This constructor has nothing to do but call its parent
constructor and pass it the names of the model and its
parameters. Refer to Section 7, “class ColorModel: Base class for color
models”.
# - - - H S V M o d e l . _ _ i n i t _ _
def __init__ ( self ):
ColorModel.__init__ ( self, "HSV",
("hue", "saturation", "value") )