Now, modify HelloLights . py with the following lines:
done $=$ False
white $=$ pygame. $\operatorname{Color}(255,255,255)$
glMatrixMode (GL_PROJECTION)
gluPerspective(60, (screen_width / screen_height),
0.1, 100.0)
glMatrixMode(GL_MODELVIEW)
glTranslatef(0.0, 0.0, -3)
glEnable(GL_DEPTH_TEST)
mesh = Cube()