We will use np.arrays to represent images, and matplotlib to display images. We can do this with no additional packages required. However, two common packages for working with images are imageio and ...

As noted above, NumPy arrays behave a lot like other Python objects, for the sake of convenience. For instance, they can be indexed like lists; arr[0] accesses the first element of a NumPy array.

NumPy is known for being fast, but there's always room for improvement. Learn how to use Cython to iterate over NumPy arrays at the speed of C.