作业22

作业22

# 1、练习上课作业讲解的面向对象代码，明天默写
# 2、基于上课作业讲解的面向对象代码，扩写Student类
# 3、加入序列化与反序列化操作
# 4、对象之间的关联采用id号
# 5、可以通过id找到对应的文件，然后从文件中反序列化出执行的学校、班级、课程、学生对象

import pickle
import uuid


class School:
    name = "old boy"

    def __init__(self, name, adr):
        self.uid = uuid.uuid4()
        self.nickname = name
        self.adr = adr
        self.classes = []

    def show_school(self):
        print("{}({})".format(self.nickname, self.adr).center(50, "="))
        for class_uid in self.classes:
            with open("{}.pkl".format(class_uid), "rb") as f:
                class_obj = pickle.load(f)
            class_obj.show_class()
            class_obj.show_students()
            print("-" * 50)

    def relate_class(self, class_obj):
        self.classes.append(class_obj.uid)

    def save_school(self):
        # print(self.__dict__)
        with open("{}.pkl".format(self.uid), "wb") as f:
            pickle.dump(self, f)
        with open("school","a",encoding="utf-8") as f:
            f.write("{%s:%s}
" %(self.nickname,self.uid))



class Class:
    def __init__(self, name):
        self.uid = uuid.uuid4()
        self.name = name
        self.course_uid = []
        self.students = []

    def show_class(self):
        print("{}".format(self.name), end="    ")
        for course_uid in self.course_uid:
            with open("{}.pkl".format(course_uid), "rb") as f:
                course_obj = pickle.load(f)
            course_obj.show_course()



    def relate_course(self, course_obj):
        self.course_uid.append(course_obj.uid)

    def show_students(self):
        for stu_obj_uid in self.students:
            with open("{}.pkl".format(stu_obj_uid), "rb") as f:
                stu_obj = pickle.load(f)
            stu_obj.show_stu()


    def save_class(self):
        with open("{}.pkl".format(self.uid), "wb") as f:
            pickle.dump(self, f)
        with open("class","a",encoding="utf-8") as f:
            f.write("{%s:%s}
" %(self.name,self.uid))




class Course:
    def __init__(self, name, period, price):
        self.uid = uuid.uuid4()
        self.name = name
        self.period = period
        self.price = price

    def show_course(self):
        print("[{}   {}  {}]".format(self.name, self.period, self.price))

    def save_course(self):
        with open("{}.pkl".format(self.uid), "wb") as f:
            pickle.dump(self, f)
        with open("course","a",encoding="utf-8") as f:
            f.write("{%s:%s}
" %(self.name,self.uid))





class Student:
    def __init__(self, name, age, num, gender):
        self.uid = uuid.uuid4()
        self.name = name
        self.age = age
        self.num = num
        self.gender = gender

    def relate_class(self, class_obj):
        self.class_obj = class_obj
        class_obj.students.append(self.uid)

    def show_stu(self):
        print("姓名:{}    年龄:{}    学号:{}    性别:{}".format(self.name, self.age, self.num, self.gender))

    def save_student(self):
        with open("{}.pkl".format(self.uid), "wb") as f:
            pickle.dump(self, f)
        with open("student", "a",encoding="utf-8") as f:
            f.write("{%s:%s}
" % (self.name, self.uid))



# # 创建新校区,班级,课程,学生
# school_obj1 = School("老男孩魔都校区", "上海虹桥")
# school_obj2 = School("老男孩帝都校区", "北京某某")
# class_obj1 = Class("上海脱产14期")
# class_obj2 = Class("上海脱产15期")
# class_obj3 = Class("北京脱产29期")
# course_obj1 = Course("python全栈开发", "5 mon", 22000)
# course_obj2 = Course("linux 运维课程", "4 mon", 20000)
# stu1 = Student("wu", 22, 1, "male")
# stu2 = Student("egon", 24, 2, "female")
# stu3 = Student("tank", 26, 3, "male")
# stu4 = Student("ha", 28, 4, "female")
#
# # 校区关联班级
# school_obj1.relate_class(class_obj1)
# school_obj1.relate_class(class_obj2)
# school_obj2.relate_class(class_obj3)
# # 班级关联课程
# class_obj1.relate_course(course_obj1)
# class_obj2.relate_course(course_obj2)
# class_obj3.relate_course(course_obj1)
# # 学生选择班级
# stu1.relate_class(class_obj1)
# stu2.relate_class(class_obj2)
# stu3.relate_class(class_obj2)
# stu4.relate_class(class_obj3)
#
#
# # 查看uuid
# print(school_obj1.uid)
# print(school_obj2.uid)
# print(class_obj1.uid)
# print(class_obj2.uid)
# print(class_obj3.uid)
# print(course_obj1.uid)
# print(course_obj2.uid)
# print(stu1.uid)
# print(stu2.uid)
# print(stu3.uid)
# print(stu4.uid)
#
# # 保存信息
# school_obj1.save_school()
# school_obj2.save_school()
# class_obj1.save_class()
# class_obj2.save_class()
# class_obj3.save_class()
# course_obj1.save_course()
# course_obj2.save_course()
# stu1.save_student()
# stu2.save_student()
# stu3.save_student()
# stu4.save_student()

# # 输出信息
# school_obj1.show_school()
# school_obj2.show_school()
# class_obj1.show_students()


# 读取信息
def obj_create(file):
    with open(file,"rb") as f:
        obj = pickle.load(f)
        return obj

school_obj1 = obj_create("1151e0b9-8541-4917-8e12-3f817978ef0d.pkl")

school_obj1.show_school()
school_obj2 = obj_create("31fa891b-3f20-4e37-a1ad-f9157c46e246.pkl")
school_obj2.show_school()

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