Index: tox.ini
===================================================================
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@
 skipsdist = true
 
 [flake8]
-ignore = D1,C815,W503
+ignore = D1,C815,W503,W504
 per-file-ignores =
     cms/bin/generate_static_pages.py : A107,A301,A302,E501
     cms/bin/translate.py : A107,A301,A302,E501,F821