Pep8 compliance on cotisations

cotisations/acl.py

@@ -27,6 +27,7 @@ Here are defined some functions to check acl on the application.
 """
 from django.utils.translation import ugettext as _
 
+
 def can_view(user):
     """Check if an user can view the application.
 
@@ -38,4 +39,7 @@ def can_view(user):
         viewing is granted and msg is a message (can be None).
     """
     can = user.has_module_perms('cotisations')
-    return can, None if can else _("You don't have the rights to see this application.")
+    if can:
+        return can, None
+    else:
+        return can, _("You don't have the rights to see this application.")

cotisations/forms.py

@@ -38,7 +38,7 @@ from __future__ import unicode_literals
 from django import forms
 from django.db.models import Q
 from django.forms import ModelForm, Form
-from django.core.validators import MinValueValidator,MaxValueValidator
+from django.core.validators import MinValueValidator, MaxValueValidator
 from django.utils.translation import ugettext as _
 from django.utils.translation import ugettext_lazy as _l
 
@@ -49,6 +49,7 @@ from users.models import User
 from re2o.field_permissions import FieldPermissionFormMixin
 from re2o.mixins import FormRevMixin
 
+
 class NewFactureForm(FormRevMixin, ModelForm):
     """
     Form used to create a new invoice by using a payment method, a bank and a
@@ -109,12 +110,16 @@ class CreditSoldeForm(NewFactureForm):
     montant = forms.DecimalField(max_digits=5, decimal_places=2, required=True)
 
 
-class SelectUserArticleForm(FormRevMixin, Form):
+class SelectUserArticleForm(
+        FormRevMixin, Form):
     """
-    Form used to select an article during the creation of an invoice for a member.
+    Form used to select an article during the creation of an invoice for a
+    member.
     """
     article = forms.ModelChoiceField(
-        queryset=Article.objects.filter(Q(type_user='All') | Q(type_user='Adherent')),
+        queryset=Article.objects.filter(
+            Q(type_user='All') | Q(type_user='Adherent')
+        ),
         label=_l("Article"),
         required=True
     )
@@ -127,10 +132,13 @@ class SelectUserArticleForm(FormRevMixin, Form):
 
 class SelectClubArticleForm(Form):
     """
-    Form used to select an article during the creation of an invoice for a club.
+    Form used to select an article during the creation of an invoice for a
+    club.
     """
     article = forms.ModelChoiceField(
-        queryset=Article.objects.filter(Q(type_user='All') | Q(type_user='Club')),
+        queryset=Article.objects.filter(
+            Q(type_user='All') | Q(type_user='Club')
+        ),
         label=_l("Article"),
         required=True
     )
@@ -140,6 +148,7 @@ class SelectClubArticleForm(Form):
         required=True
     )
 
+
 # TODO : change Facture to Invoice
 class NewFactureFormPdf(Form):
     """
@@ -147,9 +156,18 @@ class NewFactureFormPdf(Form):
     """
     paid = forms.BooleanField(label=_l("Paid"), required=False)
     # TODO : change dest field to recipient
-    dest = forms.CharField(required=True, max_length=255, label=_l("Recipient"))
+    dest = forms.CharField(
+        required=True,
+        max_length=255,
+        label=_l("Recipient")
+    )
     # TODO : change chambre field to address
-    chambre = forms.CharField(required=False, max_length=10, label=_l("Address"))
+    chambre = forms.CharField(
+        required=False,
+        max_length=10,
+        label=_l("Address")
+    )
+
 
 # TODO : change Facture to Invoice
 class EditFactureForm(FieldPermissionFormMixin, NewFactureForm):
@@ -313,7 +331,6 @@ class NewFactureSoldeForm(NewFactureForm):
         # TODO : change paiement to payment and baque to bank
         fields = ['paiement', 'banque']
 
-
     def clean(self):
         cleaned_data = super(NewFactureSoldeForm, self).clean()
         # TODO : change paiement to payment
@@ -342,7 +359,7 @@ class RechargeForm(FormRevMixin, Form):
     value = forms.FloatField(
         label=_l("Amount"),
         min_value=0.01,
-        validators = []
+        validators=[]
     )
 
     def __init__(self, *args, **kwargs):
@@ -360,7 +377,8 @@ class RechargeForm(FormRevMixin, Form):
                     )
                 }
             )
-        if value + self.user.solde > OptionalUser.get_cached_value('max_solde'):
+        if value + self.user.solde > \
+                OptionalUser.get_cached_value('max_solde'):
             raise forms.ValidationError(
                 _("Requested amount is too high. Your balance can't exceed \
                 %(max_online_balance)s €.") % {

cotisations/models.py

@@ -105,11 +105,16 @@ class Facture(RevMixin, AclMixin, FieldPermissionModelMixin, models.Model):
         abstract = False
         permissions = (
             # TODO : change facture to invoice
-            ('change_facture_control', _l("Can change the \"controlled\" state")),
+            ('change_facture_control',
-            # TODO : seems more likely to be call create_facture_pdf or create_invoice_pdf
+                _l("Can change the \"controlled\" state")),
-            ('change_facture_pdf', _l("Can create a custom PDF invoice")),
+            # TODO : seems more likely to be call create_facture_pdf
-            ('view_facture', _l("Can see an invoice's details")),
+            # or create_invoice_pdf
-            ('change_all_facture', _l("Can edit all the previous invoices")),
+            ('change_facture_pdf',
+                _l("Can create a custom PDF invoice")),
+            ('view_facture',
+                _l("Can see an invoice's details")),
+            ('change_all_facture',
+                _l("Can edit all the previous invoices")),
         )
         verbose_name = _l("Invoice")
         verbose_name_plural = _l("Invoices")
@@ -159,11 +164,14 @@ class Facture(RevMixin, AclMixin, FieldPermissionModelMixin, models.Model):
     def can_edit(self, user_request, *args, **kwargs):
         if not user_request.has_perm('cotisations.change_facture'):
             return False, _("You don't have the right to edit an invoice.")
-        elif not user_request.has_perm('cotisations.change_all_facture') and not self.user.can_edit(user_request, *args, **kwargs)[0]:
+        elif not user_request.has_perm('cotisations.change_all_facture') and \
-            return False, _("You don't have the right to edit this user's invoices.")
+                not self.user.can_edit(user_request, *args, **kwargs)[0]:
-        elif not user_request.has_perm('cotisations.change_all_facture') and\
+            return False, _("You don't have the right to edit this user's "
+                            "invoices.")
+        elif not user_request.has_perm('cotisations.change_all_facture') and \
                 (self.control or not self.valid):
-            return False, _("You don't have the right to edit an invoice already controlled or invalidated.")
+            return False, _("You don't have the right to edit an invoice "
+                            "already controlled or invalidated.")
         else:
             return True, None
 
@@ -171,16 +179,19 @@ class Facture(RevMixin, AclMixin, FieldPermissionModelMixin, models.Model):
         if not user_request.has_perm('cotisations.delete_facture'):
             return False, _("You don't have the right to delete an invoice.")
         if not self.user.can_edit(user_request, *args, **kwargs)[0]:
-            return False, _("You don't have the right to delete this user's invoices.")
+            return False, _("You don't have the right to delete this user's "
+                            "invoices.")
         if self.control or not self.valid:
-            return False, _("You don't have the right to delete an invoice already controlled or invalidated.")
+            return False, _("You don't have the right to delete an invoice "
+                            "already controlled or invalidated.")
         else:
             return True, None
 
     def can_view(self, user_request, *args, **kwargs):
-        if not user_request.has_perm('cotisations.view_facture') and\
+        if not user_request.has_perm('cotisations.view_facture') and \
                 self.user != user_request:
-            return False, _("You don't have the right to see someone else's invoices history.")
+            return False, _("You don't have the right to see someone else's "
+                            "invoices history.")
         elif not self.valid:
             return False, _("The invoice has been invalidated.")
         else:
@@ -188,16 +199,22 @@ class Facture(RevMixin, AclMixin, FieldPermissionModelMixin, models.Model):
 
     @staticmethod
     def can_change_control(user_request, *args, **kwargs):
-        return user_request.has_perm('cotisations.change_facture_control'), _("You don't have the right to edit the \"controlled\" state.")
+        return (
+            user_request.has_perm('cotisations.change_facture_control'),
+            _("You don't have the right to edit the \"controlled\" state.")
+        )
 
     @staticmethod
     def can_change_pdf(user_request, *args, **kwargs):
-        return user_request.has_perm('cotisations.change_facture_pdf'), _("You don't have the right to edit an invoice.")
+        return (
+            user_request.has_perm('cotisations.change_facture_pdf'),
+            _("You don't have the right to edit an invoice.")
+        )
 
     def __init__(self, *args, **kwargs):
         super(Facture, self).__init__(*args, **kwargs)
         self.field_permissions = {
-            'control' : self.can_change_control,
+            'control': self.can_change_control,
         }
 
     def __str__(self):
@@ -289,7 +306,6 @@ class Vente(RevMixin, AclMixin, models.Model):
         verbose_name = _l("Purchase")
         verbose_name_plural = _l("Purchases")
 
-
     # TODO : change prix_total to total_price
     def prix_total(self):
         """
@@ -323,11 +339,13 @@ class Vente(RevMixin, AclMixin, models.Model):
                         facture__in=Facture.objects.filter(
                             user=self.facture.user
                         ).exclude(valid=False))
-                    ).filter(Q(type_cotisation='All') | Q(type_cotisation=self.type_cotisation)
+                    ).filter(
+                        Q(type_cotisation='All') |
+                        Q(type_cotisation=self.type_cotisation)
                     ).filter(
                         date_start__lt=date_start
                     ).aggregate(Max('date_end'))['date_end__max']
-            elif self.type_cotisation=="Adhesion":
+            elif self.type_cotisation == "Adhesion":
                 end_cotisation = self.facture.user.end_adhesion()
             else:
                 end_cotisation = self.facture.user.end_connexion()
@@ -357,11 +375,15 @@ class Vente(RevMixin, AclMixin, models.Model):
     def can_edit(self, user_request, *args, **kwargs):
         if not user_request.has_perm('cotisations.change_vente'):
             return False, _("You don't have the right to edit the purchases.")
-        elif not user_request.has_perm('cotisations.change_all_facture') and not self.facture.user.can_edit(user_request, *args, **kwargs)[0]:
+        elif not user_request.has_perm('cotisations.change_all_facture') and \
-            return False, _("You don't have the right to edit this user's purchases.")
+                not self.facture.user.can_edit(
-        elif not user_request.has_perm('cotisations.change_all_vente') and\
+                    user_request, *args, **kwargs)[0]:
+            return False, _("You don't have the right to edit this user's "
+                            "purchases.")
+        elif not user_request.has_perm('cotisations.change_all_vente') and \
                 (self.facture.control or not self.facture.valid):
-            return False, _("You don't have the right to edit a purchase already controlled or invalidated.")
+            return False, _("You don't have the right to edit a purchase "
+                            "already controlled or invalidated.")
         else:
             return True, None
 
@@ -369,16 +391,19 @@ class Vente(RevMixin, AclMixin, models.Model):
         if not user_request.has_perm('cotisations.delete_vente'):
             return False, _("You don't have the right to delete a purchase.")
         if not self.facture.user.can_edit(user_request, *args, **kwargs)[0]:
-            return False, _("You don't have the right to delete this user's purchases.")
+            return False, _("You don't have the right to delete this user's "
+                            "purchases.")
         if self.facture.control or not self.facture.valid:
-            return False, _("You don't have the right to delete a purchase already controlled or invalidated.")
+            return False, _("You don't have the right to delete a purchase "
+                            "already controlled or invalidated.")
         else:
             return True, None
 
     def can_view(self, user_request, *args, **kwargs):
-        if not user_request.has_perm('cotisations.view_vente') and\
+        if not user_request.has_perm('cotisations.view_vente') and \
                 self.facture.user != user_request:
-            return False, _("You don't have the right to see someone else's purchase history.")
+            return False, _("You don't have the right to see someone "
+                            "else's purchase history.")
         else:
             return True, None
 
@@ -418,12 +443,14 @@ def vente_post_delete(sender, **kwargs):
 
 class Article(RevMixin, AclMixin, models.Model):
     """
-    The definition of an article model. It represents an type of object that can be sold to the user.
+    The definition of an article model. It represents a type of object
+    that can be sold to the user.
 
     It's represented by:
         * a name
         * a price
-        * a cotisation type (indicating if this article reprensents a cotisation or not)
+        * a cotisation type (indicating if this article reprensents a
+            cotisation or not)
         * a duration (if it is a cotisation)
         * a type of user (indicating what kind of user can buy this article)
     """
@@ -513,8 +540,8 @@ class Banque(RevMixin, AclMixin, models.Model):
         permissions = (
             ('view_banque', _l("Can see a bank's details")),
         )
-        verbose_name=_l("Bank")
+        verbose_name = _l("Bank")
-        verbose_name_plural=_l("Banks")
+        verbose_name_plural = _l("Banks")
 
     def __str__(self):
         return self.name
@@ -622,24 +649,29 @@ class Cotisation(RevMixin, AclMixin, models.Model):
     def can_edit(self, user_request, *args, **kwargs):
         if not user_request.has_perm('cotisations.change_cotisation'):
             return False, _("You don't have the right to edit a cotisation.")
-        elif not user_request.has_perm('cotisations.change_all_cotisation') and\
+        elif not user_request.has_perm('cotisations.change_all_cotisation') \
-            (self.vente.facture.control or not self.vente.facture.valid):
+                and (self.vente.facture.control or
-            return False, _("You don't have the right to edit a cotisation already controlled or invalidated.")
+                     not self.vente.facture.valid):
+            return False, _("You don't have the right to edit a cotisation "
+                            "already controlled or invalidated.")
         else:
             return True, None
 
     def can_delete(self, user_request, *args, **kwargs):
         if not user_request.has_perm('cotisations.delete_cotisation'):
-            return False, _("You don't have the right to delete a cotisation.")
+            return False, _("You don't have the right to delete a "
+                            "cotisation.")
         if self.vente.facture.control or not self.vente.facture.valid:
-            return False, _("You don't have the right to delete a cotisation already controlled or invalidated.")
+            return False, _("You don't have the right to delete a cotisation "
+                            "already controlled or invalidated.")
         else:
             return True, None
 
     def can_view(self, user_request, *args, **kwargs):
         if not user_request.has_perm('cotisations.view_cotisation') and\
                 self.vente.facture.user != user_request:
-            return False, _("You don't have the right to see someone else's cotisation history.")
+            return False, _("You don't have the right to see someone else's "
+                            "cotisation history.")
         else:
             return True, None
 

cotisations/payment.py

@@ -17,6 +17,7 @@ from preferences.models import AssoOption
 from .models import Facture
 from .payment_utils.comnpay import Payment as ComnpayPayment
 
+
 @csrf_exempt
 @login_required
 def accept_payment(request, factureid):
@@ -30,7 +31,10 @@ def accept_payment(request, factureid):
             'amount': facture.prix()
         }
     )
-    return redirect(reverse('users:profil', kwargs={'userid':request.user.id}))
+    return redirect(reverse(
+        'users:profil',
+        kwargs={'userid': request.user.id}
+    ))
 
 
 @csrf_exempt
@@ -43,7 +47,11 @@ def refuse_payment(request):
         request,
         _("The payment has been refused.")
     )
-    return redirect(reverse('users:profil', kwargs={'userid':request.user.id}))
+    return redirect(reverse(
+        'users:profil',
+        kwargs={'userid': request.user.id}
+    ))
+
 
 @csrf_exempt
 def ipn(request):
@@ -105,7 +113,7 @@ def comnpay(facture, request):
         str(AssoOption.get_cached_value('payment_pass')),
         'https://' + host + reverse(
             'cotisations:accept_payment',
-            kwargs={'factureid':facture.id}
+            kwargs={'factureid': facture.id}
         ),
         'https://' + host + reverse('cotisations:refuse_payment'),
         'https://' + host + reverse('cotisations:ipn'),
@@ -113,20 +121,20 @@ def comnpay(facture, request):
         "D"
     )
     r = {
-        'action' : 'https://secure.homologation.comnpay.com',
+        'action': 'https://secure.homologation.comnpay.com',
-        'method' : 'POST',
+        'method': 'POST',
-        'content' : p.buildSecretHTML(
+        'content': p.buildSecretHTML(
             "Rechargement du solde",
             facture.prix(),
             idTransaction=str(facture.id)
         ),
-        'amount' : facture.prix,
+        'amount': facture.prix,
     }
     return r
 
 
 # The payment systems supported by re2o
 PAYMENT_SYSTEM = {
-    'COMNPAY' : comnpay,
+    'COMNPAY': comnpay,
-    'NONE' : None
+    'NONE': None
 }

cotisations/payment_utils/comnpay.py

@@ -5,6 +5,7 @@ import hashlib
 from collections import OrderedDict
 from itertools import chain
 
+
 class Payment():
 
     vad_number = ""
@@ -15,7 +16,8 @@ class Payment():
     source = ""
     typeTr = "D"
 
-    def __init__(self, vad_number = "", secret_key = "", urlRetourOK = "", urlRetourNOK = "", urlIPN = "", source="", typeTr="D"):
+    def __init__(self, vad_number="", secret_key="", urlRetourOK="",
+                 urlRetourNOK="", urlIPN="", source="", typeTr="D"):
         self.vad_number = vad_number
         self.secret_key = secret_key
         self.urlRetourOK = urlRetourOK
@@ -24,36 +26,45 @@ class Payment():
         self.source = source
         self.typeTr = typeTr
 
-    def buildSecretHTML(self, produit="Produit", montant="0.00", idTransaction=""):
+    def buildSecretHTML(self, produit="Produit", montant="0.00",
+                        idTransaction=""):
         if idTransaction == "":
-            self.idTransaction = str(time.time())+self.vad_number+str(randrange(999))
+            self.idTransaction = str(time.time())
+            self.idTransaction += self.vad_number
+            self.idTransaction += str(randrange(999))
         else:
             self.idTransaction = idTransaction
 
         array_tpe = OrderedDict(
-                montant= str(montant),
+                montant=str(montant),
-                idTPE= self.vad_number,
+                idTPE=self.vad_number,
-                idTransaction= self.idTransaction,
+                idTransaction=self.idTransaction,
-                devise= "EUR",
+                devise="EUR",
-                lang= 'fr',
+                lang='fr',
-                nom_produit= produit,
+                nom_produit=produit,
-                source= self.source,
+                source=self.source,
-                urlRetourOK= self.urlRetourOK,
+                urlRetourOK=self.urlRetourOK,
-                urlRetourNOK= self.urlRetourNOK,
+                urlRetourNOK=self.urlRetourNOK,
-                typeTr= str(self.typeTr)
+                typeTr=str(self.typeTr)
         )
 
-        if self.urlIPN!="":
+        if self.urlIPN != "":
             array_tpe['urlIPN'] = self.urlIPN
 
-        array_tpe['key'] = self.secret_key;
+        array_tpe['key'] = self.secret_key
-        strWithKey = base64.b64encode(bytes('|'.join(array_tpe.values()), 'utf-8'))
+        strWithKey = base64.b64encode(bytes(
+            '|'.join(array_tpe.values()),
+            'utf-8'
+        ))
         del array_tpe["key"]
         array_tpe['sec'] = hashlib.sha512(strWithKey).hexdigest()
 
         ret = ""
         for key in array_tpe:
-            ret += '<input type="hidden" name="'+key+'" value="'+array_tpe[key]+'"/>'
+            ret += '<input type="hidden" name="{k}" value="{v}"/>'.format(
+                'k'=key,
+                'v'=array_type[key]
+            )
 
         return ret
 
@@ -61,8 +72,10 @@ class Payment():
         if "sec" in values:
             sec = values['sec']
             del values["sec"]
-            strWithKey = hashlib.sha512(base64.b64encode(bytes('|'.join(values.values()) +"|"+secret_key, 'utf-8'))).hexdigest()
+            strWithKey = hashlib.sha512(base64.b64encode(bytes(
+                '|'.join(values.values()) + "|" + secret_key,
+                'utf-8'
+            ))).hexdigest()
             return strWithKey.upper() == sec.upper()
         else:
             return False
-

cotisations/tex.py

@@ -54,9 +54,12 @@ def render_invoice(request, ctx={}):
         str(ctx['DATE'].day),
     ])
     r = render_tex(request, 'cotisations/factures.tex', ctx)
-    r['Content-Disposition'] = ''.join(['attachment; filename="',filename,'.pdf"']) 
+    r['Content-Disposition'] = 'attachment; filename="{name}.pdf"'.format(
+        name=filename
+    )
     return r
 
+
 def render_tex(request, template, ctx={}):
     """
     Creates a PDF from a LaTex templates using pdflatex.
@@ -71,8 +74,8 @@ def render_tex(request, template, ctx={}):
         for i in range(2):
             process = Popen(
                 ['pdflatex', '-output-directory', tempdir],
-                stdin = PIPE,
+                stdin=PIPE,
-                stdout = PIPE,
+                stdout=PIPE,
             )
             process.communicate(rendered_tpl)
         with open(os.path.join(tempdir, 'texput.pdf'), 'rb') as f:

cotisations/urls.py

@@ -101,11 +101,10 @@ urlpatterns = [
         views.index_paiement,
         name='index-paiement'
         ),
-    url(
+    url(r'history/(?P<object_name>\w+)/(?P<object_id>[0-9]+)$',
-        r'history/(?P<object_name>\w+)/(?P<object_id>[0-9]+)$',
         re2o.views.history,
         name='history',
-        kwargs={'application':'cotisations'},
+        kwargs={'application': 'cotisations'},
         ),
     url(r'^control/$',
         views.control,

cotisations/views.py

@@ -77,7 +77,6 @@ from . import payment as online_payment
 from .tex import render_invoice
 
 
-
 @login_required
 @can_create(Facture)
 @can_edit(User)
@@ -102,9 +101,13 @@ def new_facture(request, user, userid):
     # Building the invocie form and the article formset
     invoice_form = NewFactureForm(request.POST or None, instance=invoice)
     if request.user.is_class_club:
-        article_formset = formset_factory(SelectClubArticleForm)(request.POST or None)
+        article_formset = formset_factory(SelectClubArticleForm)(
+            request.POST or None
+        )
     else:
-        article_formset = formset_factory(SelectUserArticleForm)(request.POST or None)
+        article_formset = formset_factory(SelectUserArticleForm)(
+            request.POST or None
+        )
 
     if invoice_form.is_valid() and article_formset.is_valid():
         new_invoice_instance = invoice_form.save(commit=False)
@@ -118,15 +121,18 @@ def new_facture(request, user, userid):
             # the authorized minimum (negative_balance)
             if user_balance:
                 # TODO : change Paiement to Payment
-                if new_invoice_instance.paiement == Paiement.objects.get_or_create(
+                if new_invoice_instance.paiement == (
-                        moyen='solde'
+                    Paiement.objects.get_or_create(moyen='solde')[0]
-                )[0]:
+                ):
                     total_price = 0
                     for art_item in articles:
                         if art_item.cleaned_data:
-                            total_price += art_item.cleaned_data['article']\
+                            total_price += (
-                                    .prix*art_item.cleaned_data['quantity']
+                                art_item.cleaned_data['article'].prix *
-                    if float(user.solde) - float(total_price) < negative_balance:
+                                art_item.cleaned_data['quantity']
+                            )
+                    if (float(user.solde) - float(total_price)
+                            < negative_balance):
                         messages.error(
                             request,
                             _("Your balance is too low for this operation.")
@@ -205,9 +211,13 @@ def new_facture_pdf(request):
     # Building the invocie form and the article formset
     invoice_form = NewFactureFormPdf(request.POST or None)
     if request.user.is_class_club:
-        articles_formset = formset_factory(SelectClubArticleForm)(request.POST or None)
+        articles_formset = formset_factory(SelectClubArticleForm)(
+            request.POST or None
+        )
     else:
-        articles_formset = formset_factory(SelectUserArticleForm)(request.POST or None)
+        articles_formset = formset_factory(SelectUserArticleForm)(
+            request.POST or None
+        )
     if invoice_form.is_valid() and articles_formset.is_valid():
         # Get the article list and build an list out of it
         # contiaining (article_name, article_price, quantity, total_price)
@@ -303,7 +313,11 @@ def edit_facture(request, facture, factureid):
     can be set as desired. This is also the view used to invalidate
     an invoice.
     """
-    invoice_form = EditFactureForm(request.POST or None, instance=facture, user=request.user)
+    invoice_form = EditFactureForm(
+        request.POST or None,
+        instance=facture,
+        user=request.user
+    )
     purchases_objects = Vente.objects.filter(facture=facture)
     purchase_form_set = modelformset_factory(
         Vente,
@@ -311,7 +325,10 @@ def edit_facture(request, facture, factureid):
         extra=0,
         max_num=len(purchases_objects)
         )
-    purchase_form = purchase_form_set(request.POST or None, queryset=purchases_objects)
+    purchase_form = purchase_form_set(
+        request.POST or None,
+        queryset=purchases_objects
+    )
     if invoice_form.is_valid() and purchase_form.is_valid():
         if invoice_form.changed_data:
             invoice_form.save()
@@ -613,7 +630,8 @@ def control(request):
     View used to control the invoices all at once.
     """
     pagination_number = GeneralOption.get_cached_value('pagination_number')
-    invoice_list = Facture.objects.select_related('user').select_related('paiement')
+    invoice_list = (Facture.objects.select_related('user').
+                    select_related('paiement'))
     invoice_list = SortTable.sort(
         invoice_list,
         request.GET.get('col'),
@@ -725,9 +743,13 @@ def new_facture_solde(request, userid):
         Q(type_user='All') | Q(type_user=request.user.class_name)
     )
     if request.user.is_class_club:
-        article_formset = formset_factory(SelectClubArticleForm)(request.POST or None)
+        article_formset = formset_factory(SelectClubArticleForm)(
+            request.POST or None
+        )
     else:
-        article_formset = formset_factory(SelectUserArticleForm)(request.POST or None)
+        article_formset = formset_factory(SelectUserArticleForm)(
+            request.POST or None
+        )
 
     if article_formset.is_valid():
         articles = article_formset
@@ -826,7 +848,9 @@ def recharge(request):
     refill_form = RechargeForm(request.POST or None, user=request.user)
     if refill_form.is_valid():
         invoice = Facture(user=request.user)
-        payment, _created = Paiement.objects.get_or_create(moyen='Rechargement en ligne')
+        payment, _created = Paiement.objects.get_or_create(
+            moyen='Rechargement en ligne'
+        )
         invoice.paiement = payment
         invoice.valid = False
         invoice.save()
@@ -837,7 +861,9 @@ def recharge(request):
             number=1
         )
         purchase.save()
-        content = online_payment.PAYMENT_SYSTEM[AssoOption.get_cached_value('payment')](invoice, request)
+        content = online_payment.PAYMENT_SYSTEM[
+            AssoOption.get_cached_value('payment')
+        ](invoice, request)
         return render(request, 'cotisations/payment.html', content)
     return form({
         'rechargeform': refill_form