> Right, but would that have helped? Transitioning a large codebase from Python2 to Python3 is a significant undertaking, there's no way around it. I haven't m

> Right, but would that have helped? Transitioning a large codebase from Python2 to Python3 is a significant undertaking, there's no way around it. I haven't migrated from python2->3 however I've worked on projects in both. I think a "python2+3" version would have helped. With both APIs in place new code can be written the new way and old code can be migrated as it is touched. Having the ability to incrementally change code I think encourages the transition since you won't end up with a pile of broken code.