[wenc]

> People keep writing blog posts about how easy it is to migrate your code

As someone who has had to migrate from Py2 to Py3, it wasn't easy. Unicode/bytes/strings was the hardest aspect of it -- because Python is dynamic, there were breakages that unit tests couldn't exhaustively test for so things broke in production and we had to scramble to fix.

Other aspects were mostly automatically handled by the 2to3 tool.