Well , actually I think Zed is dumb and appears unable to Google . A search for python 3 adoption yields , Python 3 is winning library developer support 3 iswinning . Five years ago Python 2 only packages were at 80 % and Python 3 only packages were under 5 %. Now they have converged so that Python 2 and Python 3 only packages are both around 20 %. The overall trend is clear that Python 3 adoption is increasing and Python 2 usage is decreasing . There will be a tipping point , I think in the likely in the next two or three years , where enough major projects are on Python 3 and adoption is highenough that they will start to phase out support for Python 2 . For example , Django is scheduled to go to Python 3 only in 2018 . Large projects like this that plan to become Python 3 only will be delayed in this plan by a year or two , but the idea that this trend is going to reverse and people are going to stop the switch to Python 3 and revert to Python 2 only and Python 3 will die ? It ' s totally ridiculous .