means pillow is expecting tuple of four integer coordinates that represent rectangular region in an image the four integers arein orderas followsleft the -coordinate of the leftmost edge of the box top the -coordinate of the top edge of the box right the -coordinate of one pixel to the right of the rightmost edge of the box this integer must be greater than the left integer bottom the -coordinate of one pixel lower than the bottom edge of the box this integer must be greater than the top integer note that the box includes the left and top coordinates and goes up to but does not include the right and bottom coordinates for examplethe box tuple ( represents all the pixels in the black box in figure - figure - the area represented by the box tuple ( manipulating images with pillow now that you know how colors and coordinates work in pillowlet' use pillow to manipulate an image figure - is the image that will be used for all the interactive shell examples in this you can download it from once you have the image file zophie png in your current working directoryyou'll be ready to load the image of zophie into pythonlike sofrom pil import image catim image open('zophie png'to load the imageimport the image module from pillow and call image open()passing it the image' filename you can then store the loaded image in variable like catim pillow' module name is pil to make it backward compatible with an older module called python imaging librarythis is why you must run from pil import image instead of from pillow import image because of the way pillow' creators set up the pillow moduleyou must use the import statement from pil import imagerather than simply import pil