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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def render_obs(self, obs):
 """Render a frame given an observation."""

    start_time = time.time()
    self._obs = obs
    self.check_valid_queued_action()
    self._update_camera(point.Point.build(
        self._obs.observation.raw_data.player.camera))

    for surf in self._surfaces:
      # Render that surface.
      surf.draw(surf)

    mouse_pos = self.get_mouse_pos()
    if mouse_pos:
      # Draw a small mouse cursor
      self.all_surfs(_Surface.draw_circle, colors.green, mouse_pos.world_pos,
                     0.1)

    self.draw_actions()

    with sw("flip"):
      pygame.display.flip()

    self._render_times.append(time.time() - start_time)