Python save numpy array set_printoptions

Question

I have an image which I've read in with cv2 and python. - I think I'm going to 'store' the image as a nparray in my db for later processing, easy retrieval etc.

What's the difference between just

img = cv2.resize(img, dim, interpolation=cv2.INTER_AREA)
print(img)

and this:

np.set_printoptions(threshold=np.inf)
print(img)

The latter being a much much larger array for some reason which I do not yet understand.