Typos, pep8 et company.

cotisations/models.py

@@ -221,7 +221,7 @@ class Facture(RevMixin, AclMixin, FieldPermissionModelMixin, models.Model):
 
     @staticmethod
     def can_create(user_request, *_args, **_kwargs):
-        """Check if an user can create an invoice.
+        """Check if a user can create an invoice.
 
         :param user_request: The user who wants to create an invoice.
         :return: a message and a boolean which is True if the user can create

cotisations/views.py

@@ -101,13 +101,16 @@ def new_facture(request, user, userid):
     # Building the invocie form and the article formset
     is_self_subscription = False
     can_create_invoice = request.user.has_perm('cotisations.add_facture')
-    allow_self_subscription = OptionalUser.get_cached_value('allow_self_subscription')
+    allow_self_subscription = OptionalUser.get_cached_value(
+        'allow_self_subscription')
     if not can_create_invoice:
         if allow_self_subscription:
             is_self_subscription = True
             article_list = article_list.filter(allow_self_subscription=True)
-            allowed_payment = Paiement.objects.filter(allow_self_subscription=True)
-            invoice_form = NewFactureForm(request.POST or None, instance=invoice, allowed_payment=allowed_payment)
+            allowed_payment = Paiement.objects.filter(
+                allow_self_subscription=True)
+            invoice_form = NewFactureForm(
+                request.POST or None, instance=invoice, allowed_payment=allowed_payment)
         else:
             messages.error(
                 request,
@@ -165,7 +168,6 @@ def new_facture(request, user, userid):
                         ))
             new_invoice_instance.save()
 
-
             # Building a purchase for each article sold
             for art_item in articles:
                 if art_item.cleaned_data:

users/templates/users/profil.html

@@ -287,7 +287,8 @@ non adhérent</span>{% endif %} et votre connexion est {% if users.has_access %}
                 {% if user_solde %}
                 <a class="btn btn-primary btn-sm" role="button" href="{% url 'cotisations:new_facture_solde' user.id %}">
                     <i class="fa fa-euro-sign"></i>
-                    Ajouter une cotisation par solde</a>
+                    Ajouter une cotisation par solde
+                </a>
                 {% endif %}
                 {% acl_end %}
             </div>