[英]Flatten 3d list to 2d in python
So I have a list of lists in python that is something like this: 所以我在python中有一个列表列表,就像这样:
[[[0, 1, 0, 1, 0]]
[[1, 1, 1, 1, 1]]
[[1, 0, 0, 1, 1]]
[[0, 1, 0, 0, 0]]]
I want to flatten this list and end up with this: 我想弄平这个列表并以这个结尾:
[[0, 1, 0, 1, 0]
[1, 1, 1, 1, 1]
[1, 0, 0, 1, 1]
[0, 1, 0, 0, 0]]
Is there a straightforward way to do this in python? 有没有一种简单的方法可以在python中做到这一点?
a = [[[0, 1, 0, 1, 0]],
[[1, 1, 1, 1, 1]],
[[1, 0, 0, 1, 1]],
[[0, 1, 0, 0, 0]]]
[i[0] for i in a]
output 产量
[[0, 1, 0, 1, 0], [1, 1, 1, 1, 1], [1, 0, 0, 1, 1], [0, 1, 0, 0, 0]]
Using numpy.squeeze you can do what you want: 使用numpy.squeeze您可以执行所需的操作:
import numpy as np
a = np.array([[[0, 1, 0, 1, 0]],
[[1, 1, 1, 1, 1]],
[[1, 0, 0, 1, 1]],
[[0, 1, 0, 0, 0]]])
a.squeeze()
[[0 1 0 1 0]
[1 1 1 1 1]
[1 0 0 1 1]
[0 1 0 0 0]]
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.