2.33
import numpy as np
a = np.array([[0, 3, 4],
[1, 6, 4]])
b = np.linalg.norm(a, axis=1)
c = np.linalg.norm(a, axis=0)
d = np.linalg.norm(a)
print('行向量2范数为：', np.round(b, 4))
print('列向量2范数为：', np.round(c, 4))
print('矩阵2范数为：', round(d, 4))
print('3006')