1、readme
作业名称：选课系统 测试环境：win7系统，python3.7.0，工具:pycharm-community-2018.1.4 题目：选课系统开发，要求有四种角色:学校、学员、课程、讲师 详细要求: 1、创建北京、上海 2 所学校 2、创建linux , python , go 3个课程 ， linux\py 在北京开， go 在上海开 3、课程包含，周期，价格，通过学校创建课程 4、通过学校创建班级， 班级关联课程、讲师 5、创建学员时，选择学校，关联班级 6、创建讲师角色时要关联学校 7、提供两个角色接口 8、为学员、讲师、管理员分别提供用户界面，并提供对应功能： (1) 学员视图， 可以注册， 交学费， 选择班级， (2) 讲师视图， 讲师可管理自己的班级， 上课时选择班级， 查看班级学员列表 ， 修改所管理的学员的成绩 (3) 管理视图，创建讲师， 创建班级，创建课程 注1：上面的操作产生的数据都通过pickle序列化保存到文件里 注2：此作业必须画流程图，图中标注好不同类或对象之间的调用关系 说明：1、学生账号、讲师账号，统一由管理员 2、缺点本次作业只是完成了基本功能，忽略了唯一性：注册用户，添加课程等
3、没有实现学生注册，学生缴费功能----有待完善
后续需要提高改动：（1）把文件拆解开，不同模块间相互导入，（2）代码简化
#-----由管理员初始化学员、讲师、管理员三个账号-----
import sys,os,pickle BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) sys.path.append(BASE_DIR) from conf import settings class School: def __init__(self,name,address): self.name = name self.address = address self.teacher = [] self.student = [] self.course = [] def show_class(self): with open(settings.path_class_info, 'rb+') as f: count = 0 while True: try: count += 1 class_obj = pickle.load(f) print(f"{count}班级信息：{class_obj.__dict__}") except EOFError: break def create_class(self): print('创建班级') name = input('class_name:').strip() course = input('course:').strip() time = input('class_time:').strip() period = input('class_period:').strip() class_teacher = input('class_teacher:').strip() class_obj = ForClass(name, course, time, period) class_obj.teacher.append(class_teacher) with open(settings.path_class_info, 'ab') as f: pickle.dump(class_obj, f) print(f"\033[0;32;40m班级{class_obj.name}创建成功\033[0m") def create_course(self): print('\033[1;31;44m 创建课程\033[0m ') name = input('course_name(python/linux/go):').strip() price = input('course_price:').strip() period = input('course_period:').strip() city = input('city：linux/py在北京，go在上海>').strip() course_obj = Course(name, price, period, city) with open(settings.path_course_info, 'ab') as f: pickle.dump(course_obj, f) # pickle和json进文件是自动换行 print(f"\033[32;0m---课程{course_obj.name}创建成功---\033[0m") class Person: def __init__(self, name): self.name = name # self.sex = sex # self.age = age def show_courses(self): print('查看可选课程') with open(settings.path_course_info, 'rb') as f: count = 0 while True: try: count += 1 course_obj = pickle.load(f) print(count, course_obj.name, course_obj.price, course_obj.period,course_obj.city) except EOFError: break class Course: def __init__(self,name,price,period,city): self.name = name self.price = price self.period = period self.city = city self.student = [] self.teacher = [] class ForClass: def __init__(self,name,course,time,period): self.name = name self.course = course self.time = time self.period = period self.student = [] self.teacher = [] class pay_tuition: def __init__(self,name,course_name,status): self.name = name self.course_name =course_name self.status = status class Student_score: def __init__(self,class_name,stu_name,stu_test,stu_test_score): self.class_name = class_name self.stu_name = stu_name self.stu_test = stu_test self.stu_test_score = stu_test_score self.score = [] # 用于保存学生的成绩
#---------------------学生------------------------------------- class Student(Person,School): operate_lst = [ ('交学费', 'pay_tuition'), ('选择班级', 'choice_class'), ('查看可选课程', 'show_courses'), ('选择课程', 'select_course'), ('查看已选课程', 'check_selected_course'), ('查看成绩', 'check_stu_score1'), ('退出', 'exit')] def __init__(self, name): Person.__init__(self, name) # 继承父类的属性 self.courses = [] # 班级名，学校名 self.classes = [] self.course_money = {} self.school = [] self.score = [] def pay_tuition(self): print('交学费,根据所选课程交学费') print('查看已选课程') with open(settings.path_student_info, 'rb') as f: while True: try: stu_obj = pickle.load(f) if self.name in stu_obj.name: if len(stu_obj.courses) == 0: print('----您没有添加课程----') exit() else: for obj in stu_obj.courses: print(obj.__dict__) # 输出{'name': 'python', 'price': '18000', 'period': '5个月', 'city': '北京', 'student': [], 'teacher': []} except EOFError: break name = input('请输入课程名>>>') while True: money = int(input('请输入金额')) print('缴费成功') status = '缴费成功' pay_obj = pay_tuition(self.name,name,status) with open(settings.path_pay_tuition_info,'ab') as f: pickle.dump(pay_obj,f) def choice_class(self): print('选择班级') # 查看班级 self.show_class() num = int(input('请选择序号：num>>>')) count = 1 with open(settings.path_class_info, 'rb') as f: while True: try: class_obj = pickle.load(f) class_obj.stu_name = self.__dict__['name'] if count == num: # self.classes.append(class_obj) print(f"------您选择了班级{class_obj.name}----------") print() with open(settings.path_student_info, 'wb+') as f2: # stu_obj = pickle.load(f) self.classes.append(class_obj.name) pickle.dump(self, f2)#----------------------不知道行不行------刚开始管理员创建用户是否生成了对象 break count += 1 except EOFError: print('没有您选择的班级') break def select_course(self): print('选择课程') self.show_courses() num = int(input('请选择序号num>>>')) count = 1 with open(settings.path_course_info, 'rb') as f: while True: try: course_obj = pickle.load(f) # print(course_obj.__dict__)#对象的数据属性字典 if count == num: # self.courses.append(course_obj) print(f"您选择了{course_obj.name}") # 把学生选择的课程写入学生对象中 with open(settings.path_student_info,'wb+') as f: # stu_obj = pickle.load(f) self.courses.append(course_obj) pickle.dump(self,f) print() # with open(settings.path_course_selected_info, 'ab') as f2: # pickle.dump(course_obj, f2) break count += 1 # 循环的次数-----》文件中的行数 except EOFError: print('没有您选择的课程') break def check_selected_course(self): print('查看已选课程') with open(settings.path_student_info, 'rb') as f: while True: try: stu_obj = pickle.load(f) if stu_obj.name == self.name: if len(stu_obj.courses) == 0: print('----您没有添加课程----') break else: for obj in stu_obj.courses: print(obj.__dict__) except Exception: print('没有这个学生') break def check_stu_score1(self): with open(settings.path_stu_score,'rb') as f: while True: try: stu_score = pickle.load(f) if stu_score.stu_name == self.name: print(stu_score.__dict__) except Exception: print('没有这个学生') break def exit(self): exit() @staticmethod def init(name): # 返回一个学生对象 # 在学生对象文件中找 with open(settings.path_student_info, 'rb') as f: while True: try: stu_obj = pickle.load(f) if stu_obj.name == name: return stu_obj except Exception: print('没有这个学生') break #----------------------讲师------------------------------------ class Teacher(School): operate_lst = [('管理班级', 'manage_class'), ('退出','exit')] def __init__(self, name): Person.__init__(self,name) # self.name_school = name_school # self.city_school = city_school self.classs = [] self.course = [] self.school = [] def manage_class(self): print('请选择班级') self.show_class() num = int(input('请选择序号num>>>：')) count = 1 with open(settings.path_class_info, 'rb') as f: while True: try: class_obj = pickle.load(f) # print(course_obj.__dict__)#对象的数据属性字典 if count == num: print(f"----您选择了class_name:{class_obj.name}----") choice = input(""" 请选择序号操作： 1查看班级学员列表 2创建学生成绩 3查看学生成绩 4修改学生成绩 5退出 >>""") while True: if choice == '1': self.check_student(class_obj.name)#传参优化代码 break elif choice == '2': self.create_stu_score(class_obj.name) print() break elif choice == '3': self.check_stu_score(class_obj.name) break elif choice == '4': self.modify_stu_score(class_obj.name) break elif choice == '5': break else: continue break count += 1 # 循环的次数-----》文件中的行数 except EOFError: print('没有您选择的班级') break def check_student(self,class_name):#上面传参class_name优化代码 with open(settings.path_student_info, 'rb') as f: while True: try: stu_obj = pickle.load(f) if class_name in stu_obj.classes: print(f"学生名单：{stu_obj.name}") except EOFError: break def create_stu_score(self,class_name): self.check_student(class_name) # class_name = input('class_name:>').strip() while True: stu_name = input('请输入需要创建成绩的学生姓名stu_name:>(q,退出)').strip() if stu_name == 'q': break stu_test = input('考试名称stu_test:>').strip() stu_test_score = input('stu_test_score').strip() stu_score_object = Student_score(class_name, stu_name, stu_test, stu_test_score) with open(settings.path_stu_score, 'ab') as f: pickle.dump(stu_score_object, f) print(f"学生{stu_name}成绩创建成功") print('---------------------') def check_stu_score(self,class_name): print('-----查看所选班级学生成绩-------') with open(settings.path_stu_score, 'rb') as f: while True: try: stu_score_object = pickle.load(f) if class_name == stu_score_object.class_name: print(f"学生成绩单：{stu_score_object.stu_name}" f",{stu_score_object.stu_test}," f"{stu_score_object.stu_test_score}") except EOFError: break def modify_stu_score(self,class_name): self.check_stu_score(class_name) with open(settings.path_stu_score, 'rb+') as f: obj = [] student_name = input('修改学生成绩，请输入姓名(q退出):>').strip() modify_score = input(' modify_test_score(0-100)').strip() while True: try: stu_score_object = pickle.load(f)#每次反序列化一个对象 if student_name == stu_score_object.stu_name: stu_score_object.stu_test_score = modify_score obj.append(stu_score_object) print('分数修改成功') else: obj.append(stu_score_object) except EOFError: break with open(settings.path_stu_score, 'ab+') as f2: f2.seek(0) f2.truncate() for i in obj: pickle.dump(i, f2) print(f"{student_name}成绩修改成功") #占内存的修改方式 # with open(settings.path_db, 'ab+') as f2: # -----这里有问题------多次dump,多次loap def exit(self): exit() @classmethod def init(cls, name): return cls(name) #-------------------------管理员-------------------------- class Admin(Person,School): operate_lst = [('创建课程','create_course'), ('创建班级','create_class'), ('查看班级','show_class'), ('创建讲师','create_teacher'), ('查看所有课程','show_courses'), ('创建校区','create_school'), ('创建学员','create_stu'), ('查看学生','show_students'), ('退出','exit')] def __init__(self,name): Person.__init__(self,name)#继承 重用父类函数属性 def create_teacher(self): print('\033[1;31;44m创建讲师\033[0m') teacher_name = input('teacher name:').strip() teacher_password = input('teacher password:').strip() # sex = input('sex:').strip() # age = input('age:').strip() with open(settings.path_school_info,'rb') as f: while True: try: school_obj = pickle.load(f) print(f"已创建的学校名单：{school_obj.name}") except EOFError: break tea_school = input('school（上海 or 北京）:').strip() teacher_auth = f"\n{teacher_name}|{teacher_password}|Teacher" teacher_obj = Teacher(teacher_name) teacher_obj.school.append(tea_school) with open(settings.path_teacher_info,'ab')as f: pickle.dump(teacher_obj,f) print(f'-----讲师{teacher_name}创建成功------') with open(settings.path_account, 'a', encoding='utf-8') as f: f.write(teacher_auth) def create_school(self): print('\033[1;31;44m创建校区\033[0m') name = input('name：(北京 or 上海):>').strip() address = input('address：北京市 or 上海市>').strip() school_obj = School(name,address) with open(settings.path_school_info, 'ab') as f: pickle.dump(school_obj, f) print(f"\033[1;42;40m学校{school_obj.name}在{school_obj.address}创建成功\033[0m") def create_stu(self): print('\033[1;31;44m创建学员\033[0m') name = input('student name:').strip() password = input('student password:').strip() # sex = input('sex:').strip() # age = input('age').strip() print('\033[0;32;40m----为学员选择学校----\033[0m') with open(settings.path_school_info, 'rb') as f: while True: try: school_obj = pickle.load(f) print(f"已创建的学校信息：{school_obj.name}") except EOFError: break name_school = input('请为学员选择学校，school_name:>').strip() # city_school = input('school_city:>').strip() stu_auth = f"\n{name}|{password}|Student" stu_obj = Student(name) stu_obj.school.append(name_school) with open(settings.path_account, 'a', encoding='utf-8') as f: f.write(stu_auth) print(f"\033[0;32;40m学员 {stu_obj.name} 创建成功\033[0m ") print('\033[0;32;40m-----为学员选择班级-----\033[0m') self.show_class() class_name = input(' class_name:>').strip() stu_obj.classes.append(class_name) with open(settings.path_student_info, 'ab+') as f: pickle.dump(stu_obj, f) print(f'\033[0;32;40m------学员{name}信息创建成功-----\033[0m') def show_students(self): with open(settings.path_student_info,'rb') as f: count = 0 while True: try: count += 1 course_obj = pickle.load(f) print(count,course_obj.name) except EOFError: break print() def exit(self): exit() @classmethod def init(cls,name): return cls(name) def login(): print('\033[32;1m----欢迎登入选课系统----\033[0m') name =input('username:>').strip() password = input('password:>').strip() with open(settings.path_account ,'r',encoding='utf-8') as f: for line in f: user_name,pass_word,identify = line.strip().split('|') if user_name == name and password == pass_word: return {'result':True,'name':name,'id':identify} else: return {'result':False,'name':name} #-------------------------------主程序--------------------------- ret = login() if ret['result']: print(f"\033[1;31;40m---{ret['id']},登录成功----\033[0m") while True: # 当前内存空间有，充分的利用 反射 if hasattr(sys.modules[__name__],ret['id']): cls = getattr(sys.modules[__name__],ret['id']) obj = cls.init(ret['name']) #例如 Student(student) # obj =cls(ret['name']) for id,item in enumerate(cls.operate_lst,1): print(id,item[0]) func_str =cls.operate_lst[int(input('>>>'))-1][1] if hasattr(obj,func_str): getattr(obj,func_str)() else: print('----输入错误，请重新输入-----') ret = login()