All: Apply Black coding rules

subscription/urls.py

@@ -28,6 +28,6 @@ from subscription.views import *
 
 urlpatterns = [
     # Subscription views
-    url(r'^$', NewSubscription.as_view(), name='subscription'),
-    url(r'stats', SubscriptionsStatsView.as_view(), name='stats'),
+    url(r"^$", NewSubscription.as_view(), name="subscription"),
+    url(r"stats", SubscriptionsStatsView.as_view(), name="stats"),
 ]