worth noting that in the python 2 to 3 story, a migration path was mostly provided along with tools that tried to automatically refactor your code, the latest 2.x release was supported for nearly a decade, and there have been directions on how to temporarily write code to work on both python2 and python3.
Python 3 is only unusual in its failure. Perl6 Apocalypses [1] is wonderful. Python 3000 is pointless [2].
I've been Python developer at that time, the writing was on the wall. They have not provided migration path. PEP 414 "Complaint: This PEP may harm adoption of Python 3.2" [3], this is insane. Community voted with feet — they've stayed with Python 2 until clean migration path arrived. I've switched to Ruby and been happy since.
Ruby 1.8.7 was supported for five years.
You had to write Python 2 code and run 2to3, you had to live in the past or abandon it.
