首先，我需要随机生成一个班级20人的成绩，语文，数学，英文，满分100，最低分0 任务是：按照总分进行排序，从高到低，总分相同以数学成绩为主，都相同则以学号。

随机生成学生的数据

import random

#学号以 1001
print(random.randint(0,100)) #随机生成[0,100]之间的任意一个整数

chinese_names = [
        "张三", "李四", "王五", "赵六", "孙七", "孙八", "王九", "赵十",
        "钱十一", "赵十二", "陈十三", "孙十四", "李十五", "周十六", "吴十七",
        "王十八", "赵十九", "赵二十", "赵二十一", "赵二十二", "赵二十三",
        "赵二十四", "赵二十五", "赵二十六", "赵二十七", "赵二十八", "赵二十九",
        "赵三十", "赵三十一", "赵三十二", "赵三十三", "赵三十四", "赵三十五"
    ]

# print(random.sample(chinese_names, 20))
name_list = random.sample(chinese_names, 20) #随机选取20个名字
f = open('score.txt', w)

for i in range(20):
    ID = '100' + str(i)
    name = name_list[i]
    english = random.randint(0,100)
    math = random.randint(0,100)
    chinese = random.randint(0,100)
    f.write( '%s,%s,%d,%d,%d' %(ID,name,english,math,chinese)  )

f.colse()

排序代码

import random

f = open('score.txt', 'r')
lines = f.readlines()

result = []
for line in lines :
    id, name, eng , math, chi = line.split(',')
    dic = {}
    dic['id'] = int(id)
    dic['name'] = name
    dic['english'] = eng
    dic['math'] = math
    dic['chinese'] = chi
    dic['total'] = int(eng) + int(math) + int(chi)

    result.append(dic)
f.close()
result.sort(key =  lambda x : -x['total'] )

f1 = open('report.txt', "w")

for info in result:
    f1.write('%5s,%-8s,%5s,%5s' % (info['id'], info['name'], info['total'], info['math']))
    f1.write('\n')
f1.close()

—— 本文来自火龙信奥（义乌睿码科技）：义乌青少年信息学奥赛与编程教育平台，专注 CSP-J/S、NOIP、GESP 竞赛培训，线上线下融合教学，助力编程升学。网址：hlcoding.com