title: scikit-learn error: libquadmath.so.0: cannot open shared object file: No such file or directory
body: <p>I got this erreur when I've tried to import scikit learn to my python 3.5 (jupyter notebook):</p>
  
  <pre><code>from sklearn.model_selection import train_test_split
  
  
  ---------------------------------------------------------------------------
  ImportError                               Traceback (most recent call last)
  &lt;ipython-input-5-139cc3505715&gt; in &lt;module&gt;()
  ----&gt; 1 from sklearn.model_selection import train_test_split
  
  /opt/Anaconda/Anaconda3-4.2.0/lib/python3.5/site-packages/sklearn/__init__.py in &lt;module&gt;()
       55 else:
       56     from . import __check_build
  ---&gt; 57     from .base import clone
       58     __check_build  # avoid flakes unused variable error
       59 
  
  /opt/Anaconda/Anaconda3-4.2.0/lib/python3.5/site-packages/sklearn/base.py in &lt;module&gt;()
       10 from scipy import sparse
       11 from .externals import six
  ---&gt; 12 from .utils.fixes import signature
       13 from .utils.deprecation import deprecated
       14 from .exceptions import ChangedBehaviorWarning as _ChangedBehaviorWarning
  
  /opt/Anaconda/Anaconda3-4.2.0/lib/python3.5/site-packages/sklearn/utils/__init__.py in &lt;module&gt;()
        9 
       10 from .murmurhash import murmurhash3_32
  ---&gt; 11 from .validation import (as_float_array,
       12                          assert_all_finite,
       13                          check_random_state, column_or_1d, check_array,
  
  /opt/Anaconda/Anaconda3-4.2.0/lib/python3.5/site-packages/sklearn/utils/validation.py in &lt;module&gt;()
       16 
       17 from ..externals import six
  ---&gt; 18 from ..utils.fixes import signature
       19 from .deprecation import deprecated
       20 from ..exceptions import DataConversionWarning as _DataConversionWarning
  
  /opt/Anaconda/Anaconda3-4.2.0/lib/python3.5/site-packages/sklearn/utils/fixes.py in &lt;module&gt;()
      289     from ._scipy_sparse_lsqr_backport import lsqr as sparse_lsqr
      290 else:
  --&gt; 291     from scipy.sparse.linalg import lsqr as sparse_lsqr
      292 
      293 
  
  /opt/Anaconda/Anaconda3-4.2.0/lib/python3.5/site-packages/scipy/sparse/linalg/__init__.py in &lt;module&gt;()
      110 from __future__ import division, print_function, absolute_import
      111 
  --&gt; 112 from .isolve import *
      113 from .dsolve import *
      114 from .interface import *
  
  /opt/Anaconda/Anaconda3-4.2.0/lib/python3.5/site-packages/scipy/sparse/linalg/isolve/__init__.py in &lt;module&gt;()
        4 
        5 #from info import __doc__
  ----&gt; 6 from .iterative import *
        7 from .minres import minres
        8 from .lgmres import lgmres
  
  /opt/Anaconda/Anaconda3-4.2.0/lib/python3.5/site-packages/scipy/sparse/linalg/isolve/iterative.py in &lt;module&gt;()
        5 __all__ = ['bicg','bicgstab','cg','cgs','gmres','qmr']
        6 
  ----&gt; 7 from . import _iterative
        8 
        9 from scipy.sparse.linalg.interface import LinearOperator
  
  ImportError: libquadmath.so.0: cannot open shared object file: No such file or directory
  </code></pre>
  
  <p>the scikit learn 0.18.2 package is already installed and I can see it on the list when I run <code>conda list</code>(I got the same error with the last version 0.19.1).</p>
  
  <p>I work with the Anaconda 3 (conda 4.2.2) </p>