numpy.swapaxes numpy.broadcast numpy.broadcast_to 此函数交换数组的两个轴。对于1.10之后的NumPy版本,将返回交换数组的视图。该函数采用以下参数。 numpy.swapaxes(arr, axis1, axis2) 这里 序号 参数和描述 1 arr 要交换轴的输入数组 2 axis1 对应于第一轴的int 3 axis2 对应于第二轴的int 例 # It creates a 3 dimensional ndarray import numpy as np a = np.arange(8).reshape(2,2,2) print 'The original array:' print a print '\n' # now swap numbers between axis 0 (along depth) and axis 2 (along width) print 'The array after applying the swapaxes function:' print np.swapaxes(a, 2, 0) 其输出如下 The original array: [[[0 1] [2 3]] [[4 5] [6 7]]] The array after applying the swapaxes function: [[[0 4] [2 6]] [[1 5] [3 7]]] numpy.broadcast numpy.broadcast_to