python - 删除嵌套列表中的重复项(不删除子列表中的重复元素)

Question

我正在尝试从如下所示的嵌套列表中删除重复的子列表:

result_set = [
    ['MEMS', 'MEMS', 'MEMS', 'MEMS'],
    ['Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics'],
    ['Microfabrication', 'Microfabrication', 'Microfabrication', 'Clean-Room Microfabrication', 'Microfabrication', 'Microfabrication'],
    ['Photolithography', 'Photolithography', 'Lithography', 'Photolithography'],
    ['MEMS', 'MEMS', 'MEMS', 'MEMS']
    ]

我想要的输出如下:

result_set = [
    ['MEMS', 'MEMS', 'MEMS', 'MEMS'],
    ['Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics'],
    ['Microfabrication', 'Microfabrication', 'Microfabrication', 'Clean-Room Microfabrication', 'Microfabrication', 'Microfabrication'],
    ['Photolithography', 'Photolithography', 'Lithography', 'Photolithography']
    ]

请注意，基本上最后一个元素 ['MEMS'、'MEMS'、'MEMS'、'MEMS'] 不再存在。 Similar questions已被询问，我从那里改编了以下代码:

result_set = set(frozenset(x) for x in result)
lst = [list(x) for x in result_set]

我的问题是我得到以下输出:

 result_set = [['MEMS'], ['Microfluidics'], ['Microfabrication', 'Clean-Room Microfabrication'], ['Photolithography', 'Lithography']]

请注意，它还会删除子列表中的重复元素。我不想要这个，因为我之后的目标是绘制直方图。举例来说 -> MEMS 有 4 次出现。因此，我想跟踪每个子列表最初拥有的元素数量。

Answer 1

如果顺序不重要，您可以使用集合:

final_data = list(map(list, set(map(tuple, result_set))))

输出:

[['Microfabrication', 'Microfabrication', 'Microfabrication', 'Clean-Room Microfabrication', 'Microfabrication', 'Microfabrication'], ['Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics'], ['Photolithography', 'Photolithography', 'Lithography', 'Photolithography'], ['MEMS', 'MEMS', 'MEMS', 'MEMS']]

如果顺序很重要，您可以尝试以下操作:

final_data = []
for result in result_set:
    if result not in final_data:
         final_data.append(result)

输出:

[['MEMS', 'MEMS', 'MEMS', 'MEMS'], ['Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics', 'Microfluidics'], ['Microfabrication', 'Microfabrication', 'Microfabrication', 'Clean-Room Microfabrication', 'Microfabrication', 'Microfabrication'], ['Photolithography', 'Photolithography', 'Lithography', 'Photolithography']]