[SciPy-User] ImportError: *.so: cannot open shared object file: No such file or directory

[josef.pktd at gmail.com]

On Wed, Nov 2, 2011 at 11:38 AM, Pundurs, Mark <mark.pundurs at navteq.com> wrote:
> I want to use the function stats.norm.isf, but no matter how I try to import it I end up with the error "ImportError: <libname>.so: cannot open shared object file: No such file or directory". The .so files cited do exist in /usr/lib (as symbolic links to other .so files that also exist in that directory). From what I've read, that's where they're supposed to be - but I think the Python installation is in a nonstandard location. Is that the problem? How can I work around it?
>
> Is there some way I can stitch together pieces of Scipy code in my script to directly access stats.norm.isf functionality and bypass these problems?

No it won't be possible if you cannot run (Fortran) extensions.
norm.isf uses scipy.special, which uses _cephes.

Josef

>
> I'm running Scipy 0.8.0/Python 2.6.3 under Red Hat Enterprise Linux ES release 4 (Nahant Update 5) on a Dell PowerEdge 1950.
>
> Traceback (most recent call last):
>  File "/disk1/hadoop/tmp/taskTracker/jobcache/job_201109081055_6643/attempt_201109081055_6643_r_000000_0/work/./ExpandAndAverageFinal_ReducerB_pc.py", line 13, in <module>
>    from scipy.stats import norm
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/stats/__init__.py", line 7, in <module>
>    from stats import *
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/stats/stats.py", line 203, in <module>
>    import scipy.linalg as linalg
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/linalg/__init__.py", line 9, in <module>
>    from basic import *
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/linalg/basic.py", line 16, in <module>
>    from lapack import get_lapack_funcs
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/linalg/lapack.py", line 14, in <module>
>    from scipy.linalg import flapack
> ImportError: liblapack.so: cannot open shared object file: No such file or directory
>
> Traceback (most recent call last):
>  File "/disk1/hadoop/tmp/taskTracker/jobcache/job_201109081055_6658/attempt_201109081055_6658_r_000000_0/work/./ExpandAndAverageFinal_ReducerB_pc.py", line 13, in <module>
>    from scipy.stats.norm import isf
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/stats/__init__.py", line 7, in <module>
>    from stats import *
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/stats/stats.py", line 202, in <module>
>    import scipy.special as special
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/special/__init__.py", line 8, in <module>
>    from basic import *
>  File "/tools/python/2.6.3_3/linux_x86_64/lib/python2.6/site-packages/scipy/special/basic.py", line 6, in <module>
>    from _cephes import *
> ImportError: libgfortran.so.1: cannot open shared object file: No such file or directory
>
> Thanks,
> Mark Pundurs
> Data Analyst - Traffic
> Nokia Location & Commerce, Chicago
>
>
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