$ caniusepython3 --projects sklearn
Finding and checking dependencies ...
You need 1 project to transition to Python 3.
Of that 1 project, 1 has no direct dependencies blocking its transition:
sklearn
$ caniusepython3 --projects scikit-learn
Finding and checking dependencies ...
🎉 You have 0 projects blocking you from using Python 3!
https://pypi.org/project/sklearn/ says "Use scikit-learn instead" as it's just a wrapper (https://github.com/scikit-learn/scikit-learn/issues/8215).