This constructor calls the parent class constructor and
supplies the name of the model and the names of its three
parameters. See Section 7, “class ColorModel: Base class for color
models”.
# - - - C M Y M o d e l . _ _ i n i t _ _
def __init__ ( self ):
"""Constructor for CMYModel."""
ColorModel.__init__ ( self, "CMY",
("cyan", "yellow", "magenta") )