python - cannot import a module from scikitlearn

Question

I‘m using scaler = preprocessing.StandardScaler().fit(X) to pre-process my feature values.

However, when it is run, there's an error saying:

AttributeError: 'module' object has no attribute 'StandardScaler'

I can successfully import preprocessing from sklearn and use its 'scale' method:
X_scaled = preprocessing.scale(X).

But StandardScaler just doesn't work. Could anybody help? Thanks

Answer 1

使用的是什么版本sklearn？版本StandardScaler中引入。以前的版本中没有 StadardScaler 。您可能需要升级您的安装。sklearn0.13

要检查版本尝试

python -c "import sklearn; print(sklearn.__version__)"