import numpy as np a=np.arange(6) print(a) print(a.argmax()) print(a[1:]) print(a[4::-1]) print(a[::2]) print(a[a%3==0]) a[a%3==0]=0 print(a) print(np.unique(a))
[0 1 2 3 4 5] 5 [1 2 3 4 5] [4 3 2 1 0] [0 2 4] [0 3] [0 1 2 0 4 5] [0 1 2 4 5]
import numpy as np a=np.arange(6).reshape(3,-1) a1=np.expand_dims(a,axis=0) a2=np.squeeze(a1,axis=0) print('a1='+ str(a1)) print('a2='+ str(a2))