Pep8 compliance on re2o

preferences/acl.py

@@ -26,6 +26,7 @@
 Here are defined some functions to check acl on the application.
 """
 
+
 def can_view(user):
     """Check if an user can view the application.
 

preferences/forms.py

@@ -44,12 +44,16 @@ class EditOptionalUserForm(ModelForm):
             prefix=prefix,
             **kwargs
         )
-        self.fields['is_tel_mandatory'].label = 'Exiger un numéro de\
-        téléphone'
-        self.fields['user_solde'].label = 'Activation du solde pour\
-        les utilisateurs'
+        self.fields['is_tel_mandatory'].label = (
+            'Exiger un numéro de téléphone'
+        )
+        self.fields['user_solde'].label = (
+            'Activation du solde pour les utilisateurs'
+        )
         self.fields['max_solde'].label = 'Solde maximum'
-        self.fields['min_online_payment'].label = 'Montant de rechargement minimum en ligne'
+        self.fields['min_online_payment'].label = (
+            'Montant de rechargement minimum en ligne'
+        )
         self.fields['self_adhesion'].label = 'Auto inscription'
 
 
@@ -162,7 +166,6 @@ class EditAssoOptionForm(ModelForm):
         return cleaned_data
 
 
-
 class EditMailMessageOptionForm(ModelForm):
     """Formulaire d'edition des messages de bienvenue personnalisés"""
     class Meta:

preferences/models.py

@@ -36,6 +36,7 @@ from django.core.cache import cache
 from .aes_field import AESEncryptedField
 from re2o.mixins import AclMixin
 
+
 class PreferencesModel(models.Model):
     @classmethod
     def set_in_cache(cls):
@@ -46,7 +47,7 @@ class PreferencesModel(models.Model):
     @classmethod
     def get_cached_value(cls, key):
         instance = cache.get(cls().__class__.__name__.lower())
-        if instance == None:
+        if instance is None:
             instance = cls.set_in_cache()
         return getattr(instance, key)
 
@@ -146,7 +147,7 @@ class OptionalMachine(AclMixin, PreferencesModel):
 
     @cached_property
     def ipv6(self):
-         return not self.get_cached_value('ipv6_mode') == 'DISABLED'
+        return not self.get_cached_value('ipv6_mode') == 'DISABLED'
 
     class Meta:
         permissions = (
@@ -230,7 +231,7 @@ class GeneralOption(AclMixin, PreferencesModel):
         blank=True,
     )
     GTU = models.FileField(
-        upload_to = '',
+        upload_to='',
         default="",
         null=True,
         blank=True,

preferences/urls.py

@@ -73,7 +73,7 @@ urlpatterns = [
         r'^history/(?P<object_name>\w+)/(?P<object_id>[0-9]+)$',
         re2o.views.history,
         name='history',
-        kwargs={'application':'preferences'},
+        kwargs={'application': 'preferences'},
         ),
     url(r'^$', views.display_options, name='display-options'),
 ]

preferences/views.py

@@ -128,7 +128,7 @@ def add_service(request):
         messages.success(request, "Ce service a été ajouté")
         return redirect(reverse('preferences:display-options'))
     return form(
-        {'preferenceform': service, 'action_name' : 'Ajouter'},
+        {'preferenceform': service, 'action_name': 'Ajouter'},
         'preferences/preferences.html',
         request
         )
@@ -151,7 +151,7 @@ def edit_service(request, service_instance, serviceid):
         messages.success(request, "Service modifié")
         return redirect(reverse('preferences:display-options'))
     return form(
-        {'preferenceform': service, 'action_name' : 'Editer'},
+        {'preferenceform': service, 'action_name': 'Editer'},
         'preferences/preferences.html',
         request
     )
@@ -175,7 +175,7 @@ def del_services(request, instances):
                 suivant %s ne peut être supprimé" % services_del)
         return redirect(reverse('preferences:display-options'))
     return form(
-        {'preferenceform': services, 'action_name' : 'Supprimer'},
+        {'preferenceform': services, 'action_name': 'Supprimer'},
         'preferences/preferences.html',
         request
     )

re2o/__init__.py

@@ -20,4 +20,3 @@
 # You should have received a copy of the GNU General Public License along
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-

re2o/contributors.py

 #!/usr/bin/env python3
 
-CONTRIBUTORS = ['Gabriel "Chirac" Détraz', 'Maël "MoaMoaK" Kervella', 'Hugo "Klafyvel" Levy--Falk', 'Augustin "Dahlaro" Lemesle', 'Goulven "Lhark" Kermarec', 'Guillaume "Guimoz" Goessel', 'Yoann "Nanoy" Pietri', 'Matthieu "Lebanni" Michelet', 'Arthur "Grizzly" Grisel-Davy', 'Simon "Rezatoune" Brélivet', 'Sellem Lev-Arcady', 'David "5-1" Sinquin', 'Pierre "Redstorm" Cadart', 'Éloi "Goslig" Alain', 'Laouen "Volgarr" Fernet', 'Joanne Steiner', '"Krokmou"', 'Thibault "Tipunchetrhum" de Boutray', 'Baptiste "B" Fournier', 'Daniel "Dstan" Stan', 'Hugo "Shaka" Hervieux', '"Mikachu"', 'Thomas "Nymous" Gaudin', '"Esum"']
+CONTRIBUTORS = [
+    'Gabriel "Chirac" Détraz',
+    'Maël "MoaMoaK" Kervella',
+    'Hugo "Klafyvel" Levy--Falk',
+    'Augustin "Dahlaro" Lemesle',
+    'Goulven "Lhark" Kermarec',
+    'Guillaume "Guimoz" Goessel',
+    'Yoann "Nanoy" Pietri',
+    'Matthieu "Lebanni" Michelet',
+    'Arthur "Grizzly" Grisel-Davy',
+    'Simon "Rezatoune" Brélivet',
+    'Sellem Lev-Arcady',
+    'David "5-1" Sinquin',
+    'Pierre "Redstorm" Cadart',
+    'Éloi "Goslig" Alain',
+    'Laouen "Volgarr" Fernet',
+    'Joanne Steiner',
+    '"Krokmou"',
+    'Thibault "Tipunchetrhum" de Boutray',
+    'Baptiste "B" Fournier',
+    'Daniel "Dstan" Stan',
+    'Hugo "Shaka" Hervieux',
+    '"Mikachu"',
+    'Thomas "Nymous" Gaudin',
+    '"Esum"'
+]

re2o/field_permissions.py

@@ -43,13 +43,15 @@ class FieldPermissionModelMixin:
                 if result is not None:
                     return result
             else:
-                result = user.has_perm(perm)  # Don't supply 'obj', or else infinite recursion.
+                # Don't supply 'obj', or else infinite recursion.
+                result = user.has_perm(perm)
                 if result:
                     return True
 
         # If no requirement can be met, then permission is denied.
         return False
 
+
 class FieldPermissionModel(FieldPermissionModelMixin, models.Model):
     class Meta:
         abstract = True
@@ -76,4 +78,3 @@ class FieldPermissionFormMixin:
 
 class FieldPermissionForm(FieldPermissionFormMixin, forms.ModelForm):
     pass
-

re2o/management/commands/gen_contrib.py

@@ -20,18 +20,23 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 """
-Write in a python file the list of all contributors sorted by number of commits.
-This list is extracted from the FedeRez gitlab repository.
+Write in a python file the list of all contributors sorted by number of
+commits. This list is extracted from the current gitlab repository.
 """
 
 from django.core.management.base import BaseCommand, CommandError
 import os
 
+
 class Command(BaseCommand):
-    help = 'Update contributors list' 
+    help = 'Update contributors list'
 
     def handle(self, *args, **options):
-        contributeurs = [item.split('\t')[1] for item in os.popen("git shortlog -s -n").read().split("\n") if '\t' in item]
+        contributeurs = [
+            item.split('\t')[1]
+            for item in os.popen("git shortlog -s -n").read().split("\n")
+            if '\t' in item
+        ]
         self.stdout.write(self.style.SUCCESS("Exportation Sucessfull"))
         with open("re2o/contributors.py", "w") as contrib_file:
             contrib_file.write("#!/usr/bin/env python3\n")

re2o/mixins.py

@@ -37,9 +37,15 @@ class RevMixin(object):
 class FormRevMixin(object):
     def save(self, *args, **kwargs):
         if reversion.get_comment() != "" and self.changed_data != []:
-            reversion.set_comment(reversion.get_comment() + ",%s" % ', '.join(field for field in self.changed_data))
+            reversion.set_comment(
+                reversion.get_comment() + ",%s"
+                % ', '.join(field for field in self.changed_data)
+            )
         elif self.changed_data:
-            reversion.set_comment("Champs modifié(s) : %s" % ', '.join(field for field in self.changed_data))
+            reversion.set_comment(
+                "Champs modifié(s) : %s"
+                % ', '.join(field for field in self.changed_data)
+            )
         return super(FormRevMixin, self).save(*args, **kwargs)
 
 
@@ -47,12 +53,16 @@ class AclMixin(object):
     """This mixin is used in nearly every class/models defined in re2o apps.
     It is used by acl, in models (decorators can_...) and in templates tags
     :get_instance: Applied on a class, take an id argument, return an instance
-    :can_create: Applied on a class, take the requested user, return if the user
-    can do the creation
-    :can_edit: Applied on an instance, return if the user can edit the instance
-    :can_delete: Applied on an instance, return if the user can delete the instance
-    :can_view: Applied on an instance, return if the user can view the instance
-    :can_view_all: Applied on a class, return if the user can view all instances"""
+    :can_create: Applied on a class, take the requested user, return if the
+        user can do the creation
+    :can_edit: Applied on an instance, return if the user can edit the
+        instance
+    :can_delete: Applied on an instance, return if the user can delete the
+        instance
+    :can_view: Applied on an instance, return if the user can view the
+        instance
+    :can_view_all: Applied on a class, return if the user can view all
+        instances"""
 
     @classmethod
     def get_classname(cls):
@@ -76,8 +86,12 @@ class AclMixin(object):
         un object
         :param user_request: instance utilisateur qui fait la requête
         :return: soit True, soit False avec la raison de l'échec"""
-        return user_request.has_perm(cls.get_modulename() + '.add_' + cls.get_classname()), u"Vous n'avez pas le droit\
-            de créer un " + cls.get_classname()
+        return (
+            user_request.has_perm(
+                cls.get_modulename() + '.add_' + cls.get_classname()
+            ),
+            u"Vous n'avez pas le droit de créer un " + cls.get_classname()
+        )
 
     def can_edit(self, user_request, *args, **kwargs):
         """Verifie que l'user a les bons droits pour editer
@@ -85,7 +99,12 @@ class AclMixin(object):
         :param self: Instance à editer
         :param user_request: Utilisateur qui fait la requête
         :return: soit True, soit False avec la raison de l'échec"""
-        return user_request.has_perm(self.get_modulename() + '.change_' + self.get_classname()), u"Vous n'avez pas le droit d'éditer des " + self.get_classname()
+        return (
+            user_request.has_perm(
+                self.get_modulename() + '.change_' + self.get_classname()
+            ),
+            u"Vous n'avez pas le droit d'éditer des " + self.get_classname()
+        )
 
     def can_delete(self, user_request, *args, **kwargs):
         """Verifie que l'user a les bons droits pour delete
@@ -93,7 +112,12 @@ class AclMixin(object):
         :param self: Instance à delete
         :param user_request: Utilisateur qui fait la requête
         :return: soit True, soit False avec la raison de l'échec"""
-        return user_request.has_perm(self.get_modulename() + '.delete_' + self.get_classname()), u"Vous n'avez pas le droit d'éditer des " + self.get_classname()
+        return (
+            user_request.has_perm(
+                self.get_modulename() + '.delete_' + self.get_classname()
+            ),
+            u"Vous n'avez pas le droit d'éditer des " + self.get_classname()
+        )
 
     @classmethod
     def can_view_all(cls, user_request, *args, **kwargs):
@@ -101,7 +125,12 @@ class AclMixin(object):
         droit particulier view objet correspondant
         :param user_request: instance user qui fait l'edition
         :return: True ou False avec la raison de l'échec le cas échéant"""
-        return user_request.has_perm(cls.get_modulename() + '.view_' + cls.get_classname()), u"Vous n'avez pas le droit de voir des " + cls.get_classname()
+        return (
+            user_request.has_perm(
+                cls.get_modulename() + '.view_' + cls.get_classname()
+            ),
+            u"Vous n'avez pas le droit de voir des " + cls.get_classname()
+        )
 
     def can_view(self, user_request, *args, **kwargs):
         """Vérifie qu'on peut bien voir cette instance particulière avec
@@ -109,4 +138,9 @@ class AclMixin(object):
         :param self: instance à voir
         :param user_request: instance user qui fait l'edition
         :return: True ou False avec la raison de l'échec le cas échéant"""
-        return user_request.has_perm(self.get_modulename() + '.view_' + self.get_classname()), u"Vous n'avez pas le droit de voir des " + self.get_classname()
+        return (
+            user_request.has_perm(
+                self.get_modulename() + '.view_' + self.get_classname()
+            ),
+            u"Vous n'avez pas le droit de voir des " + self.get_classname()
+        )

re2o/script_utils.py

@@ -19,15 +19,11 @@
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
-import os, sys, pwd
+import os
+import sys
+import pwd
 
-proj_path="/var/www/re2o"
-os.environ.setdefault("DJANGO_SETTINGS_MODULE","re2o.settings")
-sys.path.append(proj_path)
-os.chdir(proj_path)
 from django.core.wsgi import get_wsgi_application
-application = get_wsgi_application()
-
 
 from django.core.management.base import CommandError
 from users.models import User
@@ -37,14 +33,22 @@ from reversion import revisions as reversion
 from django.db import transaction
 from getpass import getpass
 
+proj_path = "/var/www/re2o"
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "re2o.settings")
+sys.path.append(proj_path)
+os.chdir(proj_path)
+
+application = get_wsgi_application()
+
 
 def get_user(pseudo):
     """Cherche un utilisateur re2o à partir de son pseudo"""
     user = User.objects.filter(pseudo=pseudo)
-    if len(user)==0:
+    if len(user) == 0:
         raise CommandError("Utilisateur invalide")
-    if len(user)>1:
-        raise CommandError("Plusieurs utilisateurs correspondant à ce pseudo. Ceci NE DEVRAIT PAS arriver")
+    if len(user) > 1:
+        raise CommandError("Plusieurs utilisateurs correspondant à ce "
+                           "pseudo. Ceci NE DEVRAIT PAS arriver")
     return user[0]
 
 
@@ -53,7 +57,7 @@ def get_system_user():
     return pwd.getpwuid(int(os.getenv("SUDO_UID") or os.getuid())).pw_name
 
 
-def form_cli(Form,user,action,*args,**kwargs):
+def form_cli(Form, user, action, *args, **kwargs):
     """
     Remplit un formulaire à partir de la ligne de commande
         Form : le formulaire (sous forme de classe) à remplir
@@ -61,26 +65,30 @@ def form_cli(Form,user,action,*args,**kwargs):
         action : l'action réalisée par le formulaire (pour les logs)
     Les arguments suivants sont transmis tels quels au formulaire.
     """
-    data={}
-    dumb_form = Form(user=user,*args,**kwargs)
+    data = {}
+    dumb_form = Form(user=user, *args, **kwargs)
     for key in dumb_form.fields:
-        if not dumb_form.fields[key].widget.input_type=='hidden':
-            if dumb_form.fields[key].widget.input_type=='password':
-                data[key]=getpass("%s : " % dumb_form.fields[key].label)
+        if not dumb_form.fields[key].widget.input_type == 'hidden':
+            if dumb_form.fields[key].widget.input_type == 'password':
+                data[key] = getpass("%s : " % dumb_form.fields[key].label)
             else:
-                data[key]=input("%s : " % dumb_form.fields[key].label)
+                data[key] = input("%s : " % dumb_form.fields[key].label)
 
-    form = Form(data,user=user,*args,**kwargs)
+    form = Form(data, user=user, *args, **kwargs)
     if not form.is_valid():
         sys.stderr.write("Erreurs : \n")
         for err in form.errors:
-            #Oui, oui, on gère du HTML là où d'autres ont eu la lumineuse idée de le mettre
-            sys.stderr.write("\t%s : %s\n" % (err,strip_tags(form.errors[err])))
+            # Oui, oui, on gère du HTML là où d'autres ont eu la
+            # lumineuse idée de le mettre
+            sys.stderr.write(
+                "\t%s : %s\n" % (err, strip_tags(form.errors[err]))
+            )
         raise CommandError("Formulaire invalide")
 
     with transaction.atomic(), reversion.create_revision():
-       form.save()
-       reversion.set_user(user)
-       reversion.set_comment(action)
+        form.save()
+        reversion.set_user(user)
+        reversion.set_comment(action)
 
-    sys.stdout.write("%s : effectué. La modification peut prendre quelques minutes pour s'appliquer.\n" % action)
+    sys.stdout.write("%s : effectué. La modification peut prendre "
+                     "quelques minutes pour s'appliquer.\n" % action)

re2o/settings.py

@@ -126,7 +126,7 @@ LANGUAGE_CODE = 'en'
 # Proritary location search for translations
 # then searches in {app}/locale/ for app in INSTALLED_APPS
 LOCALE_PATHS = [
-    BASE_DIR + '/templates/locale/' # to define translations outside of apps
+    BASE_DIR + '/templates/locale/'  # For translations outside of apps
 ]
 
 TIME_ZONE = 'Europe/Paris'

re2o/settings_local.example.py

@@ -73,23 +73,22 @@ EMAIL_PORT = MY_EMAIL_PORT
 
 # Reglages pour la bdd ldap
 LDAP = {
-    'base_user_dn' : 'cn=Utilisateurs,dc=example,dc=org',
-    'base_userservice_dn' : 'ou=service-users,dc=example,dc=org',
-    'base_usergroup_dn' : 'ou=posix,ou=groups,dc=example,dc=org',
-    'base_userservicegroup_dn' : 'ou=services,ou=groups,dc=example,dc=org',
-    'user_gid' : 500,
+    'base_user_dn': 'cn=Utilisateurs,dc=example,dc=org',
+    'base_userservice_dn': 'ou=service-users,dc=example,dc=org',
+    'base_usergroup_dn': 'ou=posix,ou=groups,dc=example,dc=org',
+    'base_userservicegroup_dn': 'ou=services,ou=groups,dc=example,dc=org',
+    'user_gid': 500,
     }
 
 
 UID_RANGES = {
-    'users' : [21001,30000],
-    'service-users' : [20000,21000],
+    'users': [21001, 30000],
+    'service-users': [20000, 21000],
 }
 
 # Chaque groupe a un gid assigné, voici la place libre pour assignation
 GID_RANGES = {
-    'posix' : [501, 600],
+    'posix': [501, 600],
 }
 
 OPTIONNAL_APPS = ()
-

re2o/templatetags/__init__.py

@@ -18,4 +18,3 @@
 # You should have received a copy of the GNU General Public License along
 # with this program; if not, write to the Free Software Foundation, Inc.,
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-

re2o/templatetags/acl.py

@@ -85,32 +85,32 @@ register = template.Library()
 
 MODEL_NAME = {
     # cotisations
-    'Facture' : cotisations.models.Facture,
-    'Vente' : cotisations.models.Vente,
-    'Article' : cotisations.models.Article,
-    'Banque' : cotisations.models.Banque,
-    'Paiement' : cotisations.models.Paiement,
-    'Cotisation' : cotisations.models.Cotisation,
+    'Facture': cotisations.models.Facture,
+    'Vente': cotisations.models.Vente,
+    'Article': cotisations.models.Article,
+    'Banque': cotisations.models.Banque,
+    'Paiement': cotisations.models.Paiement,
+    'Cotisation': cotisations.models.Cotisation,
     # machines
-    'Machine' : machines.models.Machine,
-    'MachineType' : machines.models.MachineType,
-    'IpType' : machines.models.IpType,
-    'Vlan' : machines.models.Vlan,
-    'Nas' : machines.models.Nas,
-    'SOA' : machines.models.SOA,
-    'Extension' : machines.models.Extension,
-    'Mx' : machines.models.Mx,
-    'Ns' : machines.models.Ns,
-    'Txt' : machines.models.Txt,
-    'Srv' : machines.models.Srv,
-    'Interface' : machines.models.Interface,
-    'Domain' : machines.models.Domain,
-    'IpList' : machines.models.IpList,
-    'Ipv6List' : machines.models.Ipv6List,
-    'machines.Service' : machines.models.Service,
-    'Service_link' : machines.models.Service_link,
-    'OuverturePortList' : machines.models.OuverturePortList,
-    'OuverturePort' : machines.models.OuverturePort,
+    'Machine': machines.models.Machine,
+    'MachineType': machines.models.MachineType,
+    'IpType': machines.models.IpType,
+    'Vlan': machines.models.Vlan,
+    'Nas': machines.models.Nas,
+    'SOA': machines.models.SOA,
+    'Extension': machines.models.Extension,
+    'Mx': machines.models.Mx,
+    'Ns': machines.models.Ns,
+    'Txt': machines.models.Txt,
+    'Srv': machines.models.Srv,
+    'Interface': machines.models.Interface,
+    'Domain': machines.models.Domain,
+    'IpList': machines.models.IpList,
+    'Ipv6List': machines.models.Ipv6List,
+    'machines.Service': machines.models.Service,
+    'Service_link': machines.models.Service_link,
+    'OuverturePortList': machines.models.OuverturePortList,
+    'OuverturePort': machines.models.OuverturePort,
     # preferences
     'OptionalUser': preferences.models.OptionalUser,
     'OptionalMachine': preferences.models.OptionalMachine,
@@ -120,25 +120,25 @@ MODEL_NAME = {
     'AssoOption': preferences.models.AssoOption,
     'MailMessageOption': preferences.models.MailMessageOption,
     # topologie
-    'Stack' : topologie.models.Stack,
-    'Switch' : topologie.models.Switch,
-    'AccessPoint' : topologie.models.AccessPoint,
-    'ModelSwitch' : topologie.models.ModelSwitch,
-    'ConstructorSwitch' : topologie.models.ConstructorSwitch,
-    'Port' : topologie.models.Port,
-    'Room' : topologie.models.Room,
-    'Building' : topologie.models.Building,
-    'SwitchBay' : topologie.models.SwitchBay,
+    'Stack': topologie.models.Stack,
+    'Switch': topologie.models.Switch,
+    'AccessPoint': topologie.models.AccessPoint,
+    'ModelSwitch': topologie.models.ModelSwitch,
+    'ConstructorSwitch': topologie.models.ConstructorSwitch,
+    'Port': topologie.models.Port,
+    'Room': topologie.models.Room,
+    'Building': topologie.models.Building,
+    'SwitchBay': topologie.models.SwitchBay,
     # users
-    'User' : users.models.User,
-    'Adherent' : users.models.Adherent,
-    'Club' : users.models.Club,
-    'ServiceUser' : users.models.ServiceUser,
-    'School' : users.models.School,
-    'ListRight' : users.models.ListRight,
-    'ListShell' : users.models.ListShell,
-    'Ban' : users.models.Ban,
-    'Whitelist' : users.models.Whitelist,
+    'User': users.models.User,
+    'Adherent': users.models.Adherent,
+    'Club': users.models.Club,
+    'ServiceUser': users.models.ServiceUser,
+    'School': users.models.School,
+    'ListRight': users.models.ListRight,
+    'ListShell': users.models.ListShell,
+    'Ban': users.models.Ban,
+    'Whitelist': users.models.Whitelist,
 }
 
 
@@ -184,17 +184,41 @@ def get_callback(tag_name, obj=None):
     if tag_name == 'cannot_view_all':
         return acl_fct(obj.can_view_all, True)
     if tag_name == 'can_view_app':
-        return acl_fct(lambda x : (not any(not sys.modules[o].can_view(x) for o in obj), None), False)
+        return acl_fct(
+            lambda x: (
+                not any(not sys.modules[o].can_view(x) for o in obj),
+                None
+            ),
+            False
+        )
     if tag_name == 'cannot_view_app':
-        return acl_fct(lambda x : (not any(not sys.modules[o].can_view(x) for o in obj), None), True)
+        return acl_fct(
+            lambda x: (
+                not any(not sys.modules[o].can_view(x) for o in obj),
+                None
+            ),
+            True
+        )
     if tag_name == 'can_edit_history':
-        return acl_fct(lambda user:(user.has_perm('admin.change_logentry'),None),False)
+        return acl_fct(
+            lambda user: (user.has_perm('admin.change_logentry'), None),
+            False
+        )
     if tag_name == 'cannot_edit_history':
-        return acl_fct(lambda user:(user.has_perm('admin.change_logentry'),None),True)
+        return acl_fct(
+            lambda user: (user.has_perm('admin.change_logentry'), None),
+            True
+        )
     if tag_name == 'can_view_any_app':
-        return acl_fct(lambda x : (any(sys.modules[o].can_view(x) for o in obj), None), False)
+        return acl_fct(
+            lambda x: (any(sys.modules[o].can_view(x) for o in obj), None),
+            False
+        )
     if tag_name == 'cannot_view_any_app':
-        return acl_fct(lambda x : (any(sys.modules[o].can_view(x) for o in obj), None), True)
+        return acl_fct(
+            lambda x: (any(sys.modules[o].can_view(x) for o in obj), None),
+            True
+        )
 
     raise template.TemplateSyntaxError(
         "%r tag is not a valid can_xxx tag" % tag_name
@@ -246,11 +270,11 @@ def acl_app_filter(parser, token):
         tag_name, *app_name = token.split_contents()
     except ValueError:
         raise template.TemplateSyntaxError(
-            "%r tag require 1 argument : an application"
+            "%r tag require 1 argument: an application"
             % token.contents.split()[0]
         )
     for name in app_name:
-        if not name in sys.modules.keys():
+        if name not in sys.modules.keys():
             raise template.TemplateSyntaxError(