【PPD最終課題】學生資訊管理系統

exam

從控制臺輸入輸出

results.csv

results.csv和exam.py放在同一個檔案夾里

#測驗專用，不上交

A,85,60,77
B,68,30,91
C,48,65,38

exam.py

記得修改提示資訊

class Student:  # 定義一個學生類
    def __init__(self, num, J, M, H):
        self.num = num
        self.J = int(J)
        self.M = int(M)
        self.H = int(H)


def IssearchByNum(stulist, num):  # 按學號查找看是否學號已經存在
    for item in stulist:
        if item.num == num:
            return True


def searchByNum(stulist, num):  # 按學號查找看是否學號已經存在
    for item in stulist:
        if item.num == num:
            print(item.num, "は ", "日本語:", str(item.J),
                  "數學:", str(item.M), "歴史:", str(item.H))
            return True


def Addwhile():  # 添加一個學生資訊
    while True:
        num = input("請輸入學號番號,或者輸入end結束")
        if num == "end":
            break
        J = input("日本語成績")
        M = input("數學成績")
        H = input("歷史成績")

        stu = Student(num, J, M, H)
        if IssearchByNum(stulist, stu.num) == True:
            print("學號已經存在！")
            return False
        stulist.append(stu)


def Del(stulist, num):  # 洗掉一個學生資訊
    for item in stulist:
        if item.num == num:
            stulist.remove(item)
            print("洗掉成功！")
            break


def Save(stulist):  # 保存到文本
    with open("results.csv", "w", encoding="utf-8") as fOut:
        for stu in stulist:
            fOut.write(stu.num+","+str(stu.J)+"," +
                       str(stu.M)+","+str(stu.H)+"\n")
    print("保存成功！")


def CsMax(stulist, course):
    if course == "J":
        stu = sorted(stulist, key=lambda stu: stu.J)[-1]
        print("日本語的最高分",stu.num,"は", str(stu.J))
    elif course == "M":
        stu = sorted(stulist, key=lambda stu: stu.M)[-1]
        print("數學的最高分",stu.num,"は", str(stu.M))
    elif course == "H":
        stu = sorted(stulist, key=lambda stu: stu.H)[-1]
        print("歷史的最高分",stu.num,"は", str(stu.H))
   
    


def CsMin(stulist, course):

    if course == "J":
        stu = sorted(stulist, key=lambda stu: stu.J)[0]
        print("日本語的最低分",stu.num,"は", str(stu.J))
    elif course == "M":
        stu = sorted(stulist, key=lambda stu: stu.M)[0]
        print("數學的最低分",stu.num,"は", str(stu.M))
    elif course == "H":
        stu = sorted(stulist, key=lambda stu: stu.H)[0]
        print("歷史的最低分",stu.num,"は", str(stu.H))


def CsAve(stulist, course):
    sum = 0
    if course == "J":
        for stu in stulist:
            sum += stu.J
        print("日本語的平均分", str(sum/len(stulist)))
    elif course == "M":
        for stu in stulist:
            sum += stu.M
        print("數學的平均分", str(sum/len(stulist)))
    elif course == "H":
        for stu in stulist:
            sum += stu.H
        print("歷史的平均分", str(sum/len(stulist)))


def CsName():  # 獲取，檢查課程名
    while True:
        name = input("科目名は，J（日本語），M（數學），H（歴史）のいずれか１つで入力")
        if name in ["J", "M", "H"]:
            return name


def Init(stulist):

    with open("results.csv", "r", encoding="utf-8") as fIn:
        for line in fIn:
            line = line.rstrip().split(",")
            student = Student(line[0], line[1], line[2], line[3])
            stulist.append(student)


# 選單
def menu(stulist):
    while True:
        print("********************")
        print("--------選單--------")
        print("添加學生資訊----1")
        print("求科目的最高分----2")
        print("求科目的最低分----3")
        print("求科目的平均分----4")
        print("查詢學生的成績----5")
        print("保存學生的成績----6")
        print("退出程式----------7")
        print("-------------------")
        print("*******************")

        nChoose = input("請輸入你的選擇:")

        if nChoose == "1":
            Addwhile()
        elif nChoose == "2":
            CsMax(stulist, CsName())
        elif nChoose == "3":
            CsMin(stulist, CsName())
        elif nChoose == "4":
            CsAve(stulist, CsName())
        elif nChoose == "5":
            if searchByNum(stulist, input("請輸入學生番號")):
                print("查找成功")
            else:
                print("學生番號不存在")
        elif nChoose == "6":
            Save(stulist)
        elif nChoose == "7":
            return
        else:
            print("輸入有誤，請重新輸入！")


# 測驗函式部分
if __name__ == '__main__':
    # 定義一個串列用來存盤所有學生的資訊
    stulist = []
    # 初始化，從檔案中讀取資訊
    Init(stulist)
    # 選單函式
    menu(stulist)