如何修复 AttributeError：模块 'numpy' 没有属性 'across'

Question

我的代码和输入

import numpy as np
x = np.array([0.707,0.707,0.0])
y = np.array([0.866,0.5,0.0])
xmag = np.linalg.norm(x) #norm of vector
ymag = np.linalg.norm(y)
theta_radians = np.across(np.dot(x,y) / (xmag*ymag))
theta_degrees=(180.0/np.pi)*theta_radians
print(theta_degrees)

如何修复我得到的错误，我正在尝试获取两个向量之间的角度