第17 步：我们需要更改每个精灵的旋转。我们可以在遍历我们的精灵列表时做到这一点。
每次循环运行时， rotate会增加 30，这会导致下一个精灵在世界范围内旋转得更远。
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stage.set_background_color("lightblue")
# sprite = codesters.Rectangle(x, y, width, height, "color")
sprite = codesters.Rectangle(0, 0, 700, 100, "gold")
sprite.turn_left(45)
# sprite = codesters.Rectangle(x, y, width, height, "color")
sprite = codesters.Rectangle(0, 0, 700, 100, "gold")
sprite.turn_right(45)
sprite = codesters.Sprite("earth")
people_sprites = ['person1', 'person2', 'person3', 'person4', 'person5', 'person6',
'person7', 'person8','person9', 'person10', 'person11', 'person12']
rotate = 90
for value in people_sprites:
# add code here
sprite = codesters.Sprite(value)
stage.wait(0.5)
sprite.set_size(0.3)
sprite.set_speed(5)
sprite.move_forward(120)
sprite.turn_right(90)
sprite.rotate_origin(rotate)
