import sys
from PIL import Image
# convert a PNG file into Nonads
START = 0o60

def rgb2nonad(r,g,b):
    return str((r & 0xe0) >> 5 ) + \
    str((g & 0xe0) >> 5 ) + \
    str((b & 0xe0) >> 5 )

args = sys.argv
with Image.open(args[1]) as im:
    w, h = im.size
    rgb_im = im.convert('RGB')
    pixels = list(rgb_im.getdata())
    #ary = [pixels[n:n+w] for n in range(0, w*h, w)]
    adr = START
    for p in pixels:
        (r,g,b) = p
        fmt_adr = "{:03o}".format(adr)
        print (f'{fmt_adr}: {rgb2nonad(r,g,b)}')
        adr = adr + 1
    im.close()