np小函数

 

 

 

按照面积排序

from scipy.cluster.vq import kmeans
import numpy as np

new_anchor = np.arange(0,9).reshape(3,3)
print(new_anchor)
print(new_anchor.prod(axis =1))
print(new_anchor.prod(axis =1).argsort())
print(new_anchor[new_anchor.prod(axis =1).argsort()])