ArcGIS 10.1, Python crash on "import arcpy" after installing scipy-stack.

Question

I'm having a frustrating time trying to use scipy with arcpy in my arcgis project.

I'm able to successfully install the scipy-stack (Scipy-stack-13.8.17.win32-py2.7) binary from here, but once It's installed, python crashes ("python.exe has stopped working") as soon as I run import arcpy.

However, if I import scipy prior to importing arcpy, arcpy is imported successfully. In other words, this works:
import scipy
import arcpy

but this doesn't:
#import scipy
import arcpy #"python.exe has stopped working" here

It looks to me like the actual crash occurs on line 269 of "ArcGIS\Desktop10.1\arcpy\arcpy\geoprocessing\_base.py," when something called "Data Reviewer Tools.tbx" is being imported (from "ArcGIS\ArcGISDataReviewer\Desktop10.1\ArcToolbox\Toolboxes\Data Reviewer Tools.tbx").

Does anyone know why this is happening?

TIA,

Tom.

Luke_Pinner · Answer

Out of curiosity, how did you know about the 0.10.1 requirement? I wasn't able to find a version requirement when I looked.

Googlefoo 😉

TomRutherford · Answer

Seems I spoke a little too soon. With scipy 0.10.1, I encountered ValueError: numpy.dtype has the wrong size, try recompiling

when I tried to import stats from scipy.

With scipy 0.11.0 installed however, things are working. So, it looks to me like the correct versions are:scipy.__version__
'0.11.0'
numpy.__version__
'1.6.1'

TomRutherford · Answer

Hi lpinner.

I was actually already running numpy 1.6.1, but downgrading to scipy 0.10.1 seems to have solved the issue. Thanks for the link.

Out of curiosity, how did you know about the 0.10.1 requirement? I wasn't able to find a version requirement when I looked.

Thanks again.