python学生管理系统

1.添加学生信息
2.修改学生信息
3.删除学生
4.添加学生的成绩
5.修改学生成绩
6.按姓名或者学号查找学生，显示学生信息及三门课的成绩，以及排名
7.学生成绩统计（每门课的平均分、最高分、最低分）

#coding = utf-8
students=[]
def showInfo():
        print(" 学生管理系统")
        print(" 1.添加学生的信息")
        print(" 2.修改学生的信息")
        print(" 3.删除学生的信息")
        print(" 4.添加学生的成绩")
        print(" 5.修改学生成绩")
        print(" 6.查找学生信息")
        print(" 7.学生成绩统计")
        print(" 8.退出")

def add_student():
    print("请添加学生姓名学号")
    name = input("请输入学生姓名")
    stuId = input("请输入学生学号(学号不可重复)")
    age = input("请输入学生年龄")
    ##验证学号是否唯一
    leap = 0
    for temp in students:
        if temp['id'] == stuId:
            leap = 1
            break
    if leap == 1:
        print("输入学生学号重复，添加失败！")
        return 0

    else:
        # 定义一个字典，存放单个学生信息
        stuInfo = {}
        stuInfo['name'] = name
        stuInfo['id'] = stuId
        stuInfo['age'] = age
        stuInfo['Machine_learning'] = 0
        stuInfo['Python_score'] = 0
        stuInfo['English_score'] = 0
        # 单个学生信息放入列表
        students.append(stuInfo)
        print("添加成功！")

def revise_student():
    alterId = input("请输入你要修改学生的学号:")
    # 检测是否有此学号，然后进行修改信息
    i = 0
    leap = 0
    for temp in students:
        if temp['id'] == alterId:
            leap = 1
            break
        else:
            i = i + 1
    if leap == 1:
        while True:
            alterNum = int(input(" 1.修改学号\n 2.修改姓名 \n 3.修改年龄 \n 4.退出修改\n"))
            if alterNum == 1:
                newId = input("输入更改后的学号:")
                # 修改后的学号要验证是否唯一
                i = 0
                leap1 = 0
                for temp1 in students:
                    if temp1['id'] == newId:
                        leap1 = 1
                        break
                    else:
                        i = i + 1
                if leap1 == 1:
                    print("输入学号不可重复，修改失败！")
                else:
                    temp['id'] = newId
                    print("学号修改成功")
            elif alterNum == 2:
                newName = input("输入更改后的姓名:")
                temp['name'] = newName
                print("姓名修改成功")
            elif alterNum == 3:
                newAge = input("输入更改后的年龄:")
                temp['age'] = newAge
                print("年龄修改成功")
            elif alterNum == 4:
                break
            else:
                print("输入错误请重新输入")
    else:
        print("没有此学号，修改失败！")

def delete_student():

    delId = input("请输入要删除的学生学号:")
    # i记录要删除的下标，leap为标志位，如果找到leap=1，否则为0
    i = 0
    leap = 0
    for temp in students:
        if temp['id'] == delId:
            leap = 1
            break
        else:
            i = i + 1
    if leap == 0:
        print("没有此学生学号，删除失败！")
    else:
        del students[i]
        print("删除成功！")

def add_student_score():
    print("添加学生成绩")
    stuId = input("请选择学生学号")
    i = 0
    leap =  0
    for temp in students:
        if temp['id'] == stuId:
            leap = 1
            break
        else:
            i = i+1
    if leap == 1:
        while True:
            num = int(input(" 1.机器学习成绩\n 2.Python程序设计 \n 3.研究生英语 \n 4.退出修改\n"))
            if num == 1:
                Machine_learning = input("机器学习的成绩")
                temp['Machine_learning'] = Machine_learning
            elif num == 2:
                Python_score = input("Python程序设计成绩")
                temp['Python_score'] = Python_score

            elif num == 3:
                English_score = input("研究生英语成绩")
                temp['English_score'] = English_score
            elif num == 4:
                break

def search_student():
    SearchStuId = input("请输入查找的学号")
    leap = 0
    for temp in students:
        if temp['id'] == SearchStuId:
            leap = 1
            break
    if leap == 0:
        print("没有此学生学号，查询失败！")
    else:
        print("找到此学生，信息如下：")
        print("学号：%s\n姓名：%s\n年龄：%s\n" % (temp['id'], temp['name'], temp['age']))
        print("各科成绩：\n 机器学习:%s\nPython程序设计:%s\n研究生英语:%s" %(temp['Machine_learning'],temp['Python_score'],temp['English_score']))

def revise_student_score():
    alterId = input("请输入你要修改学生的学号:")
    # 检测是否有此学号，然后进行修改信息
    i = 0
    leap = 0
    for temp in students:
        if temp['id'] == alterId:
            leap = 1
            break
        else:
            i = i + 1
    if leap == 1:
        while True:
            alterNum = int(input(" 1.修改机器学习成绩\n 2.修改Python成绩 \n 3.修改英语成绩 \n 4.退出修改\n"))
            if alterNum == 1:
                NewMachine_learning = input("机器学习成绩")
                temp['Machine_learning'] = NewMachine_learning
            elif alterNum == 2:
                NewPython_score = input("Python成绩")
                temp['Python_score'] = NewPython_score
            elif alterNum == 3:
                NewEnglish_score = input("英语成绩")
                temp['English_score'] = NewEnglish_score
            elif alterNum == 4:
                break

def student_score_count():
    Machine_learning_score = 0
    Python_score = 0
    English_score = 0
    a=0
    for temp in students:
        Machine_learning_score += int(temp['Machine_learning'])
        Python_score += int(temp['Python_score'])
        English_score += int(temp['English_score'])

        a+=1
    Machine_learning_score_age = Machine_learning_score/a
    Python_score_age = Python_score/a
    English_score_age = English_score/a
    print("机器学习平均成绩", Machine_learning_score_age)
    print("Pythong平均成绩", Python_score_age)
    print("英语平均成绩", English_score_age)

    high_machine_learning = 0
    for temp in students:
        machine_learning = int(temp['Machine_learning'])
        if machine_learning>high_machine_learning:
            high_machine_learning = machine_learning
    print("机器学习的最高分",high_machine_learning)

    high_python = 0
    for temp in students:
        python = int(temp['Python_score'])
        if python>high_python:
            high_python = python
    print("Python的最高分",high_python)

    high_english = 0
    for temp in students:
        english = int(temp['English_score'])
        if english > high_english:
            high_english = english
    print("英语的最高分", high_english)

    low_machine_learning = 1000000
    for temp in students:
        machine_learning = int(temp['Machine_learning'])
        if machine_learning < low_machine_learning:
            low_machine_learning = machine_learning
    print("机器学习的最低分", low_machine_learning)

    low_python = 1000000
    for temp in students:
        python = int(temp['Python_score'])
        if python < low_python:
            low_python = python
    print("Python的最低分", low_python)

    low_english = 1000000
    for temp in students:
        english = int(temp['English_score'])
        if english < low_english:
            low_english = english
    print("英语的最低分", low_english)

while True :
    showInfo()
    num = int(input("请选择功能"))

    if num==1:
#        添加学生的信息
        add_student()

    elif num==2:
#        修改学生的信息
        revise_student()

    elif num==3:
#         删除学生的信息
        delete_student()

    elif num==4:
#         添加学生的成绩
        add_student_score()

    elif num==5:
#         修改学生成绩
        revise_student_score()

    elif num==6:
#         查找学生信息
        search_student()

    elif num==7:
#         学生成绩统计
        student_score_count()

    elif num==8:
        break

标签：temp,管理系统,python,学生,leap,score,learning,print,input
来源： https://www.cnblogs.com/tongyixuan/p/10539117.html