如何计算 function 中 GPA 的平均值？

Question

在程序中，我想先从csv文件中只读取每个人的分数，然后在function中，先计算每个人的平均值，再计算所有成绩的平均值。

csv file:
mandana,5,7,3,15
hamid,3,9,4,20,9,1,8,16,0,5,2,4,7,2,1
sina,19,10,19,6,8,14,3
sara,0,5,20,14
soheila,13,2,5,1,3,10,12,4,13,17,7,7
ali,1,9
sarvin,0,16,16,13,19,2,17,8

my code:

import csv

from statistics import mean

def sss():
     with open(r'C:\Users\Mobin\Desktop\test_project\reders.csv') as js:
        s = csv.reader(js)
        ld = []
        for l in s:
            ld.append(l[1:])
        print(mean(ld))
sss()

output:
8.401530612244898

请帮我写程序

Answer 1

这可能会帮助您：

import csv
from statistics import mean

def avg(row):
    row = [ int(x) for x in row[1:] ]
    return mean(row)

csv_file = csv.reader(open('reders.csv'))

for row in csv_file:
    print(row[0], avg(row))

输出：

mandana 7.5
hamid 6.066666666666666
sina 11.285714285714286
sara 9.75
soheila 7.833333333333333
ali 5
sarvin 11.375