optimize imports and reformat code according to pep8

accounts_ext/admin.py

@@ -1,7 +1,7 @@
 from django.contrib import admin
 from django.contrib.auth import get_user_model
-from django.contrib.auth.models import Group as GroupBase
 from django.contrib.auth.admin import UserAdmin as BaseUserAdmin, GroupAdmin
+from django.contrib.auth.models import Group as GroupBase
 from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _
 from import_export import resources
@@ -10,7 +10,6 @@ from rangefilter.filter import DateTimeRangeFilter
 
 from core.admin import SafeModelAdmin
 from referral.admin import ReferralAdminInline
-
 from .forms import UserChangeForm, UserCreationForm
 from .models import Profile, Company, Group
 

accounts_ext/forms.py

@@ -1,13 +1,9 @@
 import logging
+
 from crispy_forms.helper import FormHelper
 from crispy_forms.layout import Layout, Field, Div, Submit, HTML
 from django import forms
-from django.conf import settings
 from django.contrib.auth import get_user_model, password_validation
-from django.urls import reverse, reverse_lazy
-from django.utils.translation import ugettext_lazy as _
-from django_email_blacklist import DisposableEmailChecker
-from registration.forms import RegistrationFormUniqueEmail
 from django.contrib.auth.forms import (
     AuthenticationForm as AuthenticationFormBase,
     PasswordResetForm as PasswordResetFormBase,
@@ -16,6 +12,10 @@ from django.contrib.auth.forms import (
     UserCreationForm as UserCreationFormBase
 )
 from django.contrib.auth.forms import UsernameField
+from django.urls import reverse, reverse_lazy
+from django.utils.translation import ugettext_lazy as _
+from django_email_blacklist import DisposableEmailChecker
+from registration.forms import RegistrationFormUniqueEmail
 from snowpenguin.django.recaptcha2.fields import ReCaptchaField
 from snowpenguin.django.recaptcha2.widgets import ReCaptchaWidget
 

accounts_ext/models.py

@@ -6,9 +6,8 @@ from django.core.validators import RegexValidator
 from django.db import models
 from django.db.models.signals import post_save
 from django.dispatch import receiver
-from django.utils.translation import ugettext_lazy as _
 from django.utils.timezone import now as datetime_now
-
+from django.utils.translation import ugettext_lazy as _
 from registration.signals import user_activated
 
 from core.models import (
@@ -18,8 +17,6 @@ from core.models import (
 )
 
 
-# Create your models here.
-
 class UserManager(ActualOnlyManager, BaseUserManager):
     def create_superuser(self, email, password):
         user = self.model(

accounts_ext/templatetags/accounts_ext_filters.py

@@ -2,6 +2,7 @@ from django.template import Library
 
 register = Library()
 
+
 @register.simple_tag(name='get')
 def get_by_key(dict, key):
-    return getattr(dict,key)
+    return getattr(dict, key)

accounts_ext/urls.py

@@ -1,6 +1,6 @@
 from django.urls import re_path
-from . import views
 
+from . import views
 
 urlpatterns = [
     re_path(r'^login/$', views.LoginView.as_view(), name='login'),
@@ -9,6 +9,7 @@ urlpatterns = [
     re_path(r'^register/done/$', views.RegistrationDoneView.as_view(), name='register_done'),
     re_path(r'^password/reset/$', views.ResetPasswordView.as_view(), name='reset_password'),
     re_path(r'^password/reset/done/$', views.ResetPasswordDoneView.as_view(), name='reset_password_done'),
-    re_path(r'^password/reset/change/(?P<uidb64>[0-9A-Za-z_\-]+)/(?P<token>.+)/$', views.ResetPasswordConfirmView.as_view(), name='reset_password_change'),
+    re_path(r'^password/reset/change/(?P<uidb64>[0-9A-Za-z_\-]+)/(?P<token>.+)/$',
+            views.ResetPasswordConfirmView.as_view(), name='reset_password_change'),
     re_path(r'^password/reset/complete/$', views.ResetPasswordCompleteView.as_view(), name='reset_password_complete')
 ]

accounts_ext/views.py

@@ -1,6 +1,6 @@
 import logging
+
 from django.conf import settings
-from django.contrib.auth.forms import SetPasswordForm
 from django.contrib.auth.views import (
     LoginView as LoginViewBase,
     LogoutView,
@@ -9,17 +9,15 @@ from django.contrib.auth.views import (
     PasswordResetConfirmView as PasswordResetConfirmViewBase,
     PasswordResetCompleteView as PasswordResetCompleteViewBase,
 )
+from django.shortcuts import redirect, resolve_url
+from django.urls import reverse_lazy
+from django.utils.http import is_safe_url, urlencode
+from django.utils.translation import ugettext_lazy as _
 from django.views.generic import TemplateView
-
 from registration.backends.default.views import (
     RegistrationView as RegistrationViewBase,
     ResendActivationView as ResendActivationViewBase
 )
-from django.contrib.messages.views import SuccessMessageMixin
-from django.shortcuts import redirect, resolve_url
-from django.urls import reverse_lazy
-from django.utils.http import is_safe_url, urlencode
-from django.utils.translation import ugettext_lazy as _
 
 from core.views import ProtectedTemplateView
 from .forms import (

blog_ext/admin.py

@@ -1,14 +1,11 @@
+from ckeditor_uploader.widgets import CKEditorUploadingWidget
 from django.contrib import admin
 from django.utils.translation import ugettext_lazy as _
-
-from ckeditor_uploader.widgets import CKEditorUploadingWidget
-
 from pinax.blog.admin import (
     PostAdmin as BasePostAdmin,
     SectionAdmin as BaseSectionAdmin,
     PostImageSet as BasePostImageSet
 )
-
 from pinax.blog.models import (
     Post as PinaxPost,
     Section as PinaxSection,
@@ -60,7 +57,6 @@ class PostImageSet(ImageSet):
         verbose_name_plural = _('Изображения')
 
 
-
 admin.site.unregister(BasePostImageSet)
 
 admin.site.register(

blog_ext/forms.py

@@ -1,6 +1,5 @@
 from django.forms import forms
 from django.utils.translation import ugettext_lazy as _
-
 from pinax.blog.forms import AdminPostForm as BaseAdminPostForm
 
 from blog_ext.models import Post

blog_ext/models.py

@@ -1,11 +1,8 @@
-import uuid
-
 import pytz
 from django.conf import settings
 from django.db import models
 from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _
-
 # Create your models here.
 from pinax.blog.models import (
     Post as BasePost,
@@ -14,9 +11,7 @@ from pinax.blog.models import (
     Section as BaseSection
 )
 from pinax.images.models import (
-    ImageSet as BaseImageSet,
-    Image as BaseImage,
-    image_upload_to)
+    ImageSet as BaseImageSet)
 
 from core.models import AbstractStatusModel, AbstractDateTimeModel
 

blog_ext/urls.py

@@ -1,6 +1,6 @@
 from django.urls import re_path
-from . import views
 
+from . import views
 
 urlpatterns = [
     re_path(r"^$", views.BlogIndexView.as_view(), name="blog"),

blog_ext/views.py

@@ -5,6 +5,7 @@ from pinax.blog.views import (
     SecretKeyPostDetailView as BaseSecretKeyPostDetailView,
     SlugUniquePostDetailView as BaseSlugUniquePostDetailView)
 
+
 class SlugUniquePostDetailView(BaseSlugUniquePostDetailView):
     pass
 

cabinet/views.py

@@ -1,4 +1,3 @@
-from django.conf import settings
 from django.core.paginator import Paginator
 from django.utils.translation import ugettext_lazy as _
 
@@ -11,13 +10,13 @@ class IndexTemplateView(ProtectedTemplateView):
     template_name = 'cabinet/index.html'
     title = _('Личный кабинет')
 
-    def get_ref_link(self,user):
+    def get_ref_link(self, user):
         return "{path}?ref={ref_link}".format(**{
             'path': user.referral.url,
             'ref_link': user.referral.code
         })
 
-    def get_bought_item_list(self,user):
+    def get_bought_item_list(self, user):
         bought_item_queryset = user.buying_set.filter(status=BUYING_STATUS_PAID).order_by('-create_at').all()
         paginator = Paginator(
             object_list=bought_item_queryset,
@@ -26,14 +25,14 @@ class IndexTemplateView(ProtectedTemplateView):
         the_page = 1
         return paginator.page(the_page)
 
-    def get_full_name(self,user):
+    def get_full_name(self, user):
         return '{last_name} {first_name} {patronymic}'.format(**{
             'last_name': user.profile.last_name or "",
             'first_name': user.profile.first_name or "",
             'patronymic': user.profile.patronymic or ""
         })
 
-    def get_user_points(self,user):
+    def get_user_points(self, user):
         return user.referral.referralstats.points
 
     def get_context_data(self, **kwargs):

cart/admin.py

@@ -1,25 +1,23 @@
 import csv
 import datetime
-import pytils
-import weasyprint
 from decimal import Decimal
 
+import pytils
+import weasyprint
 from django.conf import settings
 from django.contrib import admin
-from django.utils.translation import ugettext_lazy as _
 from django.http import HttpResponse
 from django.template.loader import render_to_string
-
+from django.utils.translation import ugettext_lazy as _
 from jet.admin import CompactInline
 from jet.filters import DateRangeFilter
 from rangefilter.filter import DateTimeRangeFilter
 
 from core.admin import SafeModelAdmin
-from core.models import Certificate
 from eshop_project.settings.base import PAY_REQUISITES
 from .models import (
     Offer, SupplyType,
-    Currency, Buying,
+    Buying,
     SupplyTarget,
     Order, Discount,
     Client)
@@ -32,6 +30,7 @@ class ProductOfferInlineAdmin(CompactInline):
     show_change_link = 1
     max_num = 1
 
+
 # Supply admins
 
 @admin.register(SupplyType)
@@ -49,7 +48,7 @@ class SupplyTargetAdmin(admin.ModelAdmin):
 @admin.register(Discount)
 class DiscountAdmin(admin.ModelAdmin):
     list_display = ['code', 'valid_from', 'valid_to', 'value', 'active']
-    list_filter  = ['valid_from', 'valid_to', 'active']
+    list_filter = ['valid_from', 'valid_to', 'active']
     search_field = ['code']
 
 
@@ -84,9 +83,10 @@ class BuyingAdmin(SafeModelAdmin):
                 data_row.append(value)
             writer.writerow(data_row)
         return response
+
     export_buyings_to_csv.short_description = _('экспортировать CSV')
 
-    def print_order_in_pdf(self,buyings):
+    def print_order_in_pdf(self, buyings):
         verb_price = pytils.numeral.in_words(round(buyings.total_price))
         verb_cur = pytils.numeral.choose_plural(round(buyings.total_price), ("рубль", "рубля", "рублей"))
         html = render_to_string('bootstrap/pdf/buyings.html', {
@@ -96,17 +96,17 @@ class BuyingAdmin(SafeModelAdmin):
         response = HttpResponse(content_type='application/pdf')
         response['Content-Disposition'] = 'filename=order_{}.pdf'.format(buyings.id)
 
-
         weasyprint.HTML(
             string=rendered_html,
             base_url=self.request.build_absolute_uri()
         ).write_pdf(
             response,
-            stylesheets = [
+            stylesheets=[
                 weasyprint.CSS(settings.STATIC_ROOT + '/css/bootstrap.min.css')
             ]
         )
         return response
+
     print_order_in_pdf.short_description = _('Распечатать заказ в pdf')
 
     def mark_buyings_as_paid(self, request, queryset):
@@ -118,8 +118,8 @@ class BuyingAdmin(SafeModelAdmin):
                 parent_profile.save()
             buying.status = BUYING_STATUS_PAID
             buying.save()
-    mark_buyings_as_paid.short_description = _('Отметить как оплаченные')
 
+    mark_buyings_as_paid.short_description = _('Отметить как оплаченные')
 
     inlines = ()
     list_display = ('user', 'offer', 'status', 'amount', 'total_price')
@@ -133,11 +133,11 @@ class BuyingAdmin(SafeModelAdmin):
 
 @admin.register(Order)
 class OrderAdmin(SafeModelAdmin):
-    list_display = ('order_code', 'customer_user', 'customer_name', 'customer_email','phone')
+    list_display = ('order_code', 'customer_user', 'customer_name', 'customer_email', 'phone')
 
 
 @admin.register(Client)
 class ClientAdmin(SafeModelAdmin):
-    list_display = ('name','image','status',)
+    list_display = ('name', 'image', 'status',)
     search_fields = ('name',)
     list_filter = ('status',)

cart/context_processors.py

@@ -2,5 +2,4 @@ from cart.utils import Cart
 
 
 def cart_basket(request):
-    return {'cart': Cart(request) }
-
+    return {'cart': Cart(request)}

cart/forms.py

@@ -1,25 +1,22 @@
 import uuid
 
 from crispy_forms.helper import FormHelper
-from crispy_forms.layout import Layout, Field, Div, HTML, Hidden, Fieldset, Submit
+from crispy_forms.layout import Layout, Field, Div, HTML, Submit
 from django import forms
 from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.core.validators import MaxValueValidator, MinValueValidator
-from django.forms import ALL_FIELDS, formset_factory
 from django.urls import reverse_lazy
+from django.utils.translation import ugettext_lazy as _
 
 from cart.models import (
-    Buying, BUYING_STATUS_IN_CART, Offer, SupplyType, SupplyTarget, Discount, Order
+    Buying, Offer, SupplyType, SupplyTarget, Discount, Order
 )
 from cart.tasks import send_user_order_notification, send_admin_order_notification
 from contact_us.mixins import RequestNotifiable
 from core.forms import QueryFormBase
 from core.models import City
 from core.utils import parse_path
-from django.utils.translation import ugettext_lazy as _
-
-from products.models import Product
 
 
 class CartAddInlineForm(forms.ModelForm):
@@ -122,7 +119,7 @@ class CartCheckoutForm(RequestNotifiable, forms.ModelForm):
     form_action = {'viewname': 'cart:confirm', 'kwargs': {}}
     field_template = 'bootstrap/forms/cart_checkout.html'
 
-    city = forms.CharField(label=_('Город'),max_length=255)
+    city = forms.CharField(label=_('Город'), max_length=255)
 
     def __init__(self, *args, **kwargs):
         self.helper = FormHelper()

cart/models.py

@@ -1,24 +1,19 @@
 import uuid
-
 from decimal import Decimal
-from autoslug import AutoSlugField
 
+from autoslug import AutoSlugField
+from django.contrib.auth import get_user_model
 from django.core.validators import MinValueValidator, MaxValueValidator, RegexValidator
 from django.db import models
-from django.contrib.auth import get_user_model
 from django.db.models import Avg
-from django.db.models.signals import post_save
-from django.dispatch import receiver
-from django.utils.translation import ugettext_lazy as _
 from django.utils.timezone import now, timedelta
-
+from django.utils.translation import ugettext_lazy as _
 
 # Create your models here.
 from core.models import (
     AbstractStatusModel, AbstractDateTimeModel,
     ActiveOnlyManager,
     City, Currency)
-
 from products.models import Product
 
 

cart/tasks.py

@@ -1,14 +1,15 @@
-import celery
-import weasyprint
-import pytils
 from io import BytesIO
 
+import celery
+import pytils
+import weasyprint
 from django.conf import settings
-from django.template.loader import render_to_string, get_template
 from django.core.mail import EmailMessage, EmailMultiAlternatives
+from django.template.loader import render_to_string, get_template
 
 from cart.models import Order
 
+
 @celery.task()
 def send_user_order_notification(context):
     """
@@ -26,7 +27,7 @@ def send_user_order_notification(context):
     # html = render_to_string('orders:AdminOrderPDF', args=[order_id])
 
     html = render_to_string('cart/order_invoice.html', {**settings.PAY_REQUISITES, 'order': order,
-                                                'verb_cur': verb_cur, 'verb_price': verb_price})
+                                                        'verb_cur': verb_cur, 'verb_price': verb_price})
     rendered_html = html.encode(encoding="UTF-8")
     out = BytesIO()
     weasyprint.HTML(string=rendered_html).write_pdf(out,
@@ -34,8 +35,8 @@ def send_user_order_notification(context):
                                                         weasyprint.CSS(settings.STATIC_ROOT + 'css/build.css')])
     order_invoice_name = 'Order_' + order.order_code
     weasyprint.HTML(string=rendered_html, base_url=context['site_url']).write_pdf(order_invoice_name,
-                                                                                           stylesheets=[weasyprint.CSS(
-                                                                                               settings.STATIC_ROOT + '/css/build.css')])
+                                                                                  stylesheets=[weasyprint.CSS(
+                                                                                      settings.STATIC_ROOT + '/css/build.css')])
     mail_send.attach('order_{}.pdf'.format(order.id), out.getvalue(), 'application/pdf')
     mail_send.send()
     return mail_send

cart/templatetags/cart_tags.py

@@ -1,12 +1,13 @@
 from django import template
-from django.template import loader, Node, Variable
-from django.utils.encoding import smart_str, smart_bytes
-from django.template.defaulttags import url
+from django.template import Node, Variable
 from django.template import VariableDoesNotExist
+from django.template.defaulttags import url
+from django.utils.encoding import smart_bytes
 from mptt.templatetags.mptt_tags import recursetree
 
 register = template.Library()
 
+
 @register.tag
 def breadcrumb(parser, token):
     """
@@ -40,7 +41,7 @@ def breadcrumb_url(parser, token):
     """
 
     bits = token.split_contents()
-    if len(bits)==2:
+    if len(bits) == 2:
         return breadcrumb(parser, token)
 
     # Extract our extra title parameter
@@ -51,21 +52,23 @@ def breadcrumb_url(parser, token):
 
     return UrlBreadcrumbNode(title, url_node)
 
+
 @register.tag
 def breadcrumb_mptt_url(parser, token):
     return recursetree(parser, token)
 
+
 class BreadcrumbNode(Node):
     def __init__(self, vars):
         """
         First var is title, second var is url context variable
         """
-        self.vars = map(Variable,vars)
+        self.vars = map(Variable, vars)
 
     def render(self, context):
         title = self.vars[0].var
 
-        if title.find("'")==-1 and title.find('"')==-1:
+        if title.find("'") == -1 and title.find('"') == -1:
             try:
                 val = self.vars[0]
                 title = val.resolve(context)
@@ -73,12 +76,12 @@ class BreadcrumbNode(Node):
                 title = ''
 
         else:
-            title=title.strip("'").strip('"')
-            title=smart_bytes(title)
+            title = title.strip("'").strip('"')
+            title = smart_bytes(title)
 
         url = None
 
-        if len(self.vars)>1:
+        if len(self.vars) > 1:
             val = self.vars[1]
             try:
                 url = val.resolve(context)
@@ -97,15 +100,15 @@ class UrlBreadcrumbNode(Node):
     def render(self, context):
         title = self.title.var
 
-        if title.find("'")==-1 and title.find('"')==-1:
+        if title.find("'") == -1 and title.find('"') == -1:
             try:
                 val = self.title
                 title = val.resolve(context)
             except:
                 title = ''
         else:
-            title=title.strip("'").strip('"')
-            title=smart_bytes(title)
+            title = title.strip("'").strip('"')
+            title = smart_bytes(title)
 
         url = self.url_node.render(context)
         return create_crumb(title, url)

contact_us/mixins.py

@@ -1,11 +1,11 @@
 import logging
 
 from django.core.mail import EmailMultiAlternatives
-from django.template import Context
 from django.template.loader import get_template
 
 logger = logging.Logger(__name__)
 
+
 class RequestNotifiable(object):
     MAIL_CATEGORY = 'Request'
 
@@ -34,7 +34,7 @@ class RequestNotifiable(object):
             context['from_email'],
             context['recipients']
         )
-        email.attach_alternative(body.render(context['email']),'text/html')
+        email.attach_alternative(body.render(context['email']), 'text/html')
         try:
             email.send()
         except Exception as e:

contact_us/models.py

@@ -1,12 +1,8 @@
-import os
-from django.conf import settings
-from django.contrib.auth import get_user_model
 from django.core.validators import RegexValidator
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 
 # Create your models here.
-from core.models import AbstractStatusModel, STATUS_DELETED
 
 # --------------------- REQUEST STATUS LIST --------------------
 

contact_us/views.py

@@ -2,9 +2,9 @@ import logging
 
 from django.contrib import messages
 from django.contrib.messages.views import SuccessMessageMixin
-from django.http import HttpResponseRedirect, HttpResponseBadRequest, Http404
-from django.views.generic import FormView
+from django.http import HttpResponseRedirect, Http404
 from django.utils.translation import ugettext_lazy as _
+from django.views.generic import FormView
 
 from .forms import ContactUsForm
 
@@ -26,18 +26,18 @@ class ContactUsFormView(SuccessMessageMixin, FormView):
             form.send_email(self.request)
         except Exception as e:
             self.form_invalid(form=form)
-        messages.add_message(self.request,messages.SUCCESS,self.success_message,extra_tags='contact_us_form_message')
+        messages.add_message(self.request, messages.SUCCESS, self.success_message, extra_tags='contact_us_form_message')
         return HttpResponseRedirect(self.next)
 
     def form_invalid(self, form):
         context = self.get_context_data()
         if len(form.errors) > 0:
             context['form_show_errors'] = True
-            messages.add_message(self.request,messages.ERROR,self.error_message,extra_tags='contact_us_form_message')
+            messages.add_message(self.request, messages.ERROR, self.error_message, extra_tags='contact_us_form_message')
         return HttpResponseRedirect(self.next)
 
     def dispatch(self, request, *args, **kwargs):
-        if request.POST.get('next',None) is None:
+        if request.POST.get('next', None) is None:
             raise Http404()
         else:
             self.next = request.POST.get('next')

flatpages_ext/admin.py

@@ -44,7 +44,9 @@ class CKFlatPageAdmin(FlatPageAdmin):
 
     def formfield_for_dbfield(self, db_field, **kwargs):
         if 'content' in db_field.name:
-            kwargs['widget'] = CKEditorUploadingWidget(config_name='awesome_ckeditor',attrs={'class':'mt mt-field-content-%s' % db_field.name.replace('content', '')})
+            kwargs['widget'] = CKEditorUploadingWidget(config_name='awesome_ckeditor', attrs={
+                'class': 'mt mt-field-content-%s' % db_field.name.replace('content', '')})
         return super(CKFlatPageAdmin, self).formfield_for_dbfield(db_field, **kwargs)
 
+
 admin.site.unregister(FlatPage)

flatpages_ext/views.py

@@ -1,8 +1,11 @@
-from django.shortcuts import render
-from .forms import SubscriberForm
 from django.contrib import auth
+from django.shortcuts import render
+
 from products.models import *
+from .forms import SubscriberForm
+
 
+# TODO What's going on here?
 def landing(request):
     form = SubscriberForm(request.POST or None)
 

index/urls.py

@@ -1,6 +1,7 @@
-from django.urls import re_path
+from django.urls import path
+
 from . import views
 
 urlpatterns = [
-    re_path(r'', views.IndexView.as_view(), name='index')
+    path('', views.IndexView.as_view(), name='index')
 ]

products/admin.py

@@ -1,7 +1,4 @@
 from django.contrib import admin
-from django.forms import ALL_FIELDS
-from django.utils.translation import ugettext_lazy as _
-
 from import_export import resources, fields, widgets
 from import_export.admin import ImportExportModelAdmin
 from jet.admin import CompactInline
@@ -9,12 +6,12 @@ from rangefilter.filter import DateRangeFilter, DateTimeRangeFilter
 
 from cart.admin import ProductOfferInlineAdmin
 from core.admin import SafeModelAdmin
-
 from .forms import ProductAdminForm
 from .models import (
     Product, ProductCategory, ProductImage, Manufacturer
 )
 
+
 class CustomModelResource(resources.ModelResource):
     def before_import_row(self, row, **kwargs):
         """
@@ -103,7 +100,6 @@ class ProductResource(CustomModelResource):
                                    default={},
                                    widget=widgets.CharWidget())
 
-
     class Meta:
         model = Product
         fields = ('id', 'name', 'description', 'producer', 'parent', 'is_active', 'attributes', 'discount_policy')

products/context_processors.py

@@ -41,7 +41,7 @@ def product_fitler_formset(request):
         product_form_action = {'viewname': request.resolver_match.view_name, 'kwargs': request.resolver_match.kwargs}
 
     return {
-        'left_product_filter_formset':{
+        'left_product_filter_formset': {
             'manufacturer': ProductManufacturerFilterForm(
                 product_form_action=product_form_action,
                 query_params=request.GET

products/models.py

@@ -1,20 +1,10 @@
+from autoslug import AutoSlugField
 from django.contrib.auth import get_user_model
 from django.db import models
-from django.db.models import Q
-from django.urls import reverse_lazy, reverse
-from django.contrib.postgres.fields import HStoreField
 from django.utils.translation import ugettext_lazy as _
+from mptt.models import TreeForeignKey
 
-from mptt import (
-    models as mptt_models,
-    managers as mptt_managers,
-    register
-)
-from mptt.models import MPTTModel, TreeForeignKey
-from autoslug import AutoSlugField
-
-from core.models import AbstractStatusModel, ActualOnlyManager, AbstractDateTimeModel, ActiveOnlyManager, \
-    AbstractStatusMPTTModel
+from core.models import AbstractStatusModel, AbstractDateTimeModel, AbstractStatusMPTTModel
 
 # ---------------------------------- COMMON PRODUCT STATUS ---------------------------------------#
 # Create your models here.

products/urls.py

@@ -13,23 +13,23 @@ Including another URLconf
     1. Import the include() function: from django.conf.urls import url, include
     2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
 """
-from django.urls import re_path
 import mptt_urls
+from django.urls import re_path
+
 from . import views
 from .models import ProductCategory, Product
 
 urlpatterns = [
-
     re_path(r'^list/$', views.ProductListView.as_view(), name='product_list'),
     re_path(
         r'^list/(?P<path>.*)',
-        mptt_urls.view(model=ProductCategory, view=views.ProductListView.as_view(),slug_field='slug'),
+        mptt_urls.view(model=ProductCategory, view=views.ProductListView.as_view(), slug_field='slug'),
         name='product_list'
     ),
 
     re_path(
         r'^item/(?P<path>.*)',
-        mptt_urls.view(model=Product, view=views.ProductDetailView.as_view(),slug_field='slug'),
+        mptt_urls.view(model=Product, view=views.ProductDetailView.as_view(), slug_field='slug'),
         name='product_details'
     ),
 
@@ -38,7 +38,6 @@ urlpatterns = [
     # url(r'^autocomplete/$', autocomplete),
     # url(r'^find/$', FacetedSearchView.as_view(), name='haystack_search'),
 
-
     # url(r'^products/(?P<product_slug>[-\w]+)/$', products, name='Product'),
     # url(r'^(?P<producer_slug>[-\w]+)/(?P<path>.*)',
     #     mptt_urls.view(model=ProductCategory, view=categorieslist, slug_field='slug'),

referral/admin.py

@@ -3,13 +3,12 @@ from django.contrib.admin import register
 from django.urls import reverse_lazy
 from django.utils.html import format_html
 from django.utils.translation import ugettext_lazy as _
-
 # Register your models here.
 from rangefilter.filter import DateRangeFilter, DateTimeRangeFilter
 
 from core.admin import SafeModelAdmin
-from .models import Referral, ReferralStats
 from .forms import ReferralAdminForm, ReferralStatsAdminForm
+from .models import Referral, ReferralStats
 
 
 class ReferralAdminInline(admin.TabularInline):
@@ -23,6 +22,7 @@ class ReferralAdminInline(admin.TabularInline):
     def has_delete_permission(self, request, obj=None):
         return False
 
+
 @register(Referral)
 class ReferralAdmin(SafeModelAdmin):
     def has_add_permission(self, request):

referral/middleware.py

@@ -1,7 +1,3 @@
-from django.http import HttpResponseRedirect
-from django.urls import reverse
-
-from core.models import STATUS_ACTIVE
 from .models import Referral
 from .utils import set_cookie, pop_cookie, get_cookie
 
@@ -12,18 +8,18 @@ class ReferralMiddleware:
 
     def __call__(self, request):
         response = None
-        if hasattr(self,'process_request'):
+        if hasattr(self, 'process_request'):
             response = self.process_request(request)
         if not response:
             response = self.get_response(request)
-        if hasattr(self,'process_response'):
-            response = self.process_response(request,response)
+        if hasattr(self, 'process_response'):
+            response = self.process_response(request, response)
         return response
 
-    def process_request(self,request):
+    def process_request(self, request):
         pass
 
-    def process_response(self,request,response):
+    def process_response(self, request, response):
         if not request.user.is_authenticated:
             code = request.GET.get('ref')
             cookie_code = get_cookie(request.COOKIES, 'referral')
@@ -37,4 +33,3 @@ class ReferralMiddleware:
         elif request.user.is_authenticated:
             pop_cookie(response, 'referral')
         return response
-

referral/models.py

@@ -1,17 +1,14 @@
 import logging
-import string
-
 import random
+import string
 
 from django.conf import settings
 from django.contrib.auth import get_user_model
-from django.contrib.sites.models import Site
 from django.db import models
 from django.db.models.signals import post_save
 from django.dispatch import receiver
 from django.urls import reverse_lazy
 from django.utils.translation import ugettext_lazy as _
-
 # Create your models here.
 from registration.signals import user_activated
 

referral/urls.py

@@ -1,6 +1,3 @@
-from django.conf.urls import url
-from django.urls import re_path
-
 urlpatterns = [
     # re_path()
 ]

referral/utils.py

@@ -1,13 +1,17 @@
 import datetime
 
-def set_cookie(response, key, value, day_expire = 1):
+
+def set_cookie(response, key, value, day_expire=1):
     max_age = day_expire * 24 * 60 * 60
-    expires = datetime.datetime.strftime(datetime.datetime.utcnow() + datetime.timedelta(seconds=max_age), "%a, %d-%b-%Y %H:%M:%S GMT")
-    response.set_cookie(key=key,value=value,max_age=max_age,expires=expires) # @TODO: Connect cookie to domain
+    expires = datetime.datetime.strftime(datetime.datetime.utcnow() + datetime.timedelta(seconds=max_age),
+                                         "%a, %d-%b-%Y %H:%M:%S GMT")
+    response.set_cookie(key=key, value=value, max_age=max_age, expires=expires)  # @TODO: Connect cookie to domain
+
 
 def get_cookie(cookies, key):
     return cookies.get(key) if cookies.get(key) else None
 
+
 def pop_cookie(response, key):
     cookie = get_cookie(response.cookies, key)
     if cookie: