I am getting a import error?
 
  
 
  
 
 
 
 
 
 
    
        
        asked 11 years ago  
 
 naren gravatar image  
 
 
 
 
    
        
        updated 11 years ago  
 
 vdelecroix gravatar image  
 
 
 
 
 
I have recently shifted to python from Matlab. I have tried installing a toolbox SPAMS(sparse modelling software) using sage --python. When I try to import spams module it gives
 
>>> import spams
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-2eecc34cc6d3> in <module>()
----> 1 import spams

/opt/spams-python/spams.py in <module>()
      5 
----> 6 import spams_wrap
      7 import numpy as np

/opt/spams-python/spams_wrap.py in <module>()
     30             return _mod
---> 31     _spams_wrap = swig_import_helper()
     32     del swig_import_helper

/opt/spams-python/spams_wrap.py in swig_import_helper()
     22         except ImportError:
---> 23             import _spams_wrap
     24             return _spams_wrap

ImportError: /opt/sage-5.9.beta5/local/lib/liblapack.so: undefined symbol: cblas_zswap
 
I know ATLAS, LAPACK and BLAS are already present in the stage installation. 
 
Kindly help me resolve this issue. Any help will be appreciated.
 
Cheers,
Naren
 
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Comments
Did you follow the installation instructions for SPAMS as in section 2 of
[the SPAMS documentation](http://spams-devel.gforge.inria.fr/doc-python/doc_spams.pdf),
but replacing

    python setup.py install --prefix=your-installation-dir

by

    sage --python setup.py install --prefix=your-installation-dir

?
slelievre gravatar imageslelievre (
    
        11 years ago
    )
Yeah I did. I have replaced "python" by "sage --python" 
naren gravatar imagenaren (
    
        11 years ago
    )
Yeah I did. I have replaced "python" by "sage --python" 

It didn't show any error when I installed it but it reported the ImportError when tried "import spams" in sage notebook.
naren gravatar imagenaren (
    
        11 years ago
    )
Can anyone please help me with this problem!
naren gravatar imagenaren (
    
        11 years ago
    )
Hi, I edited your post with the (almost) complete Traceback that I was able to reproduce on my computer. The error is quite strange. You perhpas would ask your question on sage-support (https://groups.google.com/group/sage-support) with a link to this post.
vdelecroix gravatar imagevdelecroix (
    
        11 years ago
    )

            
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