1 import numpy as np 2 3 features = np.array([[1,2,3],[4,5,6],[7,8,9]]) 4 components = [True,True,True] 5 features = features[:, components] 6 print(features) 7 fea = np.array([[1,2,3],[4,5,6],[7,8,9]]) 8 components = [True,False,True] 9 fea = fea[:, components] 10 print(fea)
结果：
[[1 2 3]
[4 5 6]
[7 8 9]]
[[1 3]
[4 6]
[7 9]]