Command “from sklearn.model_selection import something” runs with a mistake. What should i do?

Question

When I try to run my code I have an error:

ImportError: No module named model_selection

I have my sklearn v.17 installed together with Anaconda. This occurs only if I write "model_selection" after sklearn

from sklearn.model_selection import something

Answer 1

The answer is actually in your question.

The module model_selection has only been introduced in the version 0.18 of sklearn . It does not exist in the version 0.17 .

Look at the history here .

To get the module you thus need to update sklearn . As you use Anconda do (in a terminal):

 conda update scikit-learn

Answer 2

添加到sklearn的答案中，如果要继续使用sklearn版本0.17 ，请尝试以下操作：

from sklearn.cross_validation import train_test_split

Answer 3

我将Anaconda重新安装在默认文件夹中，此故障消失了。