import random

class Student:
    def __init__(self, name, sno, sex, age):
        self.name = name
        self.sno = sno
        self.sex = sex
        self.age = age
        self.score = dict()
        self.total_score = 0

    def update_score(self, course, score):
        self.score[course] = score
        self.total_score += score

    def get_avg(self):
        return self.total_score / len(self.score)

if __name__ == "__main__":
    stu = dict()
    with open('data.csv', 'r') as f:
        lines = f.readlines()
        for index, l in enumerate(lines):
            if index == 0:
                continue
            w = l.split(',')
            if len(w) > 1:
                s = Student(w[1], w[0], w[2], w[3])
                stu[w[1]] = s
    with open('score.csv', 'r') as f:
        lines = f.readlines()
        for index, l in enumerate(lines):
            if index == 0:
                continue
            w = l.split(',')
            if len(w) > 1:
                stu[w[1]].update_score(w[2], eval(w[3]))
    stu = list(stu.values())
    stu.sort(key=lambda x : x.get_avg())
    for s in stu:
        print("name:{}, avg:{}".format(s.name, s.get_avg()))