label[:, -1, ...]
时间: 2024-05-29 21:11:12 浏览: 81
This code selects all elements in the last dimension of a NumPy array `label` that are in the last but one dimension. The `:` specifies that all elements in the first dimension and the second-to-last dimension should be selected. The `-1` index specifies the last element in the second-to-last dimension. The `...` is a shorthand in NumPy for selecting all remaining dimensions.
For example, if `label` is a 3-dimensional array with shape `(2, 3, 4)`, then `label[:, -1, ...]` will select all elements in the last dimension that are in the second-to-last dimension, resulting in an array of shape `(2, 4)`.