Ola
I did 4 rpms to install python33,python34,python35,python36. The documentation is at https://wiki.nethserver.org/doku.php?id=python-scl
for now it is on my dev folder
yum install http://mirror.de-labrusse.fr/NethDev/python-scl/nethserver-python33-0.1.0-1.ns7.sdl.noarch.rpm
yum install http://mirror.de-labrusse.fr/NethDev/python-scl/nethserver-rh-python34-0.1.0-1.ns7.sdl.noarch.rpm
yum install http://mirror.de-labrusse.fr/NethDev/python-scl/nethserver-rh-python35-0.1.0-1.ns7.sdl.noarch.rpm
yum install http://mirror.de-labrusse.fr/NethDev/python-scl/nethserver-rh-python36-0.1.0-1.ns7.sdl.noarch.rpm
please test and break it