First install spidev:
Enable SPI (sudo raspi-config)
$ sudo apt-get update
$ sudo apt-get upgrade
$ sudo apt-get install python-dev
$ sudo reboot
$ wget https://github.com/doceme/py-spidev/archive/master.zip
$ unzip master.zip
$ cd py-spidev-master
$ sudo python setup.py install
This just a customized fork for my needs