1. Install Python 2.4.3 (or the same version as your Abaqus runs)
2. Install the appropriate versions of numpy and scipy compatible with Python 2.4.3
3. Create a Custom\Python24\Lib\site-packages directory in your root Abaqus directory. e.g c:\abaqus\custom\Python24\Lib\site-packages
4. Copy the numpy and scipy directories in c:\Python24\Lib\site-packages to c:\abaqus\custom\Python24\Lib\site-packages
As a side note, make sure your import numpy, scipy, scipy.io line appears before the “from odbAccess import *” line in your script file.
An alternative procedure is to do Steps 1 and 2 above and then add a line “PYTHONPATH=c:\Python24\Lib\site-packages” to the abaqus environment file. however, this didn’t work for me.