Public bug reported:

sklearn depends on pytho-joblib (see file
/usr/lib/pymodules/python2.7/sklearn/externals/joblib/__init__.py", line
3), but the joblib is not a dependency of sklearn, it is only
recommended. The stack leading to this error is:

Traceback (most recent call last):
  File "bayesian_trajectory_dream.py", line 8, in <module>
    from data_log import *
  File "/wg/stor5/smagnenat/data/eth-asl/behaviour-learning/data_log.py", line 
7, in <module>
    import sklearn.decomposition
  File "/usr/lib/pymodules/python2.7/sklearn/decomposition/__init__.py", line 
10, in <module>
    from .sparse_pca import SparsePCA, MiniBatchSparsePCA
  File "/usr/lib/pymodules/python2.7/sklearn/decomposition/sparse_pca.py", line 
8, in <module>
    from ..linear_model import ridge_regression
  File "/usr/lib/pymodules/python2.7/sklearn/linear_model/__init__.py", line 
16, in <module>
    from .least_angle import Lars, LassoLars, lars_path, LARS, LassoLARS, \
  File "/usr/lib/pymodules/python2.7/sklearn/linear_model/least_angle.py", line 
19, in <module>
    from ..cross_validation import check_cv
  File "/usr/lib/pymodules/python2.7/sklearn/cross_validation.py", line 21, in 
<module>
    from .externals.joblib import Parallel, delayed
  File "/usr/lib/pymodules/python2.7/sklearn/externals/joblib/__init__.py", 
line 3, in <module>
    from joblib import *
ImportError: No module named joblib

** Affects: scikit-learn (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: precise

** Tags added: precise

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https://bugs.launchpad.net/bugs/1059952

Title:
  Missing dependency to python-joblib

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