models.py
+++ b/bda/models.py
@@ -98,7 +98,7 @@ class Spectacle(models.Model):
         """
         try:
             return self.image.url
-        except:
+        except Exception:
             return None
 
     def send_rappel(self):
diff --git a/bda/tests/test_revente.py b/bda/tests/test_revente.py
index b0d69dc7..202e9494 100644
--- a/bda/tests/test_revente.py
+++ b/bda/tests/test_revente.py
@@ -1,7 +1,7 @@
 from datetime import timedelta
 
 from django.contrib.auth.models import User
-from django.test import Client, TestCase
+from django.test import TestCase
 from django.utils import timezone
 
 from bda.models import (
diff --git a/gestioncof/apps.py b/gestioncof/apps.py
index b132366a..88e2fbfc 100644
--- a/gestioncof/apps.py
+++ b/gestioncof/apps.py
@@ -6,7 +6,7 @@ class GestioncofConfig(AppConfig):
     verbose_name = "Gestion des adhérents du COF"
 
     def ready(self):
-        from . import signals
+        from . import signals  # noqa
 
         self.register_config()
 
diff --git a/gestioncof/decorators.py b/gestioncof/decorators.py
index fe5a7ccc..ef811730 100644
--- a/gestioncof/decorators.py
+++ b/gestioncof/decorators.py
@@ -5,7 +5,7 @@ def is_cof(user):
     try:
         profile = user.profile
         return profile.is_cof
-    except:
+    except Exception:
         return False
 
 
@@ -16,7 +16,7 @@ def is_buro(user):
     try:
         profile = user.profile
         return profile.is_buro
-    except:
+    except Exception:
         return False
 
 
diff --git a/gestioncof/shared.py b/gestioncof/shared.py
index 87e19842..1a5bd32e 100644
--- a/gestioncof/shared.py
+++ b/gestioncof/shared.py
@@ -2,8 +2,6 @@ from django.conf import settings
 from django.contrib.sites.models import Site
 from django_cas_ng.backends import CASBackend
 
-from gestioncof.models import CofProfile
-
 
 class COFCASBackend(CASBackend):
     def clean_username(self, username):
diff --git a/kfet/admin.py b/kfet/admin.py
deleted file mode 100644
index 8c38f3f3..00000000
--- a/kfet/admin.py
+++ /dev/null
@@ -1,3 +0,0 @@
-from django.contrib import admin
-
-# Register your models here.
diff --git a/kfet/cms/apps.py b/kfet/cms/apps.py
index d4928ac6..d675cbb5 100644
--- a/kfet/cms/apps.py
+++ b/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
diff --git a/kfet/forms.py b/kfet/forms.py
index b253fd67..e314d80c 100644
--- a/kfet/forms.py
+++ b/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()
 
diff --git a/kfet/models.py b/kfet/models.py
index 6b16505e..5a8ea858 100644
--- a/kfet/models.py
+++ b/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
diff --git a/kfet/views.py b/kfet/views.py
index 088f867e..a2a69930 100644
--- a/kfet/views.py
+++ b/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,