获取按姓氏排序的不同名称

def quick_sort(names):
    if len(names) <= 1:
        return names
    pivot = names[0]
    left = [name for name in names[1:] if name.split()[0] < pivot.split()[0]]
    right = [name for name in names[1:] if name.split()[0] >= pivot.split()[0]]
    return quick_sort(left) + [pivot] + quick_sort(right)

names = ['张三', '李四', '王五', '赵六', '陈七', '刘八', '杨九', '黄十']
sorted_names = quick_sort(names)