# -*- coding: utf-8 -*-

import random

#成績管理系統(tǒng)

score={}

#錄入成績

score={"數(shù)學(xué)":{"小明":90,"剛子":80,"學(xué)霸":90},

"語文":{"小明":92,"剛子":81,"學(xué)霸":95},

"英語":{"小明":94,"剛子":83,"學(xué)霸":96},

"物理":{"小明":random.randint(60,100),"剛子":random.randint(60,100),"學(xué)霸":random.randint(80,100)},

"化學(xué)":{"小明":random.randint(60,100),"剛子":random.randint(60,100),"學(xué)霸":random.randint(80,100)},

"生物":{"小明":random.randint(60,100),"剛子":random.randint(60,100),"學(xué)霸":random.randint(80,100)},

}

#查詢

'''

print("按照科目查詢：")

course=input("請輸入科目：\n")

print(score[course])

print("按照科目和姓名查詢：")

course=input("請輸入科目：\n")

stu_name=input("請輸入學(xué)生姓名：\n")

print(score[course][stu_name])

print("按照姓名查詢：")

stu_name=input("請輸入姓名：\n")

for k in ["數(shù)學(xué)","語文","英語","物理","化學(xué)","生物"]:

print(stu_name,':',score[k][stu_name])

#統(tǒng)計

sum=0

print("按照姓名統(tǒng)計：")

stu_name=input("請輸入姓名：\n")

for k in ["數(shù)學(xué)","語文","英語","物理","化學(xué)","生物"]:

sum+=score[k][stu_name]

print(stu_name,'的總分:',sum)

print(stu_name,'的平均分:',sum/6)

#輸出所有學(xué)生總分和平均分

print("輸出所有學(xué)生總分和平均分\n")

course_list=["數(shù)學(xué)","語文","英語","物理","化學(xué)","生物"]

stu_list=["小明","剛子","學(xué)霸"]

for stu in stu_list:

total=0

for cou in course_list:

total+=score[cou][stu]

print(stu,"總分：",total," ",stu,"平均分：",total/6)

'''

#所有學(xué)生總分排名

print("輸出所有學(xué)生總分排名\n")

total_dict={}

course_list=["數(shù)學(xué)","語文","英語","物理","化學(xué)","生物"]

stu_list=["小明","剛子","學(xué)霸"]

#？？

for stu in stu_list:

total=0 #？？

for cou in course_list:

total+=score[cou][stu]

total_dict[stu]=total#？？

#用匿名函數(shù)lambda函數(shù)獲取字典的值

jieguo=[]

jieguo=sorted(total_dict.items(),key=lambda x:x[1],reverse=True)

print(jieguo)

#用operator.itemgetter函數(shù)獲取字典的值

import operator

print(sorted(total_dict.items(), key=operator.itemgetter(1),reverse=True))

總結(jié)

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