Np.eye

Np.eye

import numpy as np
 
a=np.eye(3)
print(a)
 
a=np.eye(4,k=1)
print(a)
 
a=np.eye(4,k=-1)
print(a)
 
a=np.eye(4,k=-3)
print(a)

1

Source: blog.csdn.net

Np.eye(5)[list]

>>np.eye(3)
array([[ 1.,  0.,  0.],
   [ 0.,  1.,  0.],
   [ 0.,  0.,  1.]])
>>> np.eye(3)[1]
array([ 0.,  1.,  0.])

0

Source: stackoverflow.com

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