从列表列表中获取唯一的项目？ [英] Get unique items from list of lists?

问题描述

我有一个这样的列表：

animal_groups = [['fox','monkey', 'zebra'], ['snake','elephant', 'donkey'],['beetle', 'mole', 'mouse'],['fox','monkey', 'zebra']]

什么是最好删除重复列表？使用上面的例子，我正在寻找可以产生这样的代码：

What is the best to remove duplicate lists? Using the above example, I am looking for code that would produce this:

uniq_animal_groups = [['fox','monkey', 'zebra'], ['snake','elephant', 'donkey'],['beetle', 'mole', 'mouse']]

我第一次以为可以使用 set（），但这似乎在列表列表中不起作用。我也看到一个例子，使用 itertools ，但代码对我来说并不完全清楚。感谢您的帮助！

I first thought I could use set(), but this doesn't appear to work on a list of lists. I also saw an example using itertools, but the code was not entirely clear to me. Thanks for the help!

推荐答案

uniq_animal_groups = set(map(tuple, animal_groups))

会做的伎俩，虽然你最终会得到一组元组，而不是一组列表。 （当然，你可以将它转换成列表，但除非有特定的理由这样做，为什么要这么做？）

will do the trick, though you will end up with a set of tuples instead of a set of lists. (Of course you could convert this back to a list of lists, but unless there is a specific reason to do so, why bother?)

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