numpy not working any more

[Poul Riis]

Den tirsdag den 15. august 2017 kl. 19.19.15 UTC+2 skrev bream... at gmail.com:
> On Tuesday, August 15, 2017 at 5:23:29 PM UTC+1, Poul Riis wrote:
> > Den tirsdag den 15. august 2017 kl. 07.29.05 UTC+2 skrev dieter:
> > > Poul Riis writes:
> > > > ...
> > > > For some time I have been using python 3.6.0 on a windows computer.
> > > > Suddenly, my numpy does not work any more.
> > > > This one-liner program:
> > > > import numpy as np
> > > > results in the long error message below.
> > > > ...
> > > > Traceback (most recent call last):
> > > >   File "C:\Users\pr\AppData\Local\Programs\Python\Python36\lib\site-packages\numpy\core\__init__.py", line 16, in <module>
> > > >     from . import multiarray
> > > > ImportError: DLL load failed: Den angivne procedure blev ikke fundet.
> > > 
> > > Apparently, the module "multiarry" is implemented in a separate
> > > DLL (= "Dynamically Loaded Library") and loading this DLL failed.
> > > 
> > > There can be several reasons for such a failure, among others:
> > > 
> > >  * the DLL is missing
> > > 
> > >  * the DLL is corrupted
> > > 
> > >  * the DLL depends on something which is missing or corrupted
> > > 
> > >  * there is a version mismatch (e.g. between the DLL and the Python
> > >    trying to load it)
> > > 
> > > 
> > > An initial step could be to try to reinstall "numpy" and
> > > see whether the problem goes away.
> > 
> > I have reinstalled numpy several times - doesn't help.
> 
> The short answer is you need to upgrade Python, not numpy.
> 
> For the long answer please see https://stackoverflow.com/questions/44537131/numpy-library-importerror-dll-load-failed-the-specified-procedure-could-not-be which in turn refers to https://bugs.python.org/issue29943.
> 
> Kindest regards.
> 
> Mark Lawrence.

I mentioned in my original question that I have tried Python 3.6.2 and that it indeed had no problems with numpy but that it on the other hand gave rize to another problem, namely failing installation of vtk (pip says 'Couldn't find a version that satisfies the requirement vtk'.

Poul Riis