'''
# 1、练习上课作业讲解的面向对象代码
# 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:
def __init__(self, name, addr):
self.name = name
self.addr = addr
self.classes = []
def save(self):
with open(f'school_data/{self.name}.pick', 'wb') as f:
pickle.dump(self, f)
def select(self):
with open(f'school_data/{self.name}.pick', 'rb') as f:
school_obj = pickle.load(f)
school_obj.tell_school()
def related_class(self, class_id):
self.classes.append(class_id)
def tell_school(self):
print(self.name.center(60, '='))
for class_id in self.classes:
with open(f'class_data/{class_id}.pick', 'rb') as f:
class_obj = pickle.load(f)
class_obj.tell_class()
class Class:
def __init__(self, name):
self.id = uuid.uuid4()
self.name = name
self.course = None
self.students = []
def save(self):
with open(f'class_data/{self.id}.pick', 'wb') as f:
pickle.dump(self, f)
def related_course(self, course_id):
self.course = course_id
def add_student(self, stu_id):
self.students.append(stu_id)
def tell_class(self):
print(self.name, end=' ')
with open(f'class_data/course_data/{self.course}.pick', 'rb') as course_f:
course_obj = pickle.load(course_f)
course_obj.tell_course()
for stu_id in self.students:
with open(f'class_data/student_data/{stu_id}.pick', 'rb') as stu_f:
# 获取对应班级的学生信息
stu_obj = pickle.load(stu_f)
stu_obj.tell_student()
class Course:
def __init__(self, name, time, price):
self.id = uuid.uuid4()
self.name = name
self.time = time
self.price = price
def save(self):
with open(f'class_data/course_data/{self.id}.pick', 'wb') as f:
pickle.dump(self, f)
def tell_course(self):
print(f'<课程：{self.name} 课时：{self.time} 价格：{self.price}>')
class Student:
def __init__(self, name, age, sex):
self.stu_id = uuid.uuid4()
self.__name = name
self.__age = age
self.__sex = sex
def save(self):
with open(f'class_data/student_data/{self.stu_id}.pick', 'wb') as f:
pickle.dump(self, f)
def tell_student(self):
print(f' 学生：{self.__name} <年龄：{self.__age} 性别：{self.__sex}>')
# 创建学校对象
school_obj1 = School('Shanghai', '上海')
school_obj2 = School('Beijing', '北京')
# 创建班级对象
class_obj1 = Class('脱产14期')
class_obj2 = Class('脱产15期')
class_obj3 = Class('脱产29期')
# 创建课程对象
course_obj1 = Course('python全栈开发', '6 months', 20000)
course_obj2 = Course('linux运维', '5 months', 18000)
# 将课程对象写入文件
course_obj1.save()
course_obj2.save()
# 创建学生对象
stu_obj1 = Student('莎莉娜', 18, '女')
stu_obj2 = Student('小智', 18, '男')
stu_obj3 = Student('小霞', 18, '女')
stu_obj4 = Student('小瑶', 18, '女')
# 将学生信息存入文件
stu_obj1.save()
stu_obj2.save()
stu_obj3.save()
stu_obj4.save()
# 班级关联课程
class_obj1.related_course(course_obj1.id)
class_obj2.related_course(course_obj2.id)
class_obj3.related_course(course_obj1.id)
# 学生选择班级
class_obj1.add_student(stu_obj1.stu_id)
class_obj1.add_student(stu_obj2.stu_id)
class_obj2.add_student(stu_obj3.stu_id)
class_obj3.add_student(stu_obj4.stu_id)
# 将班级信息存入文件
class_obj1.save()
class_obj2.save()
class_obj3.save()
# 讲班级id存入学校班级列表
school_obj1.related_class(class_obj1.id)
school_obj1.related_class(class_obj2.id)
school_obj2.related_class(class_obj3.id)
# 讲学校对象存入文件
school_obj1.save()
school_obj2.save()
# 查看学校数据
school_obj1.select()
school_obj2.select()