day29 homework

1. Introduce property access control + property

2. Introduce the concepts of inheritance and derivation to reduce code redundancy

Note: To satisfy the relationship of "what" and not to satisfy the relationship of "yes", do not inherit

import uuid
import pickle
import os

class Save:
    def save(self):
        dir_path = f'{self.__class__.__name__}'
        if not os.path.exists(dir_path):
            os.mkdir(dir_path)
        with open(f'{dir_path}/{self.id}','wb') as f:
            pickle.dump(self,f)
    def select(self):
        dir_path = f'{self.__class__.__name__}'
        if not os.path.exists(dir_path):
            os.mkdir(dir_path)
        with open(f'{dir_path}/{self.id}', 'rb') as f:
            return pickle.load(f)
# 学校类
class School(Save):
    #校区的名字：如"老男孩上海校区"
    #校区的地址：如"上海虹桥"
    def __init__(self,name,area):
        self.name = name
        self.area = area
        self.id = uuid.uuid4()
        self.classlist = []
        self.save()
    #校区创建完毕后，可以为每个校区创建班级
    def choose_class(self,class_name):
        scl_obj = SchoolClass(class_name,self.name)
        self.classlist.append(scl_obj.id)
        self.save()

# 教室类
class SchoolClass(Save):
    #班级名字
    #班级所在校区
    def __init__(self,name,campus):
        self.id = uuid.uuid4()
        self.name = name
        self.campus = campus
        self.course_list = []
        self.save()
    #班级创建完毕后，可以为每个班级关联课程
    def choose_course(self,course_name,circle,price):
        cou_obj = Course(course_name,circle,price)
        self.course_list.append(cou_obj.id)
        self.save()
# 课程类
class Course(Save):
    #课程名字
    #课程周期
    #课程价格
    def __init__(self,cou_name,circle,price):
        self.course_name = cou_name
        self.id = uuid.uuid4()
        self.circle = circle
        self.price = price
        self.save()
# 学生类
class Student(Save):
    def __init__(self,s_school,stu_name,age,sno,gender):
        #学生的学校
        #学生的姓名
        #学生的年龄
        #学号
        #学生的性别
        self.id = uuid.uuid4()
        self.student_school = s_school
        self.student_name = stu_name
        self.student_age = age
        self.student_sno = sno
        self.student_gender = gender
        self.save()
    #学生创建完毕后，学生可以选择班级
    def choose_class(self,class_name):
        self.class_name = class_name
        self.save()
# 老师类
class Teacher(Save):
    def __init__(self,t_name,t_age,salary,level):
        #老师的名字
        #老师的年龄
        #老师的薪资
        #老师的等级
        self.id = uuid.uuid4()
        self.teacheer_name = t_name
        self.teacheer_age = t_age
        self.teacheer_salary = salary
        self.teacheer_level = level
        self.save()
        #老师创建完毕后，可以为学生打分
    def student_grade(self,student_obj,grade):
        student_obj.grade = grade
        self.save()

# 创建学校对象
school_obj = School('老男孩','上海')

# 创建班级对象
school_obj.choose_class('脱产14期')


print(school_obj.__dict__)