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  • ORM学员管理系统

     

    一、作业需求:

    用户角色,讲师\学员, 用户登陆后根据角色不同,能做的事情不同,分别如下

    讲师视图:

          管理班级,可创建班级,根据学员qq号把学员加入班级
          可创建指定班级的上课纪录,注意一节上课纪录对应多条学员的上课纪录, 即每节课都有整班学员上, 为了纪录每位学员的学习成绩,需在创建每节上课纪录是,同时为这个班的每位学员创建一条上课纪录
          为学员批改成绩, 一条一条的手动修改成绩

    学员视图:

        提交作业
        查看作业成绩
        一个学员可以同时属于多个班级,就像报了Linux的同时也可以报名Python一样, 所以提交作业时需先选择班级,再选择具体上课的节数
        附加:学员可以查看自己的班级成绩排名

    二、

    一、作业需求:
    用户角色,讲师\学员, 用户登陆后根据角色不同,能做的事情不同,分别如下
    讲师视图:
    管理班级,可创建班级,根据学员qq号把学员加入班级
    可创建指定班级的上课纪录,注意一节上课纪录对应多条学员的上课纪录, 即每节课都有整班学员上, 为了纪录每位学员的学习成绩,需在创建每节上课纪录是,同时为这个班的每位学员创建一条上课纪录
    为学员批改成绩, 一条一条的手动修改成绩
    学员视图:
    提交作业
    查看作业成绩
    一个学员可以同时属于多个班级,就像报了Linux的同时也可以报名Python一样, 所以提交作业时需先选择班级,再选择具体上课的节数
    附加:学员可以查看自己的班级成绩排名
    二、博客地址:https://www.cnblogs.com/catepython/p/9105669.html
    三、运行环境
    操作系统:Win10
    Python:3.6.4rcl
    Pycharm:2017.3.4
    四 、具体实现
    1、借鉴了大神们的表设计结构(本人借鉴的是Assassinの 博客地址是:https://www.cnblogs.com/lianzhilei/archive/2016/10/30/6013847.html)
    2、根据表结构设计在create_table.py中创建相应的表
    3、根据需求搭好界面性的程序框架
    4、根据程序流程图和表结构逐步完成各模块函数
    5、边写函数发放边调试、测试等
    五、测试流程
    1、在测试调试过程中也发现了一些bug
    例如:
    学生QQ是唯一,但先输入用户名在输入已存在的QQ号这时程序报了错(现已修复)
    2、也经常发现了跨表数据的现象
    例如:
    查询学员成绩排名是把不在同一个班级或课节的学员也查出来(多做了一些判断已修复类似现象)
    3、对程序中也完善了一些唯一、不能为空、成绩必须是整数0-100范围判断...
    六、备注
    1、Assassinの的表设计很完美,几乎没有冗余数据,但查询关联起来对于我等菜鸟还真是有点伤脑。
    readme

    三、程序流程图

    四、数据结构图

     五、程序架构图

    六、核心代码

    bin目录

    #-*-coding:utf-8 -*-
    # Author: D.Gray
    from core import main
    if __name__ == '__main__':
    start = main.Action()
    start.func()
    start

    conf目录 配置文件

    #-*-coding:utf-8 -*-
    # Author: D.Gray
    import sqlalchemy
    from sqlalchemy import create_engine
    engine = create_engine('mysql+pymysql://root:admin1988@localhost/Manager?charset=utf8')
    setting

    core目录 主程序文件

    #-*-coding:utf-8 -*-
    # Author: D.Gray
    import sqlalchemy
    from conf.setting import engine
    from sqlalchemy.orm import sessionmaker
    from database.create_table import Teacher,Class
    from src.Student_view import Student_manager
    from src.Teacher_view import Teacher_manager
    class Action(object):
    def __init__(self):
    Session_class = sessionmaker(bind=engine)
    self.session = Session_class()
    self.initialize_database()
    def func(self):
    while True:
    mesg = '''33[35;1m 欢迎进入CLASS_SYSTEM系统
    1 讲师视图
    2 学生视图
    q 退出管理系统33[0m
    '''
    print(mesg)
    use_choice = input("33[34;0m请输入你进入的视图:33[0m")
    if use_choice == '1':
    Teacher_manager(self.session)
    elif use_choice == '2':
    Student_manager(self.session)
    elif use_choice == 'q':
    exit("33[31;0m感谢使用管理系统,33[0m")
    break
    else:
    print("33[31;1m请输入正确的选项33[0m")
    def initialize_database(self):
    rest = self.session.query(Teacher).filter(Teacher.teacher_id>0).all()
    if not rest:
    c1 = Class(class_name = 'S14',course = 'Python')
    t1 = Teacher(teacher_name = 'Alex')
    t1.teacher_class = [c1]
    self.session.add_all([c1,t1])
    self.session.commit()
    print('数据添加成')
    main

    database目录  数据文件

    #-*-coding:utf-8 -*-
    # Author: D.Gray
    import sqlalchemy
    from sqlalchemy import create_engine
    from sqlalchemy.ext.declarative import declarative_base
    from sqlalchemy.orm import sessionmaker,relationship
    from sqlalchemy import Column,String,Integer,Table,ForeignKey
    from conf.setting import engine
    Base = declarative_base()
    teacher_m2m_class = Table(
    'teacher_m2m_class',Base.metadata,
    Column('teacher_id',Integer,ForeignKey('teacher.teacher_id'),nullable=False),
    Column('class_id',Integer,ForeignKey('class.class_id'),nullable=False)
    )
    class_m2m_student = Table(
    'class_m2m_student',Base.metadata,
    Column('class_id',Integer,ForeignKey('class.class_id'),nullable=False),
    Column('stu_id',Integer,ForeignKey('student.stu_id'),nullable=False)
    )
    class Teacher(Base):
    __tablename__ = 'teacher'
    teacher_id = Column(Integer,primary_key=True)
    teacher_name = Column(String(64),nullable=False)
    teacher_class = relationship('Class',secondary = teacher_m2m_class,backref = 'teacher_keys')
    def __repr__(self):
    return '讲师:【%s】'%(self.teacher_name)
    class Class(Base):
    __tablename__ = 'class'
    class_id = Column(Integer,primary_key=True)
    class_name = Column(String(64),nullable=False)
    course = Column(String(64),nullable=False)
    class_student = relationship('Student',secondary = class_m2m_student,backref = 'class_keys')
    def __repr__(self):
    return '班级:【%s】'%(self.class_name)
    class Student(Base):
    __tablename__ = 'student'
    stu_id = Column(Integer,primary_key=True)
    stu_name = Column(String(64),nullable=False)
    QQ = Column(String(64),nullable=False,unique=True)
    def __repr__(self):
    return '学生名:【%s】'%(self.stu_name)
    class Lesson(Base):
    __tablename__ = 'lesson'
    lesson_id = Column(Integer,primary_key=True)
    lesson_name = Column(String(64),nullable=False)
    def __repr__(self):
    return '课节名:【%s】'%(self.lesson_name)
    class Study_record(Base):
    __tablename__ = 'study_record'
    id = Column(Integer,primary_key=True)
    class_m2m_lesson_id = Column(Integer,ForeignKey('class_m2m_lesson.id'),nullable=False)
    stu_id = Column(Integer,ForeignKey('student.stu_id'),nullable=False)
    status = Column(String(64),nullable=False,default='Y')
    score = Column(Integer,nullable=False,default=0)
    class_m2m_lessons = relationship('class_m2m_lesson',backref = 'study_keys')
    study_students = relationship('Student',backref = 'study_student_keys')
    def __repr__(self):
    return "33[32;0m%s,%s,状态:【%s】,成绩:【%s】33[0m"
    %(self.class_m2m_lessons,self.study_students,self.status,self.score)
    class class_m2m_lesson(Base):
    __tablename__ = 'class_m2m_lesson'
    id = Column(Integer,primary_key=True)
    class_id = Column(Integer,ForeignKey('class.class_id'),nullable=False)
    lesson_id = Column(Integer,ForeignKey('lesson.lesson_id'),nullable=False)
    classes = relationship('Class',backref = 'class_lesson_keys')
    lessons = relationship('Lesson',backref = 'lesson_class_keys')
    def __repr__(self):
    return '<%s %s>'%(self.class_id,self.lesson_id)
    Base.metadata.create_all(engine)
    print('创建表成功')
    create_table

    src目录 主要类文件

    # -*- coding:utf-8 -*-
    # Author:D.Gray
    from database.create_table import Class,Teacher,Student,class_m2m_lesson,class_m2m_student,Lesson,Study_record
    class Teacher_manager(object):
    def __init__(self,session):
    self.session = session
    self.authentication()
    self.handle()
    def authentication(self):
    '''
    教师认证函数
    :return:
    '''
    while True:
    teacher_input = input("33[33;0m请输入讲师名:33[0m").strip()
    self.teacher_obj = self.session.query(Teacher).filter(Teacher.teacher_name == teacher_input).first()
    #print(teacher_obj)
    if self.teacher_obj is None:
    print("33[31;1m输入错误:请输入有效的讲师名33[0m")
    continue
    else:
    break
    def handle(self):
    '''
    教师操作视图
    :return:
    '''
    while True:
    print("33[35;1m欢迎【%s】进入讲师管理系统
    "
    "1、显示可管理的班级
    "
    "2、创建班级
    "
    "3、添加学员
    "
    "4、添加课程节次
    "
    "5、创建上课记录
    "
    "6、修改学员成绩
    "
    "exit 退出管理系统
    33[0m"%self.teacher_obj.teacher_name)
    self.dic = {
    '1':self.show_classes,
    '2':self.add_class,
    '3':self.add_student,
    '4':self.add_lesson,
    '5':self.add_study_record,
    '6':self.modify_scores,
    'exit':self.exit
    }
    action_input = input("33[34;0m请输入进行操作的命令:33[0m")
    if action_input in self.dic.keys():
    self.dic[action_input]()
    else:
    print("33[31;0m请输入有效操作的命令33[0m")
    def show_classes(self):
    '''
    查看所有管理的班级
    :return:
    '''
    for class_obj in self.teacher_obj.teacher_class:
    print('33[32;1m%s 班级名:%s 课程:%s33[0m'
    % (self.teacher_obj.teacher_name, class_obj.class_name, class_obj.course))
    def add_class(self):
    '''
    添加教室
    :return:
    '''
    class_input = input("33[33;0m请输入创建班级的名称:33[0m").capitalize()
    class_obj = self.session.query(Class).filter(Class.class_name==class_input).first()
    if class_obj is None:
    course_input = input("33[33;0m请输入创建班级的课程:33[0m").capitalize()
    class_obj = Class(class_name = class_input,course = course_input)
    self.teacher_obj.teacher_class.append(class_obj)
    self.session.commit()
    print("33[32;1m班级创建成功33[0m")
    else:
    print("33[31;1m系统错误:班级已经存在33[0m")
    def add_student(self):
    '''
    添加学生
    :return:
    '''
    class_input = input("33[33;0m请输入要添加学员的班级名:33[0m").capitalize()
    class_obj = self.session.query(Class).filter(Class.class_name == class_input).first()
    if class_obj and class_obj.teacher_keys[0] == self.teacher_obj:
    stu_input = input("33[33;0m请输入要添加的学员名:33[0m").capitalize()
    stu_obj = self.session.query(Student).filter(Student.stu_name == stu_input).first()
    if stu_obj is None:
    QQ_input = input("33[33;0m请输入要添加的学员QQ:33[0m").capitalize()
    if QQ_input.isdigit():
    QQ_input = int(QQ_input)
    stu_qq_obj = self.session.query(Student).filter(Student.QQ == QQ_input).first()
    if stu_qq_obj is None:
    stu_obj = Student(stu_name = stu_input,QQ = QQ_input)
    class_obj.class_student.append(stu_obj)
    self.session.add(stu_obj)
    self.session.commit()
    print('33[32;1m学员添加成功33[0m')
    else:
    print('33[31;1mQQ号已存在33[0m')
    else:
    print('33[31;1mQQ号必须是数子33[0m')
    else:
    print("33[31;1m系统错误:学员已经存在33[0m")
    else:
    print("33[31;1m输入错误:班级不存在或没有权限管理此班级33[0m")
    def add_lesson(self):
    '''
    添加课程节次
    :return:
    '''
    class_input = input("33[33;0m请输入要添加节次的班级名:33[0m").capitalize()
    class_obj = self.session.query(Class).filter(Class.class_name == class_input).first()
    if class_obj and class_obj.teacher_keys[0] == self.teacher_obj:
    lesson_input = input("33[33;0m请输入添加的lesson名(类day1):33[0m")
    lesson_obj = self.session.query(Lesson).filter(Lesson.lesson_name == lesson_input).first()
    if lesson_obj is None: #所需添加的lesson名不存在可创建
    lesson_obj = Lesson(lesson_name = lesson_input)
    self.session.add(lesson_obj)
    self.session.commit()
    print('33[32;1mlesson表数据创建成功33[0m')
    #在class_m2m_lesson创建一条关联数据
    rest = (self.session.query(class_m2m_lesson).filter(class_m2m_lesson.class_id == class_obj.class_id).
    filter(class_m2m_lesson.lesson_id == lesson_obj.lesson_id)).first()
    if rest is None:
    rest = class_m2m_lesson(class_id = class_obj.class_id,lesson_id = lesson_obj.lesson_id)
    self.session.add(rest)
    self.session.commit()
    print('33[32;1m class_m2m_lesson表数据创建成功33[0m')
    else:
    print("33[31;1m系统错误:课节已经存在33[0m")
    else:
    print("33[31;1m输入错误:班级不存在或没有权限管理此班级33[0m")
    def add_study_record(self):
    '''
    添加上课记录数据
    :return:
    '''
    class_input = input("33[33;0m请输入要添加记录的班级名:33[0m").capitalize()
    class_obj = self.session.query(Class).filter(Class.class_name == class_input).first()
    if class_obj and class_obj.teacher_keys[0] == self.teacher_obj:
    lesson_input = input("33[33;0m请输入添加记录的lesson名(类day1):33[0m")
    lesson_obj = self.session.query(Lesson).filter(Lesson.lesson_name == lesson_input).first()
    if lesson_obj is not None: #课节已存在
    class_lesson_obj = self.session.query(class_m2m_lesson).
    filter(class_m2m_lesson.class_id == class_obj.class_id).
    filter(class_m2m_lesson.lesson_id == lesson_obj.lesson_id).first()
    if class_lesson_obj is not None:
    study_record_obj = self.session.query(Study_record).
    filter(Study_record.class_m2m_lesson_id == class_lesson_obj.id).first()
    if study_record_obj is not None:
    while True:
    print('33[32;1m已有上课记录的学生信息33[0m')
    for student in class_obj.class_student: # 循环遍历学生是否已在上课记录表中已记录
    stu_id_obj = self.session.query(Study_record). 
    filter(Study_record.stu_id == student.stu_id).
    filter(Study_record.class_m2m_lesson_id == class_lesson_obj.id).first()
    if stu_id_obj is not None: # 打印有上课记录的学生信息
    print('33[32;1m学生名:【%s】 Status:【%s】 '
    '成绩:【%s】33[0m'
    %(student.stu_name,stu_id_obj.status,stu_id_obj.score))
    stu_input = input("33[33;0m请输入要添加记录的学生名[Q 退出]:33[0m").capitalize()
    if stu_input == 'Q':break
    stu_obj = self.session.query(Student).filter(Student.stu_name == stu_input).first()
    if stu_obj is not None: # 判断输入的学生名是否存在
    study_stu_obj = self.session.query(Study_record).
    filter(Study_record.stu_id == stu_obj.stu_id).
    filter(Study_record.class_m2m_lesson_id == class_lesson_obj.id).first()
    if study_stu_obj is None: #判断该学生在Study_record表中有记录
    status_input = input("添加%s 的上课状态(Y/N):" % stu_obj.stu_name).capitalize()
    if status_input != 'N': status_input = 'Y'
    while True:
    score_input = input("添加 %s 的成绩:"
    % stu_obj.stu_name).capitalize()
    if score_input.isdigit():
    score_input = int(score_input)
    if score_input >= 0 and score_input <= 100:
    study_record_obj_new = Study_record(
    class_m2m_lesson_id = class_lesson_obj.id,
    stu_id = stu_obj.stu_id,
    status = status_input,
    score = score_input
    )
    self.session.add(study_record_obj_new)
    self.session.commit()
    print('33[32;1m记录添加完成33[0m')
    break
    else:
    print('33[31;1m请输入成绩超出有效范围33[0m')
    else:
    print('33[31;1m请输入有效成绩33[0m')
    else:
    print("33[31;1m系统错误:该学生上课记录已存在33[0m")
    else:
    print("33[31;1m系统错误:该学生未存在33[0m")
    else:
    print("33[31;1m系统错误:class_m2m_lesson表中无记录33[0m")
    else:
    print("33[31;1m系统错误:课节不存在33[0m")
    else:
    print("33[31;1m输入错误:班级不存在或没有权限管理此班级33[0m")
    def modify_scores(self):
    '''
    修改学生成绩函数
    :return:
    '''
    class_input = input("33[33;0m请输入要添加记录的班级名:33[0m").capitalize()
    class_obj = self.session.query(Class).filter(Class.class_name == class_input).first()
    if class_obj and class_obj.teacher_keys[0] == self.teacher_obj:
    lesson_input = input("33[33;0m请输入添加记录的lesson名(类day1):33[0m")
    lesson_obj = self.session.query(Lesson).filter(Lesson.lesson_name == lesson_input).first()
    if lesson_obj is not None: # 课节已存在
    class_lesson_obj = self.session.query(class_m2m_lesson). 
    filter(class_m2m_lesson.class_id == class_obj.class_id). 
    filter(class_m2m_lesson.lesson_id == lesson_obj.lesson_id).first()
    if class_lesson_obj is not None: #判断该课节在class_m2m_lesson表是否存在
    study_record_obj = self.session.query(Study_record). 
    filter(Study_record.class_m2m_lesson_id == class_lesson_obj.id).first()
    if study_record_obj is not None:
    while True:
    print('33[32;1m已有上课记录的学生信息33[0m')
    for student in class_obj.class_student: # 循环遍历学生是否已在上课记录表中已记录
    stu_id_obj = self.session.query(Study_record). 
    filter(Study_record.stu_id == student.stu_id).
    filter(Study_record.class_m2m_lesson_id == class_lesson_obj.id).first()
    if stu_id_obj is not None: # 打印未在有上课记录的学生信息
    print('33[32;1m学生名:【%s】 Status:【%s】 '
    '成绩:【%s】33[0m'
    %(student.stu_name,stu_id_obj.status,stu_id_obj.score))
    stu_input = input("33[33;0m请输入要修改记录的学生名[Q 退出]:33[0m").capitalize()
    if stu_input == 'Q':break
    # 判断输入的学生名是否存在
    stu_obj = self.session.query(Student).filter(Student.stu_name == stu_input).first()
    if stu_obj is not None:
    #判断该学生在Study_record表中有记录
    study_stu_obj = self.session.query(Study_record).
    filter(Study_record.stu_id == stu_obj.stu_id).
    filter(Study_record.class_m2m_lesson_id == class_lesson_obj.id).first()
    if study_stu_obj is not None: #该学生已有上课记录
    status_input = input("修改%s 的上课状态(Y/N):" % stu_obj.stu_name).capitalize()
    if status_input != 'N': status_input = 'Y'
    while True:
    score_input = input("修改 %s 的成绩:"
    % stu_obj.stu_name).capitalize()
    if score_input.isdigit():
    score_input = int(score_input)
    if score_input >= 0 and score_input <= 100:
    study_stu_obj.status = status_input
    study_stu_obj.score = score_input
    self.session.commit()
    print('33[32;1m记录修改完成33[0m')
    break
    else:
    print('33[31;1m请输入成绩超出有效范围33[0m')
    else:
    print('33[31;1m请输入有效成绩33[0m')
    else:
    print("33[31;1m系统错误:该学生上课记录未存在33[0m")
    else:
    print("33[31;1m系统错误:该学生未存在33[0m")
    else:
    print("33[31;1m系统错误:上课记录未存在33[0m")
    else:
    print("33[31;1m系统错误:class_m2m_lesson表中无记录33[0m")
    else:
    print("33[31;1m系统错误:课节不存在33[0m")
    else:
    print("33[31;1m输入错误:班级不存在或没有权限管理此班级33[0m")
    def exit(self):
    exit('33[31;0m感谢使用管理系统,33[0m')
    teacher_view
    # -*- coding:utf-8 -*-
    # Author:D.Gray
    from database.create_table import Class,Teacher,Student,class_m2m_lesson,class_m2m_student,Lesson,Study_record
    import sqlalchemy
    from sqlalchemy import func
    class Student_manager(object):
    def __init__(self,session):
    self.session = session
    self.authentication()
    self.handle()
    def authentication(self):
    '''
    学生认证函数
    :return:
    '''
    while True:
    student_input = input("33[33;0m请输入学生名:33[0m").strip().capitalize()
    self.student_obj = self.session.query(Student).filter(Student.stu_name == student_input).first()
    if self.student_obj:
    print('33[32;0m学生ID:%s
    所属班级:%s33[0m'%(self.student_obj.stu_id,self.student_obj.class_keys))
    break
    else:
    print("33[31;1m输入错误:请输入有效的学生名33[0m")
    continue
    def handle(self):
    '''
    学生视图执行函数
    :return:
    '''
    while True:
    print("33[35;1m欢迎【%s】进入学员管理系统
    "
    "1、上传作业
    "
    "2、查看作业成绩
    "
    "3、查看班级排名
    "
    "exit 退出管理系统
    33[0m" % self.student_obj.stu_name)
    user_func = input("33[34;0m请输入进行操作的命令:33[0m")
    self.dic = {
    '1':self.up_homework,
    '2':self.show_homework,
    '3':self.show_rank,
    'exit':self.exit
    }
    if user_func in self.dic.keys():
    self.dic[user_func]()
    else:
    print("33[31;0m请输入有效操作的命令33[0m")
    def up_homework(self):
    '''
    上传作业函数
    :return:
    '''
    #print('in the up_homework')
    class_name = input("33[33;0m请输入班级名:33[0m").capitalize().strip()
    class_obj = self.student_obj.class_keys
    for classes in class_obj:
    if classes.class_name == class_name:
    if class_name: #判断学生是否存在所输入班级中
    lesson_name = input("33[33;0m请输入课节名:33[0m").capitalize().strip()
    lesson_obj = self.session.query(Lesson).filter(Lesson.lesson_name == lesson_name).first()
    if lesson_obj: #判断课节是否存在
    class_m2m_lesson_obj = self.session.query(class_m2m_lesson).filter(
    class_m2m_lesson.class_id == classes.class_id
    ).filter(class_m2m_lesson.lesson_id == lesson_obj.lesson_id).first()
    if class_m2m_lesson_obj: #判断班级和课节是否在class_m2m_lesson表中
    study_record_obj = self.session.query(Study_record).filter(
    Study_record.class_m2m_lesson_id==class_m2m_lesson_obj.id
    ).filter(Study_record.stu_id==self.student_obj.stu_id).first()
    if study_record_obj: #判断测试学生在study_record表是否有记录
    if study_record_obj.status == 'N': #判断用户作业是否已提交
    print('33[32;0m作业提交情况:未提交33[0m' )
    up_input = input('33[33;0m您本次课节作业是否选择提交(Y/N)>>>:33[0m')
    .strip().capitalize()
    if up_input == 'Y':
    study_record_obj.status = up_input
    self.session.commit()
    print('33[32;0m本次课节作业提交完成33[0m')
    else:
    print('33[31;0m请按时提交本次课节作业33[0m')
    break
    else:
    print('33[32;0m您本次课节作业情况:已提交33[0m')
    else:
    print("33[31;1m系统错误:未有该上课记录33[0m")
    else:
    print("33[31;1m系统错误:class_m2m_lesson表未创建33[0m")
    else:
    print("33[31;1m系统错误:课节未创建33[0m")
    else:
    print("33[31;1m输入错误:班级不存在或学生不在此班级33[0m")
    def show_homework(self):
    '''
    查看成绩函数
    :return:
    '''
    class_name = input("33[33;0m请输入班级名:33[0m").capitalize().strip()
    class_obj = self.student_obj.class_keys
    for classes in class_obj:
    if classes.class_name == class_name:
    if class_name: # 判断学生是否存在所输入班级中
    lesson_name = input("33[33;0m请输入课节名:33[0m").capitalize().strip()
    lesson_obj = self.session.query(Lesson).filter(Lesson.lesson_name == lesson_name).first()
    if lesson_obj:
    class_m2m_lesson_obj = self.session.query(class_m2m_lesson).filter(
    class_m2m_lesson.class_id == classes.class_id
    ).filter(class_m2m_lesson.lesson_id == lesson_obj.lesson_id).first()
    if class_m2m_lesson_obj:
    study_record_obj = self.session.query(Study_record).filter(
    Study_record.class_m2m_lesson_id == class_m2m_lesson_obj.id
    ).filter(Study_record.stu_id == self.student_obj.stu_id).first()
    if study_record_obj:
    if study_record_obj.status == 'N':
    print('33[32;0m作业提交情况:未提交33[0m')
    print('33[31;0m请按时提交本次课节作业33[0m')
    else:
    print('33[32;0m本次课节作业成绩:【%s】分33[0m'%study_record_obj.score)
    break
    else:
    print("33[31;1m系统错误:未有该上课记录33[0m")
    else:
    print("33[31;1m系统错误:class_m2m_lesson表未创建33[0m")
    else:
    print("33[31;1m系统错误:课节未创建33[0m")
    else:
    print("33[31;1m输入错误:班级不存在或学生不在此班级33[0m")
    def show_rank(self):
    '''
    查看课节成绩排名函数
    :return:
    '''
    class_name = input("33[33;0m请输入班级名:33[0m").capitalize().strip()
    class_obj = self.student_obj.class_keys
    for classes in class_obj:
    if classes.class_name == class_name:
    if class_name: # 判断学生是否存在所输入班级中
    lesson_name = input("33[33;0m请输入课节名:33[0m").capitalize().strip()
    lesson_obj = self.session.query(Lesson).filter(Lesson.lesson_name == lesson_name).first()
    if lesson_obj:
    class_m2m_lesson_obj = self.session.query(class_m2m_lesson).filter(
    class_m2m_lesson.class_id == classes.class_id
    ).filter(class_m2m_lesson.lesson_id == lesson_obj.lesson_id).first()
    if class_m2m_lesson_obj:
    study_record_obj = self.session.query(Study_record).filter(
    Study_record.class_m2m_lesson_id == class_m2m_lesson_obj.id
    ).filter(Study_record.stu_id == self.student_obj.stu_id).first()
    if study_record_obj:
    if study_record_obj.status == 'N':
    print('33[32;0m作业提交情况:未提交33[0m')
    print('33[31;0m请按时提交本次课节作业33[0m')
    else:
    print('33[32;0m本次课节作业成绩:【%s】分33[0m' % study_record_obj.score)
    #成绩从大到小排序
    study_score_obj = self.session.query(Study_record.stu_id,Study_record.score).
    filter(Study_record.score>0).
    filter(Study_record.class_m2m_lesson_id == class_m2m_lesson_obj.id).
    order_by(Study_record.score.desc()).limit(10) #只取前十名成绩
    print('成绩排名列表:')
    for study_score in study_score_obj:
    student_obj = self.session.query(Student).
    filter(Student.stu_id == study_score.stu_id).first()
    print('%s 成绩:【%s】'%(student_obj.stu_name,study_score.score))
    else:
    print("33[31;1m系统错误:未有该上课记录33[0m")
    else:
    print("33[31;1m系统错误:class_m2m_lesson表未创建33[0m")
    else:
    print("33[31;1m系统错误:课节未创建33[0m")
    else:
    print("33[31;1m输入错误:班级不存在或学生不在此班级33[0m")
    def exit(self):
    exit('33[31;0m感谢使用管理系统,33[0m')
    student_view
     
     
     
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  • 原文地址:https://www.cnblogs.com/gaodi2345/p/11412837.html
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