code: def cmyk_to_cmy(c, m=None, y=None, k=None):
    
    if type(c) in [list,tuple]:
      c, m, y, k = c
    mk = 1-k
    return ((c*mk + k), (m*mk + k), (y*mk + k))
docs: Convert the color from CMYK coordinates to CMY.
  
    Parameters:
      :c:
        The Cyan component value [0...1]
      :m:
        The Magenta component value [0...1]
      :y:
        The Yellow component value [0...1]
      :k:
        The Black component value [0...1]
  
    Returns:
      The color as an (c, m, y) tuple in the range:
      c[0...1],
      m[0...1],
      y[0...1]
  
    >>> '(%g, %g, %g)' % cmyk_to_cmy(1, 0.32, 0, 0.5)
    '(1, 0.66, 0.5)'