--- a/cubicweb/crypto.py	Thu May 16 17:17:42 2019 +0200
+++ b/cubicweb/crypto.py	Thu May 16 17:18:29 2019 +0200
@@ -26,6 +26,8 @@
 
 
 _CYPHERERS = {}
+
+
 def _cypherer(seed):
     try:
         return _CYPHERERS[seed]