取消嵌套嵌套列表

Question

嗨,我想知道如何取消嵌套嵌套嵌套列表.我有:

list = [[[1,2,3]], [[4,5,6]], [[7,8,9]]]

我想看看如下:

new_list = [[1,2,3], [4,5,6], [7,8,9]]

怎么做？

Answer 1

>>> L = [[[1,2,3]], [[4,5,6]], [[7,8,9]]]
>>> [x[0] for x in L]
[[1, 2, 3], [4, 5, 6], [7, 8, 9]]