Python数组索引
Python数组索引
数组索引import numpy as npa = np.array( [[1,2,3], [4,5,6], [7,8,9]])print(a[:,2])print(a[:,[2,1]])print(a[[2,1],[2,1]])print(a[[2,1]],'\n')t = (2,1)n1 = np.array(2)n2 = np.array([2,1])print('t',a[t])print(n1.shape)print(a[n1])p


