4.8作业

一、课程

class Course:
    def __init__(self, name, period, price):
        self.name = name
        self.period = period
        self.price = price

    def tell_course_info(self):
        print(f'课程:{self.name}  课程周期:{self.period}  课程价格:{self.price}')

#定义一个将产生的课程对象写入文件的函数
def creat_course_obj(name,period,price):
    course_obj = Course(name,period, price)
    obj_name=uuid.uuid4()
    with open(f'{obj_name}.pickle','wb') as f:
        pickle.dump(course_obj,f)
    return obj_name

#定义一个通过id查找到文件获得对象的函数，此函数其他对象都可以使用
def get_obj(obj_id):
    with open(f'{obj_id}.pickle', 'rb') as f:
            obj = pickle.load(f)
            return obj

#1.产生课程对象，序列化存入文件中返回id
course_obj1_id=creat_course_obj('py全栈开发','6mons',20000)
course_obj2_id=creat_course_obj('linux运维','6mons',20000)

#2.用id反序列化获得课程对象
# course_obj1=get_obj(course_obj1_id)
# course_obj2=get_obj(course_obj2_id)

#3.查看课程信息
# course_obj1.tell_course_info()
# course_obj2.tell_course_info()

二、班级

# 二、班级
class Class:
    def __init__(self, name):
        self.name = name
        self.course = None

    def related_course(self, course_obj):
        self.course = course_obj

    def tell_course(self):
        print(self.name)
        self.course.tell_course_info()

#定义一个将产生的班级对象写入文件的函数
def creat_class_obj(class_name):
    class_obj = Class(class_name)
    obj_name = uuid.uuid4()
    with open(f'{obj_name}.pickle', 'wb') as f:
        pickle.dump(class_obj, f)
    return obj_name

#1.产生班级对象序列化存入文件
class_obj1_id=creat_class_obj('python脱产14')
class_obj2_id=creat_class_obj('python脱产13')

#2.用id反序列化获得班级对象
class_obj1=get_obj(class_obj1_id)
class_obj2=get_obj(class_obj2_id)
#3.给班级关联课程
class_obj1.related_course(get_obj(course_obj1_id))
class_obj2.related_course(get_obj(course_obj2_id))
#3.查看班级的课程信息
# class_obj1.tell_course()
# class_obj2.tell_course()

三、学校

class School:
    school = 'oldboy'

    def __init__(self, nickname, address):
        self.nickname = nickname
        self.address = address
        self.classes = []

    def related_class(self, class_obj):
        self.classes.append(class_obj)

    def tell_class(self):
        print(self.nickname.center(30, '='))
        for class_obj in self.classes:
            class_obj.tell_course()

#定义一个将产生的学校对象写入文件的函数
def creat_school_obj(nick_name,address):
    school_obj = School(nick_name,address)
    obj_name = uuid.uuid4()
    with open(f'{obj_name}.pickle', 'wb') as f:
        pickle.dump(school_obj, f)
    return obj_name

#1.产生学校对象序列化存入文件
school_obj1_id=creat_school_obj('老男孩魔都校区','上海')
school_obj2_id=creat_school_obj('老男孩帝都校区','北京')

#2.用id反序列化获得学校对象
school_obj1=get_obj(school_obj1_id)
school_obj2=get_obj(school_obj2_id)

#3.给学校关联班级
# school_obj1.related_class(get_obj(class_obj1_id)) #抛出错误因为当前id获得的班级对象是还没有关联课程的班级对象，没有课程对象，
#访问课程对象的属性就报错
# school_obj1.related_class(get_obj(class_obj2_id))
school_obj1.related_class(class_obj1)
school_obj2.related_class(class_obj2)

#3.查看学校班级的信息
school_obj1.tell_class()
school_obj2.tell_class()

四、学生

class Student:
    def __init__(self,name,age,gender,number):
        self.name=name
        self.age=age
        self.gender=gender
        self.number=number
    def related_class(self,class_obj):
        self.student_class=class_obj

    def tell_student_info(self):
        print(f'学生信息:\n'
              f'[姓名：{self.name}  年龄:{self.age}  性别:{self.gender}  学号:{self.number}]')
    def tell_studnt_class(self):
        print(f'学生:{self.name}   所在班级:{self.student_class.name}')
        self.student_class.tell_course()

五、讲师

class Teacher:
    def __init__(self,name,age,price,grade):
        self.name=name
        self.age=age
        self.price=price
        self.grade=grade
        self.mark_students={}

    def teacher_mark(self,student_obj,score):
        self.mark_student_name=student_obj.name
        self.student_score=score
        self.mark_students.update({self.mark_student_name:self.student_score})

    def tell_teacher_info(self):
        print(f'老师信息：\n'
              f'[姓名:{self.name}  年龄:{self.age}岁  薪资:{self.price}  讲师等级:{self.grade}]')
    def tell_student_score(self,student_name):
        self.mark_student_name=student_name
        self.student_score=self.mark_students.get(self.mark_student_name)
        print(f'学生姓名:{self.mark_student_name}   得分:[{ self.student_score}]   打分老师:{self.name}')