我有一个这样的列表:
i = [[1, 2, 3], [2, 4, 5], [1, 2, 3], [2, 4, 5]]
我想获得一个包含唯一"列表(基于它们的元素)的列表,例如:
I would like to get a list containing "unique" lists (based on their elements) like:
o = [[1, 2, 3], [2, 4, 5]]
我不能使用 set()
因为列表中有不可散列的元素.相反,我正在这样做:
I cannot use set()
as there are non-hashable elements in the list. Instead, I am doing this:
o = []
for e in i:
if e not in o:
o.append(e)
有更简单的方法吗?
你可以创建一组元组,一组列表是不可能的,因为你提到了不可散列的元素.
You can create a set of tuples, a set of lists will not be possible because of non hashable elements as you mentioned.
>>> l = [[1, 2, 3], [2, 4, 5], [1, 2, 3], [2, 4, 5]]
>>> set(tuple(i) for i in l)
{(1, 2, 3), (2, 4, 5)}
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