numpy科学计算器库入门8 numpy的浅拷贝与深拷贝

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import numpy as np
arr1 = np.array([1,2,3])
arr2 = arr1#浅拷贝 arr1 arr2共享一块内存
arr2[0] = 5
print(arr1)
print(arr2)

[5 2 3]
[5 2 3]

arr3 = arr1.copy()#深拷贝
arr3[0] = 34
print(arr1)
print(arr3)

[5 2 3]
[34  2  3]