[英]Possible Combination of Lists inside a Single List
Given List给定清单
[[1,2],[3,4],[5,6]]
I want output as 3 different list as follows我希望输出为 3 个不同的列表,如下所示
[1,2,3,4],[3,4,5,6],[1,2,5,6]
You can use itertools.combinations
to get all possible pairs您可以使用itertools.combinations
来获取所有可能的对
a = [[1, 2], [3, 4], [5, 6]]
>>> list(itertools.combinations(a, 2))
[([1, 2], [3, 4]), ([1, 2], [5, 6]), ([3, 4], [5, 6])]
To flatten the individual elements just map over them and add the two lists要展平单个元素,只需映射它们并添加两个列表
>>> list(map(lambda x: x[0] + x[1], itertools.combinations(a, 2)))
[[1, 2, 3, 4], [1, 2, 5, 6], [3, 4, 5, 6]]
Simply Use Enumerate Function,只需使用枚举函数,
>>> x=[[1,2],[3,4],[5,6]]
>>> z = [x[index-len(x)] + x[index+1 - len(x)] for index, rec in enumerate(x)]
>>> z
>>> [[1, 2, 3, 4], [3, 4, 5, 6], [5, 6, 1, 2]]
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