day28作业

import os

import uuid

import pickle

from conf import settings

class School:

    def __init__(self,name,addr):

        self.name = name

        self.addr = addr

        self.uuid = str(uuid.uuid4())

        self.grades = {}

        self.save()

        self.save_name_uuid()

    def create_grade(self):

        # 创建班级对象

        name = input("请输入班级名称：").strip()

        grade_obj = Grade(name)

        grade_obj.save()

        # 将班级名称与uuid存字典当成学校的属性。

        self.grades[grade_obj.name] = grade_obj.uuid

        self.save()

        print("创建成功。")

    def save(self):

        file_path = os.path.join(settings.SCHOOL_PATH,str(self.uuid))

        with open(file_path,"wb") as f:

            pickle.dump(self,f)

    def save_name_uuid(self):

        '''将所有学校和对应的uuid保存成字典存放到Info文件中。'''

        try:

            with open(settings.INFO_PATH,"rb") as f:

                school_dict = pickle.load(f)

        except EOFError:

            school_dict = {}

            # school_dict = eval(f.read())

        school_dict[self.name] = self.uuid

        with open(settings.INFO_PATH,"wb") as f:

            pickle.dump(school_dict,f)

class Grade:

    def __init__(self,name):

        self.name = name

        self.uuid = uuid.uuid4()

        self.course = None

        self.students = {}

    def create_course(self):

        name = input("请输入课程名称：").strip()

        period = input("请输入课程周期：").strip()

        price = input("请输入课程价格：").strip()

        course_obj = Course(name,period,price)

        self.course = course_obj.uuid

        self.save()

        print("创建课程成功")

    def save(self):

        file_path = os.path.join(settings.GRADE_PATH, str(self.uuid))

        with open(file_path, "wb") as f:

            pickle.dump(self, f)

class Course:

    def __init__(self,name,period,price):

        self.name = name

        self.period = period

        self.price = price

        self.uuid = uuid.uuid4()

    def save(self):

        file_path = os.path.join(settings.COURSE_PATH, str(self.uuid))

        with open(file_path, "wb") as f:

            pickle.dump(self, f)

class Student:

    def __init__(self,name):

        self.name = name

        self.uuid = uuid.uuid4()

        self.grade = None

    def choice_grade(self):

        with open(settings.INFO_PATH,"rb") as f:

            schools = pickle.load(f)

        while True:

            print("选课".center(40,"="))

            schools_list = list(schools)

            for k,school in enumerate(schools,0):

                print(f"编号：{k}  学校名：{school}")

            choice = input("请输入选择的学校编号：").strip()

            school_uuid = schools[schools_list[int(choice)]]

            school_path = os.path.join(settings.SCHOOL_PATH,school_uuid)

            with open(school_path,"rb") as f:

                school_obj = pickle.load(f)

            grades = list(school_obj.grades)

            for k,grade in enumerate(grades,0):

                print(f"编号：{k}   班级名：{grade}")

            choice2 = input("请输入所选班级编号：").strip()

            grade_uuid = school_obj.grades[grades[int(choice2)]]

            grade_path = os.path.join(settings.GRADE_PATH,str(grade_uuid))

            with open(grade_path,"rb") as f:

                grade_obj = pickle.load(f)

            grade_obj.students[self.name] = self.uuid

            grade_obj.save()

            self.grade = grade_obj.uuid

            print("选课成功")

            break

    def save(self):

        file_path = os.path.join(settings.STUDENT_PATH, str(self.uuid))

        with open(file_path, "wb") as f:

            pickle.dump(self, f)

# 创建两个学校

school_1 = School("魔都校区","魔都飞车站")

school_2 = School("帝都校区","帝都飞盘站")

# 创建班级

school_1.create_grade()

school_1.create_grade()

# 学生选课

stu_1 = Student("tom")

stu_1.choice_grade()
巴特西

day28作业

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