In Pycon in 2014, Guido van Rossum, the creator of Python and, at the time, the Benevolent Dictator For Life of the language, stood on stage in a shirt that had a large 2.8 written on it in block letters, with a big red no entry sign through it. “It’s time to move on to Python 3,” he said, telling the audience that they should start adopting the new version of the language into their workflows. 

After many years of hard work towards that goal from the core committers, and surrounding community of libraries, Python 2 is finally at end of life. January 1, 2020, according to pythonclock.org, is the drop-dead date for support of Python 2.  …