做到这一点的***方法是使用ix_函数:请参见

The best way to do this is to use the ix_ function: see the answer by MSeifert for details.

或者，您可以通过x和y使用链式索引操作:

Alternatively, you could use chain the indexing operations using x and y:

>>> A[x][:,y]
array([[ 2,  4,  5],
       [12, 14, 15]])

第一个x用于选择A的行.接下来，[:,y]选择由y的元素指定的子数组的列.

First x is used to select the rows of A. Next, [:,y] picks out the columns of the subarray specified by the elements of y.

在这种情况下，链接是对称的:如果愿意，还可以先使用A[:,y][x]选择列.

The chaining is symmetric in this case: you can also choose the columns first with A[:,y][x] if you wish.