code: def draw(self, clear=True):
          
          if clear:
              self.clear()
  
          with self.gl_states, self.camera, self.light:
              for mesh in self.meshes:
                  try:
                      mesh.draw()
                  except AttributeError:
                      pass
docs: Draw each visible mesh in the scene from the perspective of the scene's camera and lit by its light.