Our current python scripts and test frameworks work only under Python 2.7; there are a few changes that we need to make to upgrade our scripts to python 3, notably concerning encoding of strings. But toolings exist to helps us update and compatibility layers also exist to ease the transition.

I understand that python 2.7 EOL is in 2020, but we should still work on that.

related to a discuss post: https://discuss.elastic.co/t/step-3-init-and-create-the-metricset-failure/112046/5