【python之路34】面向对象作业之学生选课系统
一、需求：
1、可以注册管理员账号，管理员账号可以创建老师和课程
2、学生可以注册和登陆，学生可以从课程列表选课，可以进行上课登记查看
二、代码
1、文件目录
bin 存放可执行文件
config 存放可配置文件
db 存放数据文件
lib 存放实现类
目录结构如图：
2、admin.py 中的代码
#!usr/bin/env python # -*- coding:utf-8 -*- """admin注册登录，以及用admin账号创建老师和课程""" import pickle import os import sys sys.path.append(os.path.dirname(os.path.dirname(__file__))) #import time from config import setting from lib.models import * #导入所有类 def login(): """用户登陆""" username = input("请输入用户名：") pwd = input('请输入密码：') if os.path.exists(os.path.join(setting.ADMIN_PATH ,username)): with open(os.path.join(setting.ADMIN_PATH ,username), 'rb') as f: admin_obj = pickle.load(f) if admin_obj.login(username, pwd): print('登陆成功！') return admin_obj else: print('密码错误！') else: print('账号不存在！') exit() def regester(): """用户注册""" username = input("请输入用户名：") pwd = input('请输入密码：') adm = Admin() adm.regester(username, pwd) def creat_teacher(admin_obj): li_teacher = [] while True: name = input('请输入要创建老师的名字,Q退出：') if name == "Q": break age = input('请输入要创建老师的年龄：') obj = Teacher(name,age,admin_obj) li_teacher.append(obj) if os.path.exists(setting.TEACHER_PATH): read_teacher = pickle.load(open(setting.TEACHER_PATH,'rb')) li_teacher.extend(read_teacher) pickle.dump(li_teacher,open(setting.TEACHER_PATH,'wb')) #print(li_teacher) def creat_course(admin_obj): print('老师信息：') teacher_list = pickle.load(open(setting.TEACHER_PATH,'rb')) for num,item in enumerate(teacher_list,1): print(num, item.name, item.age, item.creat_time, item.admin_obj.username) course_li = [] while True: course_name = input('请输入课程名（Q退出）：') if course_name == "Q": break cost = input('请输入课时费：') num = input('请选择老师的序号：') course_obj = Course(course_name, cost, teacher_list[int(num)-1], admin_obj) course_li.append(course_obj) if os.path.exists(setting.COURSE_PATH): read_course = pickle.load(open(setting.COURSE_PATH,'rb')) course_li.extend(read_course) pickle.dump(course_li, open(setting.COURSE_PATH,'wb')) def main(): isregsterOrlogin = input('登陆请按1，注册请按2\n') if isregsterOrlogin == '1': admin_obj = login() #登陆 creat_teacher(admin_obj) #创建老师，写进文件teacher/teacher creat_course(admin_obj) #创建课程 elif isregsterOrlogin == '2': regester() #注册 if __name__ == '__main__': main()
3、student.py 中的代码
#!usr/bin/env python # -*- coding:utf-8 -*- import sys import os sys.path.append(os.path.dirname(os.path.dirname(__file__))) from config import setting import pickle from lib.models import * def login(): username = input('请输入用户名：') pwd = input('请输入密码：') if os.path.exists(os.path.join(setting.STUDENT_PATH, username)): student_obj = pickle.load(open(os.path.join(setting.STUDENT_PATH, username),'rb')) if student_obj.login(username, pwd): print('登陆成功！') return student_obj else: print('密码错误') else: print('用户名不存在！') def register(): username = input('请输入用户名：') pwd = input('请输入密码：') student_obj = Student() student_obj.register(username, pwd) def choose_course(student_obj): """选择课程""" course_obj_list = pickle.load(open(setting.COURSE_PATH, 'rb')) for num,item in enumerate(course_obj_list, 1): print(num, item.course_name, item.cost, item.teacher_obj.name) while True: num = input('请选择课程序号(Q退出)：') if num == "Q": break if course_obj_list[int(num) - 1] not in student_obj.choose_course_list: student_obj.choose_course_list.append(course_obj_list[int(num) - 1]) pickle.dump(student_obj, open(os.path.join(setting.STUDENT_PATH, student_obj.username), 'wb')) def show_choose_course(student_obj): for num,item in enumerate(student_obj.choose_course_list, 1): print(num, item.course_name, item.cost, item.teacher_obj.name) def attend_course(student_obj): print('选择的课程有：') show_choose_course(student_obj) while True: num = input('请输入您参加课程的序号(Q退出)：') if num == "Q": break student_obj.attend_course_list.append(student_obj.choose_course_list[int(num) - 1]) pickle.dump(student_obj, open(os.path.join(setting.STUDENT_PATH, student_obj.username), 'wb')) def show_attend_course(student_obj): for num,item in enumerate(student_obj.attend_course_list, 1): print(num, item.course_name, item.cost, item.teacher_obj.name) def main(): inp = input('登陆请按1,注册请按2\n>>>>：') if inp == '1': student_obj = login() temp = input('选课请按1，显示已选课程请按2，上课请按3，显示上课请按4 :') if temp == '1': choose_course(student_obj) elif temp == '2': show_choose_course(student_obj) elif temp == '3': attend_course(student_obj) elif temp == '4': show_attend_course(student_obj) elif inp == '2': register() if __name__ == '__main__': main()
4、setting.py 中的代码
#!usr/bin/env python # -*- coding:utf-8 -*- """路径配置， py文件路径变了，或db下目录路径变了，需修改下面的路径""" import os TEACHER_PATH = os.path.join(os.path.dirname(os.path.dirname(__file__)),'db','teacher','teachers') COURSE_PATH = os.path.join(os.path.dirname(os.path.dirname(__file__)),'db','course','courses') ADMIN_PATH = os.path.join(os.path.dirname(os.path.dirname(__file__)),'db','admin') STUDENT_PATH = os.path.join(os.path.dirname(os.path.dirname(__file__)),'db','student')
5、models.py 中的代码
#!usr/bin/env python # -*- coding:utf-8 -*- """类""" import time from config import setting import os import pickle class Admin: def __init__(self): self.username = None self.psw = None def login(self,username,psw): """管理员登陆""" if self.username == username and self.psw == psw: return True else: return False def regester(self,username , pwd): """管理员用户注册""" self.username = username self.psw = pwd with open(os.path.join(setting.ADMIN_PATH,self.username),'wb') as f: pickle.dump(self,f) class Teacher: """老师类""" def __init__(self, name, age, admin_obj): self.name = name self.age = age self.creat_time = time.strftime('%Y-%m-%d %H:%M:%S') self.admin_obj = admin_obj class Course: def __init__(self,course_name,cost,teacher_obj,admin_obj): self.course_name = course_name self.cost = cost self.creat_time = time.strftime('%Y-%m-%d %H:%M:%S') self.teacher_obj = teacher_obj self.admin_obj = admin_obj class Student: def __init__(self): self.username = None self.psw = None self.choose_course_list = [] self.attend_course_list = [] def login(self,username,psw): if self.username == username and self.psw == psw: return True else: return False def register(self, username, psw): self.username = username self.psw = psw with open(os.path.join(setting.STUDENT_PATH, self.username), 'wb') as f: pickle.dump(self,f)
