EXTEND：现在修改和扩展您的程序！请务必满足以下最低技术要求：
- 让用户选择一个或多个索引来混淆字符。提示：尝试使用 Ask for Integer
- 创建一个图像标签列表作为混合角色的朋友或宠物。将您的新列表friend_list 。
- 使用列表和索引从新列表中获取图像标签。不要忘记使用新的.Sprite()命令。
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########################################################################
# PLACE LIST CREATIONS HERE #
########################################################################
stage_list = ["moon", "mars", "jupiter", "pluto", "space", "city"]
head_list = ["head1", "head2", "head3", "head4", "head5", "head6"]
body_list = ["middle1", "middle2", "middle3", "middle4", "middle5", "middle6"]
legs_list = ["legs1", "legs2", "legs3", "legs4", "legs5", "legs6"]
########################################################################
# PLACE ALL OTHER CODE BELOW THIS #
########################################################################
stage_image = stage_list[1]
stage.set_background(stage_image)
random_head = random.randint(0, 5)
head_image = head_list[random_head]
# sprite = codesters.Sprite("image", x, y)
head = codesters.Sprite(head_image, 0, 83)
random_body = random.randint(0, 5)
body_image = body_list[random_body]
# sprite = codesters.Sprite("image", x, y)
body = codesters.Sprite(body_image, 0, 0)
legs_index = int(head.ask("Choose an index between 0 and 5."))
legs_image = legs_list[legs_index]
# sprite = codesters.Sprite("image", x, y)
legs = codesters.Sprite(legs_image, 0, -83)
