python+sqlite3学生信息管理系统

此文章非原创，只是自己百度和修改，看别人的都不能运行，需要自己修改，为了像我这样的同学少走一些弯路，给大家一些参考。

 

import sqlite3
cx = sqlite3.connect('D:/student3.db')

cx.execute( '''CREATE TABLE StudentTable(
    ID          INTEGER     PRIMARY KEY     AUTOINCREMENT,
    StuId       INTEGER     NOT NULL,
    NAME        TEXT        NOT NULL,
    CLASS       INT         NOT NULL
);''')

print("Table created successfully!")

cx.execute('''CREATE TABLE CourseTable  (
    CourseId        INT         NOT NULL,
    Name            TEXT        NOT NULL,
    Teacher         TEXT        NOT NULL,
    Classroom       TEXT        NOT NULL,
    StartTime       CHAR(11)    NOT NULL,
    EndTime         CHAR(11)    NOT NULL
);''')

cu = cx.cursor()

CourseTable = [('1', 'Qt', 'ming', 602, 'Monday9:00', 'Monday11:00'),
                   ('2', 'Linux', 'han', 605, 'Friday13:20', 'Friday14:20'),
                   ('3', 'sqlite3', 'hah', 608, 'Thursday15:00', 'Thursday17:00'),
                   ]
cu.executemany("insert into CourseTable values(?, ?, ?, ?, ?, ?)", CourseTable)
cx.commit()

print("Table created successfully!")

cx.execute('''CREATE TABLE XuankeTable(
    ID      INTEGER     PRIMARY KEY     AUTOINCREMENT,
    StuId       INT     NOT NULL,
    CourseId    INT     NOT NULL
);''')

print("Table created successfully")

def insert_stu():#插入学生信息
    cu = cx.cursor()
    stu_id = input("请输入学生学号:")
    cu.execute("select StuId from StudentTable where StuId =%s" %(stu_id))
    row = cu.fetchone()
    if row:
        print("Sorry,该学号已存在，请重新输入")
    else:
        stu_name = input("请输入学生姓名")
        stu_class = input("请输入学生班级")
        sql1 = "insert into StudentTable(StuId, NAME, CLASS)"
        sql1 += " values(%s, '%s', %s) "%(stu_id, stu_name, stu_class)
        cu.execute(sql1)
        cx.commit()
        print("恭喜你，学生录入成功!")
    cu.close()

def xuanke():#学生选课
    cu = cx.cursor()
    stu_id = input("请输入要选课的学生学号:")
    sql2 = "select StuId from StudentTable where StuId =%s"%(stu_id)
    cu.execute(sql2)
    row = cu.fetchone()
    if row:
        sql3 = "select CourseId, Name, Teacher, Classroom, StartTime, EndTime from CourseTable"
        cu.execute(sql3)
        rows = cu.fetchall()
        for row in rows:
            print("CourseId = ", row[0])
            print("Name = ", row[1])
            print("Teacher = ", row[2])
            print("Classroom = ", row[3])
            print("StartTime = ", row[4])
            print("EndTime = ", row[5], "\n")
        cou_id = input("请输入要选的课程号是:")
        sql0 = "select CourseId from CourseTable where CourseId = %s"%(cou_id)
        cu.execute(sql0)
        row = cu.fetchone()
        if row:
            '''sql = "select StuId CourseId from XuankeTable"
            sql += "where CourseId = %s and StuId = %s"%(cou_id,stu_id)
            cu.execute(sql)
            row = cu.fetchone()
            if row:
                print("该课程已选，不能重复选课！")
            else:'''
            sql3 = "insert into XuankeTable (stuId,CourseId) values(%s,%s)"%(stu_id,cou_id)
            cu.execute(sql3)
            cx.commit()
            print("带喜你，选课成功！")
        else:
            print("Sorry，该课程不存在！")
    else:
        print("Sorry,没有该学生号！")
    cu.close()

def stu_id_search():#通过学生Id，查询学生信息
    cu = cx.cursor()
    search_stu_id = input("请输入要查询的学号:")
    sql4 = "select ID,StuId,NAME,CLASS from StudentTable where StuId=%s"%(search_stu_id)
    cu.execute(sql4)
    row = cu.fetchone()
    cx.commit()
    if row:
        sql5 = "select ID,StuId,NAME,CLASS from StudentTable"
        cu.execute(sql5)
        rows = cu.fetchall()
        for row in rows:
            print("---------")
            print("您要查询的学生信息为:")
            print("ID=",row[0])
            print("StuId",row[1])
            print("NAME=",row[2])
            print("CLASS = ",row[3],"\n")
    else:
        print("Sorry, 没有该学生信息！")
    cu.close()

def stu_id_cou():#通过学生Id，查询学生Id的课程信息
    cu = cx.cursor()
    stu_id = input("请输入要查询学生号：")
    sql5 = "select StuId from StudentTable where stuId =%s"%(stu_id)
    cu.execute(sql5)
    row = cu.fetchall()
    if row:
        sql6 = "select * from XuankeTable a left join CourseTable b on a.CourseId=b.CourseId"
        cu.execute(sql6)
        rows = cu.fetchall()
        for row in rows:
            print("该学生所选课程为：")
            print("StuId = ",row[1])
            print("CourseId = ",row[2])
            print("Name = ", row[4])
            print("Teacher = ", row[5])
            print("Classroon =",row[6])
            print("StartTime = ",row[7])
            print("EndTime = ", row[8], "\n")
            print("-----------------")
    else:
        print("sorry,没有该学生选课信息!")
    cu.close()

def cou_id_serach():#通过课程Id，查询课程信息
    cu = cx.cursor()
    cou_id = input("请输入要查询的课程号:")
    sql7 = "select CourseId,Name,Teacher,Classroom,StartTime,EndTime from CourseTable where CourseId =%s"%(cou_id)
    cu.execute(sql7)
    row = cu.fetchone()
    if row:
        print("您要查询的课程信息为:")
        print("CourseId = ", row[0])
        print("Name = ", row[1])
        print("Teacher = ", row[2])
        print("Classroom = ", row[3])
        print("StartTime = ",row[4])
        print("EndTime = ", row[5], "\n")
    else:
        print("Sorry,没有该课程信息！")
    cu.close()

def cou_id_stu():#通过课程号查询所选学生信息
    cu = cx.cursor()
    cou_id = input("请输入课程号:")
    sql8 = "select CourseId from XuankeTable where CourseId =%s"%(cou_id)
    cu.execute(sql8)
    row = cu.fetchone()
    if row:
        sql9 = "select * from XuankeTable a left join StudentTable b on a.StuId=b.StuId"
        cu.execute(sql9)
        rows = cu.fetchall()
        for row in rows:
            print("-----------------------------")
            print("选择该课程的学生为：")
            print("StuId = ", row[1])
            print("NAME = ", row[5])
            print("CLASS = ", row[6], "\n")
        else:
            print("Sorry，没有该课程信息！")
        cu.close()

def menu():
    print("1.进入学生信息系统（学生信息录入）")
    print("2.进入学生选课系统（学生选课操作）")
    print("3.进入学生选课信息系统（学生信息查询和选课情况查询）")
    print("4.退出程序")

def student():
    print("1.录入学生信息")
    print("2.返回主菜单")

def Course():
    print("1.开始选课")
    print("2.返回主菜单")

def information():
    print("1.按学号查询学生信息")
    print("2.按学号查看学生选课课程列表")
    print("3.按课程号查看课程信息")
    print("4.按课程号查看选课学生列表")
    print("5.返回主菜单")

while True:
    menu()
    print("---------------------")
    x = input("请输入您的选择菜单号:")
    if x == '1':
        student()
        stu = input("您已进入学生录入系统，请再次输入选择菜单:")
        print("---------------------")
        if stu == '1':
            insert_stu()
            continue
        if stu == '2':
            continue
        else:
            print("输入的选项不存在，请重新输入！")
            continue

    if x == '2':
        #进入造课信息系统
        Course()
        cou = input("您已进入学生选课系统，请再次输入选择菜单：")
        print("------------------")
        if cou == '1':
            xuanke()
            continue
        if cou == '2':
            continue
        else:
            print("输入的选项不存在，请重新输入！")
            continue

    if x == '3':
        #进入学生选课信息表
        information()
        inf = input("您已进入学生选课信息系统，请再次输入选择菜单：")
        print("------------------")
        if inf == '1':
            stu_id_search()
            continue
        if inf == '2':
            stu_id_cou()
            continue
        if inf == '3':
            cou_id_serach()
            continue
        if inf == '4':
            cou_id_stu()
        else:
            print("输入的选项不存在，请重新输入！")
            continue

    if x == '4':
        print("谢谢使用")
        exit()
    else:
        print("输入的选项不存在，请重新输入！")
        continue