def makedelta(fp, sequence):
 previous = None
 for im in sequence:
  if (not previous):
   for s in (getheader(im) + getdata(im)):
    fp.write(s)
  else:
   delta = ImageChops.subtract_modulo(im, previous)
   bbox = delta.getbbox()
   if (not bbox):
    bbox = (0, 0, 1, 1)
   for s in getdata(im.crop(bbox), offset=bbox[:2]):
    fp.write(s)
  previous = im.copy()
 fp.write(';')

def makedelta ( fp , sequence ) : previous = None for im in sequence : if ( not previous ) : for s in ( getheader ( im ) + getdata ( im ) ) : fp . write ( s ) else : delta = ImageChops . subtract_modulo ( im , previous ) bbox = delta . getbbox ( ) if ( not bbox ) : bbox = ( 0 , 0 , 1 , 1 ) for s in getdata ( im . crop ( bbox ) , offset = bbox [ : 2 ] ) : fp . write ( s ) previous = im . copy ( ) fp . write ( ';' )
convert list of image frames to a gif animation file .