The problem was not that Python3 had broken things. The problem was the scale of breakage and inability to use both python2 and python3 code. Moreover only afte

The problem was not that Python3 had broken things. The problem was the scale of breakage and inability to use both python2 and python3 code. Moreover only after a few years since Python3 release it became possible to write libraries compatible with both Python2 and 3.