ImportError in importing from sklearn cannot import name check build

Question

I am getting the following error while trying to import from sklearn    gt  gt  gt  from sklearn import svm  Traceback  most recent call last     File   lt pyshell 17 gt    line 1  in  lt module gt     from sklearn import svm   File  C  Python27 lib site-packages sklearn   init   py   line 16  in  lt module gt     from   import check build ImportError  cannot import name check build   I am using python 2 7  scipy-0 12 0b1 superpack  numpy-1 6 0 superpack  scikit-learn-0 11 I have a windows 7 machine  I have checked several answers for this issue but none of them gives a way out of this error

User · Answer

My solution for Python 3 6 5 64-bit Windows 10    pip uninstall sklearn pip uninstall scikit-learn pip install sklearn   No need to restart command-line but you can do this if you want  It took me one day to fix this bug  Hope this help

User · Answer

I had problems importing SKLEARN after installing a new 64bit version of Python 3 4 from python org   Turns out that it was the SCIPY module that was broken  and alos failed when I tried to  import scipy    Solution was to uninstall scipy and reinstall it with pip3   C   gt  pip uninstall scipy   lots of reporting messages deleted   Proceed  y n   y   Successfully uninstalled scipy-1 0 0  C  Users  gt pip3 install scipy  Collecting scipy   Downloading scipy-1 0 0-cp36-none-win amd64 whl  30 8MB      100                                                                     30 8MB 33kB s Requirement already satisfied  numpy gt  1 8 2 in c  users johnmccurdy appdata loca l programs python python36 lib site-packages  from scipy  Installing collected packages  scipy Successfully installed scipy-1 0 0  C  Users gt python Python 3 6 4  v3 6 4 d48eceb  Dec 19 2017  06 54 40   MSC v 1900 64 bit  AMD64    on win32 Type  help    copyright    credits  or  license  for more information   gt  gt  gt  import scipy  gt  gt  gt   gt  gt  gt  import sklearn  gt  gt  gt

User · Answer

Worked for me after installing scipy

User · Answer

None of the other answers worked for me  After some tinkering I unsinstalled sklearn   pip uninstall sklearn   Then I removed sklearn folder from here   adjust the path to your system and python version   C  Users  USERNAME  AppData Roaming Python Python36 site-packages   And the installed it from wheel from this site  link  The error was there probably because of a version conflict with sklearn installed somewhere else

User · Answer

no need to uninstall  amp  then re-install sklearn  try this   from sklearn model selection import train test split

User · Answer

For me   I was upgrading the existing code into new setup by installing Anaconda from fresh with latest python version 3 7  For this    from sklearn import cross validation   from sklearn grid search import GridSearchCV   to  from sklearn model selection import GridSearchCV cross validate

User · Answer

i had the same problem reinstalling anaconda solved the issue for me

User · Answer

After installing numpy   scipy  sklearn  still has error  Solution   Setting Up System Path Variable for Python  amp  the PYTHONPATH Environment Variable  System Variables  add C  Python34 into path User Variables  add new   name PYTHONPATH  value C  Python34 Lib site-packages

User · Answer

I had the same issue on Windows  Solved it by installing Numpy MKL from http   www lfd uci edu  gohlke pythonlibs  numpy  there it s recommended to install numpy mkl before other packages that depend on it  as suggested by this answer

User · Answer

gt  gt  gt  from sklearn import preprocessing  metrics  cross validation  Traceback  most recent call last     File   lt pyshell 6 gt    line 1  in  lt module gt      from sklearn import preprocessing  metrics  cross validation   File  D  Python27 lib site-packages sklearn   init   py   line 31  in  lt module gt      from   import   check build ImportError  cannot import name   check build  gt  gt  gt                                   RESTART                                   gt  gt  gt  from sklearn import preprocessing  metrics  cross validation  gt  gt  gt     So  simply try to restart the shell

User · Answer

Usually when I get these kinds of errors  opening the   init   py file and poking around helps  Go to the directory C  Python27 lib site-packages sklearn and ensure that there s a sub-directory called   check build as a first step  On my machine  with a working sklearn installation  Mac OSX  Python 2 7 3  I have   init   py  setup py  their associated  pyc files  and a binary  check build so   Poking around the   init   py in that directory  the next step I d take is to go to sklearn   init   py and comment out the import statement---the check build stuff just checks that things were compiled correctly  it doesn t appear to do anything but call a precompiled binary  This is  of course  at your own risk  and  to be sure  a work around  If your build failed you ll likely soon run into other  bigger problems

User · Answer

If you use Anaconda 2 7 64 bit  try  conda upgrade scikit-learn   and restart the python shell  that works for me   Second edit when I faced the same problem and solved it   conda upgrade scikit-learn   also works for me

User · Answer

In windows   I tried to delete sklearn from the shell  pip uninstall sklearn  and re install it but doesn t work      the solution   1- open the cmd shell  2- cd c  pythonVERSION scripts 3- pip uninstall sklearn 4- open in the explorer  C  pythonVERSION Lib site-packages 5- look for the folders that contains sklearn and delete them    6- back to cmd  pip install sklearn

[python] ImportError in importing from sklearn: cannot import name check_build

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