Other useful libraries include NumPy, Scipy, Scikit, PIL/Pillow, SimpleCV, Mahotas, SimpleITK, pgmagick, and Pycairo. Each library has its own unique set of features, advantages, and disadvantages.

To manipulate images in Python, you need the aptly named Python Imaging Library (PIL). Unfortunately, PIL development seems to have stopped sometime in 2009 and while it technically still works ...