I am creating a small level designer in Python (using PyGame). The program is supposed to just let you place down an image, change between images, export to a PNG file, and exp
blits((source, dest, area), ...)) -> (Rect, ...) you are missing out the destination. Read here
And if you are making use of coordinates then use square brackets [x-co,y-co] like this:
block.blit(image,[0,0])