Oct. 5, 2009
12:30 p.m.
I agree with this 100% but I can't see it working unless we have some sort of transition plan. Just saying "ok, switch your format strings from % to {}" didn't work in Python 3.0 for various good reasons, and I can't imagine it will work in Python 4.0 unless we have a transition plan.
That doesn't mean we have to have a transition plan *now*. Creating one after Python 3.5 is released (i.e. in 2015 or so) might be sufficient. To create a transition plan, you first need *consensus* that you actually do want to transition. I don't think such consensus is available, and might not be available for a few more years. Pushing the issue probably delays obtaining consensus. Regards, Martin