Comment by mplanchard

I assume you weren’t working with Python during the 2 to 3 transition? There were at least six years, if not more, of major libraries not supporting Python 3, of as a library author trying to write code that was 2/3 compatible, etc.

I agree that post Python 3 it is less common for a language update to break third-party libraries, but I also don’t think sweeping the 2 to 3 years under the rug is fair.