ImportError: cannot import name 'enable_successive_halving' from 'sklearn.experimental'

[arioboo]

Describe the issue linked to the documentation

I were trying to build an HTML documentation of scikit-learn branch master from the doc subdir, following Documentation.

I installed those packages within my Anaconda environment (there is no sense to be different, but ofc it'll be). The error comes when I'm trying to make html, then it throws:

ImportError: cannot import name 'enable_successive_halving' from 'sklearn.experimental'

Suggest a potential alternative/fix

Please, fix this behaviour, or tell me how to nicely get an html documentation.

Thanks.

[makermotion]

I don't know which of the packages tries to import enable_successive_halving when you make html but that module does not seem to be in sklearn.experimental. See https://github.com/scikit-learn/scikit-learn/tree/master/sklearn/experimental.

Although; this PR #18563 seems to be changing the name from enable_successive_halving to enable_halving_search_cv if I did not get it wrong.

I suggest you to find out which part of your code imports the name and try to change it.

[NicolasHug]

Do you still have the same issue with the latest master branch @arioboo ?

[tnwei]

Followed the steps and built docs w/o issue using branch master. Is it possible that this is a setup issue? If you still have the full stacktrace, posting it here will help provide context.

[cmarmo]

Hi @arioboo thanks for reaching out. The issue is not reproducible in master, and information is missing about your installation. I'm closing this one. Feel free to reopen if you are still experimenting the issue and you can provide more details.