jessie-wikimedia has python-pykube: 0.12.0-1+jessie0.
$ apt-cache show python-pykube Package: python-pykube Status: install ok installed Priority: optional Section: python Installed-Size: 94 Maintainer: Eldarion, Inc. <development@eldarion.com> Architecture: all Source: pykube Version: 0.12.0-1+jessie0 Depends: python (>= 2.7), python (<< 2.8), python-requests, python-yaml, python-six
Rebuilding https://gerrit.wikimedia.org/r/plugins/gitiles/operations/debs/pykube/ for stretch should be good enough.