diff --git a/notes/admin.py b/notes/admin.py
index 609932c..34853fa 100644
--- a/notes/admin.py
+++ b/notes/admin.py
@@ -3,6 +3,7 @@ from django.contrib import admin
 from .models import *
 # Register your models here.
 
+
 @admin.register(Sujet)
 class SujetAdmin(admin.ModelAdmin):
 
@@ -16,12 +17,11 @@ class SujetAdmin(admin.ModelAdmin):
 class NoteAdmin(admin.ModelAdmin):
 
     fieldsets = [
-        ('Contexte',
-            {'fields': ['created_by', ('created_date', 'created_time')]
-             }
-         ),
-         ('Note',
-          {'fields': ['sujet', 'text']})
+        ('Contexte', {
+                        'fields': ['created_by', ('created_date', 'created_time')]
+                        }),
+        ('Note', {
+                        'fields': ['sujet', 'text']}),
     ]
 
     list_display = ['created_date', 'sujet', 'child_class', 'text']
diff --git a/notes/models.py b/notes/models.py
index 8fcbc55..d09e774 100644
--- a/notes/models.py
+++ b/notes/models.py
@@ -1,7 +1,6 @@
 import logging
 
 from django.utils import timezone
-from django.utils.html import format_html
 from django.core.exceptions import ValidationError
 from django.urls import reverse
 
@@ -37,8 +36,6 @@ class Sujet(models.Model):
                                 blank=True, null=True
                                 )
 
-    # referent = models.ForeignKey("utilisateurs.Professionnel", related_name="suivis")
-
     def __str__(self):
         string = '%s ' % self.genre
         if self.nom:    string += '%s ' % self.nom
@@ -56,7 +53,7 @@ class Sujet(models.Model):
         if not self.id:
             from statistiques.models import FicheStatistique
             super().save(*args, **kwargs)
-            fiche = FicheStatistique.objects.create(sujet=self)
+            FicheStatistique.objects.create(sujet=self)
         else:
             return super().save(*args, **kwargs)
 
@@ -65,8 +62,7 @@ class Sujet(models.Model):
         ordering = ('surnom', 'nom', 'prenom')
 
     def get_absolute_url(self):
-        return reverse("notes:details-sujet", kwargs={"pk": self.pk })
-
+        return reverse("notes:details-sujet", kwargs={"pk": self.pk})
 
 
 class Note(models.Model):
@@ -108,7 +104,7 @@ class Note(models.Model):
         return super().save(*args, **kwargs)
 
     def __str__(self):
-        return "<%s: %s>" % (self.child_class.__qualname__, self.sujet)
+        return "<%s: %s>" % (self.child_class, self.sujet)
 
     @classmethod
     def __str__(cls):
@@ -143,7 +139,7 @@ class Note(models.Model):
         """
         self._child_instance = self
         self._child_class = self.__class__
-        if self._meta.get_parent_list(): # If self is actually child instance
+        if self._meta.get_parent_list():  # If self is actually child instance
             return
         for f in self._meta.get_fields():
             if f.is_relation and f.one_to_one:
diff --git a/statistiques/models.py b/statistiques/models.py
index 1866658..2729766 100644
--- a/statistiques/models.py
+++ b/statistiques/models.py
@@ -13,7 +13,7 @@ PARCOURS_DE_VIE_CHOICES = (
     (PARCOURS_INSTITUTIONNEL, "Parcours institutionnel"),
     )
 
-#Item: Type d'habitation
+# Item: Type d'habitation
 HABITATION_SANS = "Sans Abri"
 HABITATION_LOGEMENT = "Logement"
 HABITATION_TIERS = "Hébergement"
@@ -26,7 +26,7 @@ HABITATION_CHOICES = (
     (HABITATION_MAL_LOGEMENT, "Mal logé"),
     )
 
-#Item: Ressources
+# Item: Ressources
 RESSOURCES_RSA = "RSA"
 RESSOURCES_AAH = "AAH"
 RESSOURCES_POLE_EMPLOI = "Pôle Emploi"
@@ -42,15 +42,14 @@ RESSOURCES_CHOICES = (
     )
 
 
-
 class FicheStatistique(models.Model):
 
     sujet = models.OneToOneField('notes.Sujet',
-                          on_delete=models.CASCADE,
-                          primary_key=True,
-                          related_name="statistiques")
+                                 on_delete=models.CASCADE,
+                                 primary_key=True,
+                                 related_name="statistiques")
 
-# Logement
+    # Logement
     habitation = models.CharField("Type d'habitat", max_length=64,
                                   choices=HABITATION_CHOICES,
                                   default=NSP)
@@ -81,8 +80,7 @@ class FicheStatistique(models.Model):
                     'connu_siao', 'lien_familial', 'parcours_de_vie')
         completed = 0
         for f in observed:
-            if getattr(self, f) == None or getattr(self, f) == NSP:
-                continue
-            else:
+            if getattr(self, f) not in (None, NSP):
                 completed += 1
-        return int(completed / len(observed) * 100)
+        percentage = int(completed / len(observed) * 100)
+        return percentage
diff --git a/statistiques/views.py b/statistiques/views.py
index 0ec6ead..27404ac 100644
--- a/statistiques/views.py
+++ b/statistiques/views.py
@@ -232,7 +232,6 @@ class FrequentationStatsView(FilterMixin, generic.TemplateView):
                 contenus = list(filter(filtre, observations))
 
                 key = datetime.time(h, i * 15)
-                print("Resultat", h, ":", i*15, len(contenus))
                 data[key] = len(contenus)
 
         return data