I am generally using the latest master branch build of Blender from here:
Now some scripts are throwing errors and I believe it might be because master has moved to python 3.6 instead of 3.5 of the latest release. I would really like, if possible, to force Blender to use 3.5 instead of 3.6. I don’t know python well enough to debug the scripts.
Seeing as 2.8 is a separate branch and there wont be another release of 2.79 I wonder why it was necessary to upgrade python at all in the master branch breaking compatability with 2.79 release compatible addons in the process.