2018-10-09 Python学生管理系统简易版

(学生管理系统简易版)
用一个变量来保存一个班级的学生信息，学生信息包括:姓名、学号、成绩(英语、体育、美术、数学)、年龄
b.给这个班级添加学生
c.根据姓名查看班级里的某个学生的信息
d.根据姓名删除一个指定的学生信息
e.查看班级的所有的学生信息
f.求指定的学生平均成绩

students = [{'name': '小明', 'stu_id': 5120152566, 'age': 18, 'scores': {'英语': 96, '体育': 86, '美术': 84, '数学': 98}}]
while True:

    print('****************************欢迎来到千锋学生管理系统*************************')
    print('1 添加学生\n')
    print('2 查询学生\n')
    print('3 删除学生\n')
    print('4 查看班级所有学生\n')
    print('5 查询学生平均成绩\n')
    print('0 退出系统\n')
    print('*****************************************************************************')

    num = int(input('请选择你的操作：'))

    def tishi():
        print('*********1.返回主页面**********')
        print('*********0.退出系统************')
        while True:
            num2 = int(input("请选择操作："))
            if num2 == 1:
    #            import os
    #            os.system('clear')
                return
            if num2 == 0:
                exit()
            else:
                print('********请正确操作！********')

    def add_stu():
        addname = input("请输入添加的学生姓名：")
        addstu_id = input("请输入添加学生的学号：")
        addage = input('请输入添加的学生年龄：')

        addscore1 = int(input('请输入添加的学生英语成绩：'))
        addscore2 = int(input('请输入添加的学生体育成绩：'))
        addscore3 = int(input('请输入添加的学生美术成绩：'))
        addscore4 = int(input('请输入添加的学生数学成绩：'))

        students.append({'name': addname, 'stu_id': addstu_id, 'age': addage, 'scores': {'英语': addscore1, '体育': addscore2, '美术': addscore3, '数学': addscore4}})
        print("添加成功！")
        tishi()

    def find_stu():
        findname = str(input("请输入要查询的学生姓名："))
        for student in students:
            if student['name'] == findname:
                print("姓名：", student['name'])
                print("学号：", student['stu_id'])
                print("年龄：", student['age'])
                print("英语成绩：", student['scores']['英语'])
                print("体育成绩：", student['scores']['体育'])
                print("美术成绩：", student['scores']['美术'])
                print("数学成绩：", student['scores']['数学'])
                break
        tishi()

    def del_stu():
        delname = str(input("请输入要删除的学生姓名："))
        for student in students:
            if student['name'] == delname:
                students.remove(student)
                print('删除成功！')
                break
        tishi()

    def show_stu():
        print("*姓名****学号****年龄***英语***体育***美术***数学*")
        for student in students:
            print(student['name'], '', student['stu_id'], '', student['age'], '   ', student['scores']['英语'], '   ', student['scores']['体育'], '   ', student['scores']['美术'], '   ', student['scores']['数学'])
        tishi()

    def score_stu():
        stu_name = str(input("请输入要查询分数的学生姓名："))
        for student in students:
            if student['name'] == stu_name:
                averge_score = float((student['scores']['英语'] + student['scores']['体育'] + student['scores']['美术'] + student['scores']['数学']))/4
                break
        print('他的平均分为：',averge_score)
        tishi()

    if num == 0:
        exit()

    if num == 1:
        add_stu()
     #   print(students)

    if num == 2:
        find_stu()

    if num == 3:
        del_stu()
    #    print(students)

    if num == 4:
        show_stu()

    if num == 5:
        score_stu()