如何在python中将3D列表转换为2D列表? [英] How can I convert a 3D list into a 2D list in python?

问题描述

这是我的代码:

[[[3], [4]], [[5], [6]], [[7], [8]]]

如何将其更改为:

[[3], [4], [5], [6], [7], [8]]

?

推荐答案

您想展平输入列表的单个级别，请使用列表理解功能尝试以下解决方案:

You want to flatten a single level of the input list, try this solution using a list comprehension:

lst = [[[3], [4]], [[5], [6]], [[7], [8]]]
[e for sl in lst for e in sl]
=> [[3], [4], [5], [6], [7], [8]]

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