我正在处理图像检测问题，但是在导入RandomizedSearchCV.
我已经安装：
pip3 install scikit-learn
pip3 install scikit-image
我首先尝试了这段代码：
from sklearn.neighbors import KNeighborsClassifier
from sklearn.model_selection import GridSearchCV
它起作用了，之后，我RandomizedSearchCV像这样导入，并且显示错误。
from sklearn.grid_search import RandomizedSearchCV
from sklearn.grid_search import GridSearchCV
from sklaern.cross_validation import train_test_split
---------------------------------------------------------------------------
ModuleNotFoundError Traceback (most recent call last)
<ipython-input-11-9f5ecfd22091> in <module>
----> 1 from sklearn.grid_search import RandomizedSearchCV
2 from sklearn.grid_search import GridSearchCV
3 from sklaern.cross_validation import train_test_split
ModuleNotFoundError: No module named 'sklearn.grid_search'
>>> import sklearn
>>> sklearn.__version__
'0.20.3'