"module could not be found" error

Joel Goldstick joel.goldstick at gmail.com
Tue Mar 19 16:26:02 CET 2013


On Tue, Mar 19, 2013 at 11:10 AM, Robert Flintham <
Robert.Flintham at uhb.nhs.uk> wrote:

> Hi,****
>
> ** **
>
> I’m trying to run the following, with <an array> representing an array of
> floating point numbers:****
>
> ** **
>
> ------------------------------------------------------------****
>
> import numpy as np****
>
> import scipy as sp****
>
> from scipy import optimize****
>
> ** **
>
> xdata=<an array>****
>
> ydata=<an array>****
>
> ** **
>
> def t2fit(x,T2,A):****
>
>     return A * np.exp(-x/T2)****
>
> ** **
>
> popt, pcov = optimize.curve_fit(t2fit, xdata, ydata, p0=None, sigma=None)*
> ***
>
> ------------------------------------------------------------****
>
> ** **
>
> But I’m getting an ImportError:****
>
> ** **
>
> Traceback (most recent call last):****
>
>   File
> "K:\eclipse\plugins\org.python.pydev_2.7.1.2012100913\pysrc\pydevd.py",
> line 1397, in <module>****
>
>     debugger.run(setup['file'], None, None)****
>
>   File
> "K:\eclipse\plugins\org.python.pydev_2.7.1.2012100913\pysrc\pydevd.py",
> line 1090, in run****
>
>     pydev_imports.execfile(file, globals, locals) #execute the script****
>
>  File
> "K:\eclipse\plugins\org.python.pydev_2.7.1.2012100913\pysrc\_pydev_execfile.py",
> line 38, in execfile****
>
>     exec(compile(contents+"\n", file, 'exec'), glob, loc) #execute the
> script****
>
>   File "K:\PROGRAMMING\MRI_Python\fatfrac.py", line 7, in <module>****
>
>     from scipy import optimize****
>
>   File "K:\Python33\lib\site-packages\scipy\optimize\__init__.py", line
> 147, in <module>****
>
>     from ._minimize import *****
>
>   File "K:\Python33\lib\site-packages\scipy\optimize\_minimize.py", line
> 29, in <module>****
>
>     from .lbfgsb import _minimize_lbfgsb****
>
>   File "K:\Python33\lib\site-packages\scipy\optimize\lbfgsb.py", line 40,
> in <module>****
>
>     from . import _lbfgsb****
>
> ImportError: DLL load failed: The specified module could not be found.****
>
> **
>

Looking at the paths, it looks like some packages are for p 2.7 and some
for p 3.3

> **
>
> ** **
>
> I’ve checked the path, and the file lbfgsb.py is definitely at that
> location (as are optimize.py and _minimize.py).  Does anyone know why I’m
> getting the error?****
>
> ** **
>
> All the best,****
>
> Rob****
>
> ** **
>
> ** **
>
> ** **
>
> *Robert Flintham
> Trainee Clinical Scientist - MRI*****
>
> Tel:****
>
>  +44 (0)121 371 7000****
>
> Email:****
>
>  Robert.Flintham at uhb.nhs.uk****
>
> Web:****
>
>  http://www.uhb.nhs.uk****
>
>
> *We’re bringing the world's most advanced cancer treatments to Birmingham.
> Find out more at www.qecancerappeal.org or text **QEHB01 £5** to **70070**to donate £5 to our appeal.
> **
> **
> RRPPS
> Medical Physics - University Hospitals Birmingham NHS Foundation Trust
> 63 Melchett Road, Kings Norton,
> Birmingham, B30 3HP
> **
> *******
>
>
>
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>


-- 
Joel Goldstick
http://joelgoldstick.com
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