Fix flake8 issues

musician/urls.py

@@ -19,7 +19,7 @@ urlpatterns = [
     path('billing/', views.BillingView.as_view(), name='billing'),
     path('bills/<int:pk>/download/', views.BillDownloadView.as_view(), name='bill-download'),
     path('profile/', views.ProfileView.as_view(), name='profile'),
-    path('profile/setLang/<code>', views.ProfileSetLang, name='profile-set-lang'),
+    path('profile/setLang/<code>', views.profile_set_language, name='profile-set-lang'),
     path('address/', views.MailView.as_view(), name='address-list'),
     path('address/new/', views.MailCreateView.as_view(), name='address-create'),
     path('address/<int:pk>/', views.MailUpdateView.as_view(), name='address-update'),

musician/views.py

@@ -1,6 +1,4 @@
-from audioop import reverse
 import logging
-from os import stat
 import smtplib
 
 from django.conf import settings
@@ -8,7 +6,6 @@ from django.contrib import messages
 from django.core.exceptions import ImproperlyConfigured
 from django.core.mail import mail_managers
 from django.http import HttpResponse, HttpResponseNotFound, HttpResponseRedirect
-from django.shortcuts import render
 from django.urls import reverse_lazy
 from django.utils import translation
 from django.utils.html import format_html
@@ -21,7 +18,7 @@ from django.views.generic.edit import DeleteView, FormView
 from django.views.generic.list import ListView
 from requests.exceptions import HTTPError
 
-from . import api, get_version
+from . import get_version
 from .auth import login as auth_login
 from .auth import logout as auth_logout
 from .forms import LoginForm, MailboxChangePasswordForm, MailboxCreateForm, MailboxUpdateForm, MailForm
@@ -86,7 +83,7 @@ class DashboardView(CustomContextMixin, UserTokenRequiredMixin, TemplateView):
     def get_mailbox_usage(self, profile_type):
         allowed_mailboxes = ALLOWED_RESOURCES[profile_type]['mailbox']
         total_mailboxes = len(self.orchestra.retrieve_mailbox_list())
-        mailboxes_left =  allowed_mailboxes - total_mailboxes
+        mailboxes_left = allowed_mailboxes - total_mailboxes
 
         alert = ''
         if mailboxes_left < 0:
@@ -126,9 +123,10 @@ class ProfileView(CustomContextMixin, UserTokenRequiredMixin, TemplateView):
 
         return context
 
-def ProfileSetLang(request, code):
+
+def profile_set_language(request, code):
     # set user language as active language
-    
+
     if any(x[0] == code for x in settings.LANGUAGES):
         # http://127.0.0.1:8080/profile/setLang/es
         user_language = code
@@ -313,7 +311,6 @@ class MailingListsView(ServiceListView):
         'title': _('Mailing lists'),
     }
 
-
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
         domain_id = self.request.GET.get('domain')