def __call__(self, keys):

        c = self._c
        try:
            return tuple(c["rgba".index(k)] for k in keys)
        except __HOLE__:
            raise IndexError("Keys must be one of r, g, b, a")
dataset/ETHPy150Open PythonProgramming/Beginning-Game-Development-with-Python-and-Pygame/gameobjects/color.py/ColorRGBA.__call__