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8 年
不改变排序 Python去除列表重复元素的方法
dict.fromkeys () 和 set () 方法 都简单快速,但不保留原顺序; 排序 后逆向遍历删除的 方法 可保持顺序,不过效率相对较低。 实际开发中,若对顺序无要求,set () 或 dict.fromkeys () 更佳;若需保持原顺序,只能选择第三种 方法,需权衡性能与功能需求。
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