[peterkelly]

Are people really still so closely wedded to Python 2 that they find it easier to reimplement all the features they need from Python 3 in the former, instead of switching to the latter?

[siimtalvik]

yes.

I had a coworker who was against moving to python3(and kept on writing python2 code for a while) because you need to use brackets with python3 print statement.

[coldtea]

Yes.

[always_good]

Just think of any large code base and it should be obvious.

What's simpler, rewriting a massive project, or maintaining a library? For example, OP did the latter himself.