If the OS (like Elive) uses 2.7 by default: Yes.
I'm getting used to python3 lately so I've set it to default python on my box.
Which does mean it'll hamper some older python stuff. 
Sometimes I feel like changes are ALWAYS being held up by laziness.
BTW
Did you ever try mu-editor?
It's over-simplified but has a nice and easy way to simply test or try out python3 scripts.
