diff --git a/beat/web/accounts/api.py b/beat/web/accounts/api.py
index 1739565a9b5d2ed90b6b92b097a58d445044f3ed..b820cf32878dd3b75d671ab822b7a3578157cbde 100644
--- a/beat/web/accounts/api.py
+++ b/beat/web/accounts/api.py
@@ -583,7 +583,9 @@ class SuperviseeReValidationView(BaseUpdateSupervisionTrackFromSuperviseeView):
                 supervisee__profile__supervision_key=models.F("supervision_key"),
             )
 
-            success, error_message = perform_revalidation(request, supervisiontrack, supervisee, now)
+            success, error_message = perform_revalidation(
+                request, supervisiontrack, supervisee, now
+            )
             result = {
                 "error": error_message,
             }
diff --git a/beat/web/accounts/migrations/0012_accounts_temporary_url.py b/beat/web/accounts/migrations/0012_accounts_temporary_url.py
index 2febd0aca48c461d7b077b30c88eec2cb2492522..491cc79881553a5ea0e42a986f718dfbb62099aa 100644
--- a/beat/web/accounts/migrations/0012_accounts_temporary_url.py
+++ b/beat/web/accounts/migrations/0012_accounts_temporary_url.py
@@ -9,23 +9,62 @@ import django.db.models.deletion
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('accounts', '0011_check_all_accounts'),
+        ("accounts", "0011_check_all_accounts"),
     ]
 
     operations = [
         migrations.CreateModel(
-            name='TemporaryUrl',
+            name="TemporaryUrl",
             fields=[
-                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
-                ('status', models.CharField(choices=[('V', 'Supervisor validates supervisee'), ('Y', 'Self yearly revalidation from supervisee')], default='V', max_length=1)),
-                ('url_hash', models.CharField(max_length=32, unique=True, verbose_name='Url')),
-                ('expires', models.DateTimeField(verbose_name='Expires')),
-                ('supervision_track', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='supervisees', to='accounts.SupervisionTrack')),
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                (
+                    "status",
+                    models.CharField(
+                        choices=[
+                            ("V", "Supervisor validates supervisee"),
+                            ("Y", "Self yearly revalidation from supervisee"),
+                        ],
+                        default="V",
+                        max_length=1,
+                    ),
+                ),
+                (
+                    "url_hash",
+                    models.CharField(max_length=32, unique=True, verbose_name="Url"),
+                ),
+                ("expires", models.DateTimeField(verbose_name="Expires")),
+                (
+                    "supervision_track",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="supervisees",
+                        to="accounts.SupervisionTrack",
+                    ),
+                ),
             ],
         ),
         migrations.AlterField(
-            model_name='profile',
-            name='status',
-            field=models.CharField(choices=[('N', 'New User'), ('W', 'Waiting Validation'), ('A', 'Accepted'), ('R', 'Rejected'), ('Y', 'Yearly revalidation'), ('B', 'Blocked no supervisor')], default='B', max_length=1),
+            model_name="profile",
+            name="status",
+            field=models.CharField(
+                choices=[
+                    ("N", "New User"),
+                    ("W", "Waiting Validation"),
+                    ("A", "Accepted"),
+                    ("R", "Rejected"),
+                    ("Y", "Yearly revalidation"),
+                    ("B", "Blocked no supervisor"),
+                ],
+                default="B",
+                max_length=1,
+            ),
         ),
     ]
diff --git a/beat/web/accounts/migrations/0013_supervisee_rejection_temporary_url.py b/beat/web/accounts/migrations/0013_supervisee_rejection_temporary_url.py
index 459b9ca9cecdc022f743c59302a3cf9408fc0d4d..e2ccb4575527c557fb3e971456960ba70b6132d5 100644
--- a/beat/web/accounts/migrations/0013_supervisee_rejection_temporary_url.py
+++ b/beat/web/accounts/migrations/0013_supervisee_rejection_temporary_url.py
@@ -8,13 +8,21 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('accounts', '0012_accounts_temporary_url'),
+        ("accounts", "0012_accounts_temporary_url"),
     ]
 
     operations = [
         migrations.AlterField(
-            model_name='temporaryurl',
-            name='status',
-            field=models.CharField(choices=[('V', 'Supervisor validates supervisee'), ('Y', 'Self yearly revalidation from supervisee'), ('R', 'Supervisor rejects supervisee revalidation')], default='V', max_length=1),
+            model_name="temporaryurl",
+            name="status",
+            field=models.CharField(
+                choices=[
+                    ("V", "Supervisor validates supervisee"),
+                    ("Y", "Self yearly revalidation from supervisee"),
+                    ("R", "Supervisor rejects supervisee revalidation"),
+                ],
+                default="V",
+                max_length=1,
+            ),
         ),
     ]
diff --git a/beat/web/accounts/models.py b/beat/web/accounts/models.py
index 2444a6a243bf9045fac5ee9c98af41caa9b7df0e..a3de68edd822aa474407fa3e672648840c477900 100644
--- a/beat/web/accounts/models.py
+++ b/beat/web/accounts/models.py
@@ -42,6 +42,7 @@ TEMPORARY_URL_LENGTH = 32
 
 # ------------------------------------------------------------------------------
 
+
 class AccountSettingsManager(models.Manager):
     def get_by_natural_key(self, owner):
         return self.get(owner=owner)
diff --git a/beat/web/accounts/views.py b/beat/web/accounts/views.py
index 4e5de831aa1a4a9108c74fd2166150c9f76a6e17..ab678d0560d2d21a11c235dc59a2b72b6106189a 100644
--- a/beat/web/accounts/views.py
+++ b/beat/web/accounts/views.py
@@ -47,7 +47,6 @@ from .models import Profile
 from .models import TemporaryUrl
 
 from ..utils import mail
-from ..common.responses import BadRequestResponse
 
 import datetime
 from urllib.parse import urlparse
@@ -253,10 +252,7 @@ def perform_revalidation(request, supervisiontrack, supervisee, now):
             # Inform supervisor about supervisee revalidation
             # Possible supervisor rejection available
             parsed_url = urlparse(settings.URL_PREFIX)
-            server_address = "%s://%s" % (
-                parsed_url.scheme,
-                parsed_url.hostname,
-            )
+            server_address = "%s://%s" % (parsed_url.scheme, parsed_url.hostname,)
 
             temp_url_rejection = TemporaryUrl.objects.create_temporary_url(
                 TemporaryUrl.REJECTION, supervisiontrack
@@ -276,23 +272,21 @@ def perform_revalidation(request, supervisiontrack, supervisee, now):
                 [supervisiontrack.supervisor.email],
             )
             success = True
-            return(success, error_message)
+            return (success, error_message)
         else:
             # Track already valid
             error_message = "You don't need to revalidate at the moment, your supervision is still valid"
-            return(success, error_message)
+            return (success, error_message)
     else:
         # A pending request already exist
         error_message = "You are not able to perform this action as you already have a pending supervision request"
-        return(success, error_message)
+        return (success, error_message)
 
 
 def accept_supervisee(supervisiontrack, supervisee, now):
     supervisiontrack.is_valid = True
 
-    expiration_date_delta = datetime.timedelta(
-        days=settings.ACCOUNT_EXPIRATION_DAYS
-    )
+    expiration_date_delta = datetime.timedelta(days=settings.ACCOUNT_EXPIRATION_DAYS)
     supervisiontrack.expiration_date = now + expiration_date_delta
 
     supervisiontrack.start_date = now
@@ -321,6 +315,7 @@ def accept_supervisee(supervisiontrack, supervisee, now):
         [supervisee.email],
     )
 
+
 def generate_load_response(request, temp_url, template, parameters):
     answer = {}
     answer["template"] = template
@@ -357,7 +352,9 @@ def load_temporary_url_validation(request, hash_url):
     elif temp_url.status == TemporaryUrl.YEARREVALIDATION:
         # Supervisee re-validation
         if supervisee.profile.supervision_key is not None and now < temp_url.expires:
-            success, error_message = perform_revalidation(request, supervisiontrack, supervisee, now)
+            success, error_message = perform_revalidation(
+                request, supervisiontrack, supervisee, now
+            )
             if not success:
                 return generate_load_response(
                     request,