Re:Porting a historic Python2 module to Python3
by viraptor on Thursday July 27, 2017 @06:17PM
(#14870144)
It worked both ways. Some new features were ported back, some could be ported, but explicitly weren't to encourage migration. On the other side, things like the "u" prefix got re-added to python 3 for compatibility.
Did it really? My impression was the opposite: the fact that so much of Python 3 became available in Python 2 made people feel like there was no point in moving to Python 3.