__str__ is not needed

cms/models.py

@@ -36,10 +36,10 @@ class Enseignant(models.Model):
         return '{0} {1}'.format(self.nom, self.prenom)
     
     def descr(self):
-        return '{0} (<a href="mailto:{1}">{2}</A>)'.format(self.__str__(), self.email, self.email)
+        return '{0} (<a href="mailto:{1}">{2}</A>)'.format(self, self.email, self.email)
 
     def descr_pdf(self):
-        return '{0} ({1})'.format(self.__str__(), self.email)
+        return '{0} ({1})'.format(self, self.email)
     
     
 class Domaine(models.Model):

cms/tests.py

@@ -1,12 +1,10 @@
 import os
 
-from django.db.models import Sum, F
-
 from django.conf import settings
 from django.contrib.auth.models import User
 from django.core import mail
-
-from django.test import TestCase, Client
+from django.db.models import Sum, F
+from django.test import TestCase
 from django.urls import reverse
 
 from cms.models import Domaine, Processus, Module