请问python中如何删除二维列表中值全部为指定数的一列？

Question

二维列表list=
[[0,0,0,0,0,0,1,0]
[1,1,0,1,0,1,1,1]
[0,0,0,1,0,0,1,0]
[1,0,0,0,0,0,1,1]
[1,1,0,1,0,1,1,1]
[1,1,0,1,0,0,1,1]
[1,0,0,0,0,1,1,0]
[0,0,0,0,0,0,0,0]]
其中第三和第五列全部都是0了，则删除这两列。

Answer 1

建议：变量名尽量不要和关键字或内部函数相同，你用list当变量名很容易出问题
import numpy as py
arr=np.array([[0,0,0,0,0,0,1,0]
,[1,1,0,1,0,1,1,1]
,[0,0,0,1,0,0,1,0]
,[1,0,0,0,0,0,1,1]
,[1,1,0,1,0,1,1,1]
,[1,1,0,1,0,0,1,1]
,[1,0,0,0,0,1,1,0]
,[0,0,0,0,0,0,0,0]])
arr=arr[:,arr.sum(0)>0]
print(arr)