After a bit of googling around, I see this issue is pretty common but has no direct answers.
Trying to use Pycrypto on my Mac 10.8.5. Installed it through Pip, Easy_install, and manually with setup.py yet when I try to import it, it says it can't find the module. 
Anyone else have an issue like this?
I've had this problem before, and this is because you probably have different versions of Python. So, in fact, the package is installed, but for a separate version. What you need to do is see which executable file is linked to when python or pip is called.
Python - Crypto.Cipher/Pycrypto on Mac?