我使用的是Ubuntu 14.04中的python 2.7。我用这些命令安装了scikit-learn, numpy和matplotlib:
sudo apt-get install build-essential python-dev python-numpy \
python-numpy-dev python-scipy libatlas-dev g++ python-matplotlib \
ipython
但是当我导入这些包时:
from sklearn.cross_validation import train_test_split
它返回给我这个错误:
ImportError: No module named sklearn.cross_validation
我需要做什么?
当前回答
Train_test_split是sklearn模块的一部分。因此，您可能需要从Model_selection导入模块
代码:
from sklearn.model_selection import train_test_split
其他回答
过去:从sklearn.cross_validation (从0.20开始，这个包在0.18版本中已弃用，从sklearn import model_selection更改为)。
现在:从sklearn导入model_selection
示例2:
过去:来自sklearn。cross_validation导入cross_val_score(0.18版本已弃用)
现:来自sklearn。导入cross_val_score
这可能是由于sklearn.cross_validation的弃用。 请替换sklearn。使用sklearn.model_selection进行交叉验证
Ref - https://github.com/amueller/scipy_2015_sklearn_tutorial/issues/60
像这样更改代码
# from sklearn.cross_validation import train_test_split
from sklearn.model_selection import train_test_split
Train_test_split现在在model_selection中。类型:
from sklearn.model_selection import train_test_split
应该可以
sklearn。Cross_validation现在改为sklearn.model_selection
只改变
sklearn.cross_validation
to
sklearn.model_selection
