[BUG] Cannot import inplace_column_scale

[glouppe]

It seems something is wrong with inplace_column_scale. On the bleeding edge version, the following imports fail on two of my boxes:

In [1]: from sklearn.linear_model  import Lasso
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-41abf34f77f4> in <module>()
----> 1 from sklearn.linear_model  import Lasso

/home/glouppe/anaconda/lib/python2.7/site-packages/sklearn/linear_model/__init__.py in <module>()
     10 # complete documentation.
     11 
---> 12 from .base import LinearRegression
     13 
     14 from .bayes import BayesianRidge, ARDRegression

/home/glouppe/anaconda/lib/python2.7/site-packages/sklearn/linear_model/base.py in <module>()
     28 from ..utils import as_float_array, atleast2d_or_csr, safe_asarray
     29 from ..utils.extmath import safe_sparse_dot
---> 30 from ..utils.sparsefuncs import mean_variance_axis0, inplace_column_scale
     31 
     32 

ImportError: cannot import name inplace_column_scale

[glouppe]

I assume this may also be the reason why documentation is no longer generated for some of the linear models: http://scikit-learn.org/dev/modules/classes.html#sklearn-linear-model-generalized-linear-models

[GaelVaroquaux]

It seems something is wrong with inplace_column_scale. On the bleeding edge
version, the following imports fail on two of my boxes:

---> 30 from ..utils.sparsefuncs import mean_variance_axis0, inplace_column_scale
31
32

ImportError: cannot import name inplace_column_scale

You need to do a make clean: sparsefuncs.so was replaced by
sparsefuncs.py, but chances are that the .so is still there and leading
to a conflicting import.

[glouppe]

Indeed, this solved my problem. Sorry for the noise.

[larsoner]

I just ran into the same error. In my case make clean helped, as did removing my previously-installed version before doing python setup.py install --user. I feel like I should have known this... but thanks for pointing out this issue @glouppe and @GaelVaroquaux for the fix!

[denson]

This worked for me as well. TYVM

[mattivi]

on windows platform (32bit) I get the same errore as in the topic. Both on v0.15.1 and on v0.15.2. I've tried both upgrade and clean install.

[amueller]

@mattivi have you tried removing the whole folder and installing anew?