I take it on a project by project basis. We have a bunch of legacy 2.x stuff running at work but when I began to greenfield new projects I made them 3.0 from th

I take it on a project by project basis. We have a bunch of legacy 2.x stuff running at work but when I began to greenfield new projects I made them 3.0 from the start. Folks at work asked why I made our codebase mixed with Python versions and I answered because I'm creating isolated tool projects from scratch and have no real constraints to use Python 2. It's made some issues for folks having to install both versions of python but it's been a pretty minor issue thus far.