【Bug记录】ModuleNotFoundError: No module named ‘sklearn.grid_search‘

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一、报错代码

from sklearn.grid_search import GridSearchCV

二、报错信息

ModuleNotFoundError                       Traceback (most recent call last)
Input In [28], in <cell line: 8>()
      6 from IPython.display import Image
      7 from sklearn.ensemble import RandomForestRegressor
----> 8 from sklearn.grid_search import GridSearchCV
      9 # from sklearn.model_selection import GridSearchCV
     10 from sklearn.model_selection import train_test_split

ModuleNotFoundError: No module named 'sklearn.grid_search'

三、报错原因

sklearn.grid_search模块在0.18版本中被弃用，它所支持的类转移到model_selection模块中。还要注意，新的CV迭代器的接口与这个模块的接口不同。sklearn.grid_search将在0.20中被删除。

四、解决方案

将报错代码替换为下面的代码即可解决问题：

from sklearn.model_selection import GridSearchCV