People keep beating the 2.x dead horse. Moving to 3.x was a non-issue in 90% of the stuff I've seen "upgraded" written as far back as 2010 (at a telco, with a l

People keep beating the 2.x dead horse. Moving to 3.x was a non-issue in 90% of the stuff I've seen "upgraded" written as far back as 2010 (at a telco, with a lot of legacy). I stopped writing 2.x code in 2013, and 3.5 (the version that became the new baseline there since I left, which was updated to 3.5.10 in 2020) dates from 2015. I'm now running mostly 3.10, solely because there are a few binary wheels for 3.11 that aren't yet on ARM for some reason (mostly ML stuff, which tends to be maintained by academia). Any kind of argument that the 2.x -> 3.x transition is still relevant has to take in these timescales for context. Otherwise it just looks... dated.