How to make a checkerboard in numpy?

Question

I\'m using numpy to initialize a pixel array to a gray checkerboard (the classic representation for \"no pixels\", or transparent). It seems like there ought to be a whizzy

Answer 1

def checkerboard(shape):
    return np.indices(shape).sum(axis=0) % 2

Most compact, probably the fastest, and also the only solution posted that generalizes to n-dimensions.