It doesn't actually hang. The reason it takes so long in your case is that the private keys are encrypted using scrypt and you only have the software implementation of scrypt installed. You can fix this by installing:
pip3 install scrypt
If that's not working try:
pip install https://pypi.python.org/packages/7d/fc/3e65f21be05f5f1bafa8f2262fea474c6dd84cc7dc226d453dd488675305/scrypt-0.7.1-cp34-none-win32.whl
Ha... i figured there was a much simpler way. Glad i posted, though hopefully it'll help out the next guy googling around like a tool box. Edited the OP to reflect your reply.