1>>>import numpy as np
2>>> X = np.arange(0,3*3,1).reshape(3,3)3>>> X
4array([[0,1,2],5[3,4,5],6[6,7,8]])7>>> X[:,0]8array([0,3,6])9>>> X.T[0]10array([0,3,6])11>>> X[:,1]12array([1,4,7])13>>> X.T[1]14array([1,4,7])
1>>>import numpy as np
2>>> X = np.arange(0,3*3*3,1).reshape(3,3,3)3>>> X
4array([[[0,1,2],5[3,4,5],6[6,7,8]],78[[9,10,11],9[12,13,14],10[15,16,17]],1112[[18,19,20],13[21,22,23],14[24,25,26]]])15>>> X[:,:,0]16array([[0,3,6],17[9,12,15],18[18,21,24]])19>>> X[:,:,1]20array([[1,4,7],21[10,13,16],22[19,22,25]])