On the terminal

# download<br /> curl -O -L http://effbot.org/downloads/Imaging-1.1.7.tar.gz<br /> # extract<br /> tar -xzf Imaging-1.1.7.tar.gz<br /> cd Imaging-1.1.7<br /> # build and install<br /> python setup.py build<br /> sudo python setup.py install<br /> # or install it for just you without requiring admin permissions:<br /> # python setup.py install --user<br />

source: http://stackoverflow.com/questions/9070074/how-to-install-pil-on-mac-os-x-10-7-2-lion