sklearn.utils.fixes.MaskedArray removed in 0.23.0 #17198
Description
In scikit-learn 0.23.0:
>>> import skopt
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "venv/lib/python3.6/site-packages/skopt/__init__.py", line 54, in <module>
from .searchcv import BayesSearchCV
File "venv/lib/python3.6/site-packages/skopt/searchcv.py", line 16, in <module>
from sklearn.utils.fixes import MaskedArray
ImportError: cannot import name 'MaskedArray'
There was no deprecation warning in earlier version - now any library that relied on this (e.g. scikit optimize) is broken.