I have a problem based on  "../sfepy/examples/multi_physics/biot.py".

In the attached scripy 'block2.py', I have calculated the stress and strain according to the displacement, at the 111 and 112 lines you can see it.

Now I want to output the K of every cell, I gave a value of k at the 64 line in this script, it is a 3*3 array.

I don't know which function or equation to use, so I was stucked at the 113 line. 

if I change the K value,  will where be some difference results?

Thank you advance

K.