ImportError: cannot import name ‘Imputer‘ from ‘sklearn.preprocessing‘

出错代码

from sklearn.preprocessing import Imputer

错误：ImportError: cannot import name 'Imputer' from 'sklearn.preprocessing' 

原因：0.20新版功能:SimpleImputer取代了以前的sklearn.preprocessing.Imputer。

解决方法

from sklearn.impute import SimpleImputer
imputer = SimpleImputer(missing_values=np.nan, strategy='mean')