I'm involved in a raspberry pi project and I use python language. I installed scipy, numpy, matplotlib and other libraries correctly. But when I type 
from scipy.io import wavfile 
it gives error as "ImportError: No module named scipy.io"
I tried to re-install them, but when i type the sudo cord, it says already the new version of scipy is installed. I'm stucked in this point and please help me... Thank you
I would take a guess and say your Python doesnt know where you isntalled scipy.io. add the scipy path to PYTHONPATH.
Import error when using scipy.io module