python sklearn.cross_validation 模块导入失败

 参考链接： https://blog.csdn.net/Jae_Peng/article/details/79277920

解决办法：

原来在 cross_validation 里面的函数都放在 model_selection 里面了；

from sklearn.model_selection import GridSearchCV

from sklearn.model_selection import train_test_split