python 3 compatibility
python 3 compatibility

asmodehn/catkin,scpeters/catkin,asmodehn/catkin,harmishhk/catkin,ros/catkin,shyamalschandra/catkin,jack-oquin/catkin,beni55/catkin,asmodehn/catkin,wkentaro/catkin,wkentaro/catkin,harmishhk/catkin,scpeters/catkin,ros/catkin,thaddeustaylor/catkin,shyamalschandra/catkin,jack-oquin/catkin,beni55/catkin,wkentaro/catkin,ros/catkin,thaddeustaylor/catkin,thaddeustaylor/catkin,beni55/catkin,jack-oquin/catkin,shyamalschandra/catkin,scpeters/catkin,harmishhk/catkin