DTS has operated using the version of python available in the oldest supported Ubuntu LTS for a while now, but after some discussion in the working group, we decided that DTS should designate a Python version explicitly for the sake of compatibility. My initial proposal is Python 3.6, due to Ubuntu 18.04 LTS shipping with it by default. Currently, the Community CI Lab runs Python 3.8 on all testers (Ubuntu 20.04 LTS), but for the sake of compatibility a lower python version might be desirable. 

The working group is specifically looking for reasons to not use Python 3.6.

The Community CI Lab perspective is that versions higher than 3.8 are not acceptable due to the issues with changing the default Python installation on Ubuntu. This may be raised to 3.10 in June of this year after we have had time to evaluate the 22.04 release of Ubuntu.

Owen Hilyard