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To: python-list@python.org
From: Robert Kern <robert.kern@gmail.com>
Subject: Re: Need explanation of this error
Date: Mon, 01 Jul 2013 10:23:21 +0100
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Xref: csiph.com comp.lang.python:49536

On 2013-07-01 10:13, prerit86@gmail.com wrote:
> Hi,
>
> I'm new to Python and trying to run a already written code. Can someone please explain the error below? And if possible, how do I resolve this?
>
> Traceback (most recent call last):
>    File "c:\Project_1\regression_1.py", line 7, in <module>
>      from sklearn import metrics, cross_validation, linear_model
>    File "c:\Python27\lib\site-packages\sklearn\metrics\__init__.py", line 31, in
> <module>
>      from . import cluster
>    File "c:\Python27\lib\site-packages\sklearn\metrics\cluster\__init__.py", line
>   8, in <module>
>      from .supervised import adjusted_mutual_info_score
>    File "c:\Python27\lib\site-packages\sklearn\metrics\cluster\supervised.py", li
> ne 19, in <module>
>      from .expected_mutual_info_fast import expected_mutual_information
>    File "expected_mutual_info_fast.pyx", line 10, in init sklearn.metrics.cluster
> .expected_mutual_info_fast (sklearn\metrics\cluster\expected_mutual_info_fast.c:
> 4886)
>    File "c:\Python27\lib\site-packages\scipy\special\__init__.py", line 529, in <
> module>
>      from ._ufuncs import *
> ImportError: DLL load failed: The specified module could not be found.

This particular module incorporates FORTRAN subroutines. My guess is that 
whoever compiled your scipy binary did it in such a way that the FORTRAN 
standard library was being linked in as a DLL instead of statically. This DLL is 
not present on your system. Windows is trying to find it, but failing.

How did you install scipy? If you used a prebuilt binary installer, can you 
please link to the exact one that you used?

Try using depends.exe to find out what DLL it is looking for.

   http://www.dependencywalker.com/

The file that you want to check in depends.exe:

   c:\Python27\lib\site-packages\scipy\special\_ufuncs.pyd

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
  that is made terrible by our own mad attempt to interpret it as though it had
  an underlying truth."
   -- Umberto Eco