python求加权平均值的实例(附纯python写法)

#需要求加权平均值的数据列表elements = []#对应的权值列表weights = []

import numpy as np np.average(elements, weights=weights)

# 不使用numpy写法1round(sum([elements[i]*weights[i] for i in range(n)])/sum(weights), 1) # 不使用numpy写法2round(sum([j[0]*j[1] for j in zip(elements, weights)])/sum(weights), 1)