Argh, I don&#x27;t like this argument.<p>There&#x27;s really barely anything that is python2 specific, most of the things that weren&#x27;t ported is no longer being maintained.<p>I think the main reason you should start moving to python3 is that it will be discontinued. Python 2.6 was EOL in 2013, 2.7 they&#x27;ve been more generous and you have 4 more years, originally it supposed to be 2015.<p>There&#x27;s no good reason to stick with 2.7, if you have some legacy apps there&#x27;s nothing preventing you from having Py2 and Py3 installed side by side.<p>If you need to write libraries that share code, it&#x27;s much easier to write the code in Py3 and then make it backwards compatible with use of from __future__ ... imports and six module.<p>I feel like people who still complaining about the difficulties did not actually tried Python 3. Py3 is much more enjoyable language to write in.