sklearn 0.17.1: ImportError: cannot import name inplace_column_scale

问题

My sklearn works well before, after installing and updating a couple of other packages, I cannot import any model from sklearn.

The versions:

Python 2.7.12
Anaconda 2.4.1 (x86_64)
sklearn: 0.17.1 (downgrade from 0.18) spicy: 0.18.1

Measures I've tried:

restart the shell---> same error

uninstall sklearn, and reinstall it (the newest version is 0.18), downgrade it to 0.17--> same error

install sklearn and keep the version 0.18 -->still error

My code:

from sklearn import svm

The error

Traceback (most recent call last):

  File "<ipython-input-1-fe795c4388c4>", line 3, in <module>
    from sklearn import svm

  File "//anaconda/lib/python2.7/site-packages/sklearn/svm/__init__.py", line 13, in <module>
    from .classes import SVC, NuSVC, SVR, NuSVR, OneClassSVM, LinearSVC, \

  File "//anaconda/lib/python2.7/site-packages/sklearn/svm/classes.py", line 4, in <module>
    from .base import _fit_liblinear, BaseSVC, BaseLibSVM

  File "//anaconda/lib/python2.7/site-packages/sklearn/svm/base.py", line 11, in <module>
    from ..preprocessing import LabelEncoder

  File "//anaconda/lib/python2.7/site-packages/sklearn/preprocessing/__init__.py", line 8, in <module>
    from .data import Binarizer

  File "//anaconda/lib/python2.7/site-packages/sklearn/preprocessing/data.py", line 25, in <module>
    from ..utils.sparsefuncs import (inplace_column_scale,

ImportError: cannot import name inplace_column_scale

Besides svm, when I import tree, linear_model, the same thing happens.

from sklearn.models import linear_model

The error:

Traceback (most recent call last):

  File "<ipython-input-3-540f6792b379>", line 1, in <module>
    from sklearn.models import linear_model

ImportError: No module named models

Code:

from sklearn import tree

error: Traceback (most recent call last):

  File "<ipython-input-4-fcc6e7d2ee3e>", line 1, in <module>
    from sklearn import tree

  File "//anaconda/lib/python2.7/site-packages/sklearn/tree/__init__.py", line 6, in <module>
    from .tree import DecisionTreeClassifier

  File "//anaconda/lib/python2.7/site-packages/sklearn/tree/tree.py", line 30, in <module>
    from ..feature_selection.from_model import _LearntSelectorMixin

  File "//anaconda/lib/python2.7/site-packages/sklearn/feature_selection/__init__.py", line 7, in <module>
    from .univariate_selection import chi2

  File "//anaconda/lib/python2.7/site-packages/sklearn/feature_selection/univariate_selection.py", line 15, in <module>
    from ..preprocessing import LabelBinarizer

  File "//anaconda/lib/python2.7/site-packages/sklearn/preprocessing/__init__.py", line 8, in <module>
    from .data import Binarizer

  File "//anaconda/lib/python2.7/site-packages/sklearn/preprocessing/data.py", line 25, in <module>
    from ..utils.sparsefuncs import (inplace_column_scale,

ImportError: cannot import name inplace_column_scale

回答1:

Try this within your terminal:

conda install -c anaconda scikit-learn=0.18.1

If it does not work go to your terminal and try:

conda update anaconda

After the update is complete, then try the first bit of code again Hopefully it works

回答2:

please see this question. ImportError: cannot import name inplace_column_scale.

I think you face the same problem. There are several ways to solve it.

For windows. delete python27\Lib\site-packages\sklearn\utils\sparsefuncs.pyd.

For mac and linux, delete /usr/local/lib/python2.7/site-packages/sklearn/utils/sparsefuncs.so.

If you use anaconda, delete anaconda/lib/python2.7/site-packages/sklearn/utils/sparsefun‌cs.so
reinstall the sklearn. pip uninstall scikit-learn pip install scikit-learn

来源：https://stackoverflow.com/questions/41843007/sklearn-0-17-1-importerror-cannot-import-name-inplace-column-scale

标签

python-2.7

model

scikit-learn

importerror