PEP8

coin/billing/views.py

@@ -17,7 +17,8 @@ def invoice_pdf(request, id):
     except:
         invoice = get_object_or_404(Invoice, number=id)
 
-    if not invoice.has_owner(request.user.username) and not request.user.is_superuser:
+    if not invoice.has_owner(request.user.username)\
+       and not request.user.is_superuser:
         raise PermissionDenied
 
     member = invoice.member