Python3 expects a string not a binary 
Python3 expects a string not a binary 

This fixes issue #570
cortesi/qtile,encukou/qtile,xplv/qtile,kynikos/qtile,kiniou/qtile,soulchainer/qtile,de-vri-es/qtile,zordsdavini/qtile,EndPointCorp/qtile,aniruddhkanojia/qtile,kseistrup/qtile,jdowner/qtile,ramnes/qtile,nxnfufunezn/qtile,apinsard/qtile,dequis/qtile,frostidaho/qtile,qtile/qtile,cortesi/qtile,w1ndy/qtile,kseistrup/qtile,tych0/qtile,kopchik/qtile,tych0/qtile,dequis/qtile,himaaaatti/qtile,xplv/qtile,EndPointCorp/qtile,qtile/qtile,kynikos/qtile,StephenBarnes/qtile,ramnes/qtile,w1ndy/qtile,flacjacket/qtile,farebord/qtile,encukou/qtile,rxcomm/qtile,StephenBarnes/qtile,apinsard/qtile,andrewyoung1991/qtile,himaaaatti/qtile,farebord/qtile,frostidaho/qtile,andrewyoung1991/qtile,aniruddhkanojia/qtile,kopchik/qtile,de-vri-es/qtile,nxnfufunezn/qtile,rxcomm/qtile,kiniou/qtile,zordsdavini/qtile,soulchainer/qtile,jdowner/qtile,flacjacket/qtile