NumPy笔记：创建ndarray数组（zeros,ones,full,*_like,eye,identity

"""
    创建ndarray数组（zeros,ones,full,*_like,eye,identity）
"""
import numpy as np
print("zeros:", np.zeros([1, 3]))
print("ones:", np.ones([1, 3]))
print("full:", np.full([1, 3], 7))
print("ones_like", np.ones_like(np.zeros([1, 3])))
print("eye:", np.eye(3, 3, 0))
print("identity:", np.identity(3))
 

 

zeros: [[0. 0. 0.]]
ones: [[1. 1. 1.]]
full: [[7 7 7]]
ones_like [[1. 1. 1.]]
eye: [[1. 0. 0.]
 [0. 1. 0.]
 [0. 0. 1.]]
identity: [[1. 0. 0.]
 [0. 1. 0.]
 [0. 0. 1.]]