校园管理系统（02） 需求： 从“学生选课系统” 这几个字就可以看出来，我们最核心的功能其实只有 选课。 角色： 学生、管理员 功能： 登陆 ： 管理员和学生都可以登陆，且登陆之后可以自动区分身份 选课 ： 学生可以自由的为自己选择课程 创建用户 ： 选课系统是面向本校学生的，因此所有的用户都应该由管理员完 成 查看选课情况 ：每个学生可以查看自己的选课情况，而管理员应该可以查看 所有学生的信息 工作流程： 登陆 ：用户输入用户名和密码 判断身份 ：在登陆成果的时候应该可以直接判断出用户的身份 是学生、讲师 还是管理员 学生用户 ：对于学生用户来说，登陆的工作几乎不变 1、查看所有课程 2、选择课程 3、查看所选课程 4、退出程序 管理员用户：管理员用户也可以做更多的事情 1、创建课程 2、创建学生学生账号 3、查看所有课程 4、查看所有学生 5、查看所有学生的选课情况 # 讲师进阶需求 6、创建讲师 7、为讲师指定班级 8、创建班级 9、为学生指定班级 10、退出程序 讲师用户 ：对于讲师用户来说，可以完成的功能如下 1、查看所有课程 2、查看所教班级 3、查看班级中的学生 4、退出程序
学生选课流程
readme文件信息
import os import sys base_path = os.path.dirname(os.path.dirname(__file__)) sys.path.append(base_path) from core import cores if __name__ == \'__main__\': cores.start()
userinfo = r\'D:\python_23\day07\db\userinfo\' courseinfo = r\'D:\python_23\day07\db\courseinfo\' select_course = r\'D:\python_23\day07\db\select_course\' gradeinfo = r\'D:\python_23\day07\db\gradeinfo\' tearch_grade = r\'D:\python_23\day07\db\tearch_grade\' student_grade = r\'D:\python_23\day07\db\student_grade\'
#登录 import hashlib def md5(arg): # 这是加密函数，将传进来的函数加密 md5_pwd = hashlib.md5(bytes(\'123\', encoding=\'utf-8\')) md5_pwd.update(bytes(arg, encoding=\'utf-8\')) return md5_pwd.hexdigest() # 返回加密的数据 from conf import settings def login(): usr = input(\'please user：\') pwd = input(\'please password: \') with open(settings.userinfo,\'r\') as f: for line in f: user,passwd,identify = line.strip().split(\'|\') if user == usr and passwd == md5(pwd): print(\'登录成功\') return {\'user\':user,\'identify\':identify} else: print(\'登录失败，输入正确的账号密码\') return {\'user\': user, \'identify\': None}
#登录 import sys import os from core import auth from conf import settings import pickle import hashlib def md5(arg): # 这是加密函数，将传进来的函数加密 md5_pwd = hashlib.md5(bytes(\'123\', encoding=\'utf-8\')) md5_pwd.update(bytes(arg, encoding=\'utf-8\')) return md5_pwd.hexdigest() # 返回加密的数据 class Die: def show_select_courese(self): with open(settings.courseinfo,\'rb\') as f: while True: try: obj = pickle.load(f) print(\'课程名字:%s,课程价格:%s,课程周期:%s，教导老师:%s\' % (obj.name, obj.price, obj.period, obj.tearch)) except EOFError: break class Course: def __init__(self,name,price,period,tearch): self.name = name self.price = price self.period = period self.tearch = tearch class Student: operat_list = [(\'查看可选课程\',\'show_courese\'),(\'选择课程\',\'choose_course\'),(\'查看已选课程\',\'show_select_courese\'),(\'退出\',\'exit\')] courses_list1 = [] def __init__(self,name): self.name = name def show_courese(self): Die.show_select_courese(self.name) def choose_course(self): Die.show_select_courese(self.name) with open(settings.select_course, \'ab\') as f1: cours = input(\'请选择要学习课程名字:\') if cours in Student.courses_list1: print(\'课程已存在\') else: Student.courses_list1.append(cours) pickle.dump({self.name: Student.courses_list1}, f1) print(\'用户%s,添加课程%s成功\' % (self.name, cours)) # pickle.dump({ret[\'user\']:Student.courses_list1},f1) # print(\'用户%s,添加课程%s成功\'%(ret[\'user\'],cours)) def show_select_courese(self): with open(settings.select_course, \'rb\') as f1: while True: try: obj = pickle.load(f1) print(obj) except EOFError: break def exit(self): exit(\'欢迎再来\') class Manager(Die): operat_list = [(\'创建课程\', \'create_course\'), (\'创建学生\', \'create_student\'), (\'查看可选课程\', \'show_select_course\'), (\'查看所有学生\', \'show_select_student\'), (\'查看所有学生和已选课程\', \'show_stu_course\'), (\'创建讲师\', \'create_tearch\'), (\'为讲师指定班级\', \'tearch_grade\'), (\'创建班级\', \'create_grade\'), (\'为学生指定班级\', \'select_stu_grade\'), (\'退出\', \'exit\')] def __init__(self,name): self.name = name def create_course(self): name = input(\'请输入课程:\') price = input(\'价格:\') period = input(\'周期:\') tearch = input(\'tearch:\') course = Course(name,price,period,tearch) with open(settings.courseinfo,\'ab\') as f: pickle.dump(course,f) print(\'课程创建成功\') def create_student(self): user = input(\'请输入创建的学生名字: \') pwd = input(\'请输入密码: \') ret = input(\'输入学生的类别，例如Student:\') if ret == \'Student\': course = \'\n%s|%s|%s\'%(user,md5(pwd),ret) with open(settings.userinfo,\'a\') as f: f.write(\'%s\'%course) print(\'%s创建成功\'%user) else: print(\'您输入的不是Student\') def show_select_course(self): Die.show_select_courese(self.name) def show_select_student(self): with open(settings.userinfo,\'r\') as f: for i in f: name,pwd,identify = i.strip().split(\'|\') if identify == \'Manager\' or identify == \'Tearch\': pass else: print(name) def show_stu_course(self): with open(settings.select_course, \'rb\') as f1: while True: try: obj = pickle.load(f1) for x,y in obj.items(): print(\'用户%s一共学习了%s课程\'%(x,y)) # print(obj) except EOFError: break def create_tearch(self): user = input(\'请输入创建的讲师名字: \') pwd = input(\'请输入密码: \') ret = input(\'输入讲师的类别，例如Tearch:\') if ret == \'Tearch\': course = \'\n%s|%s|%s\'%(user,md5(pwd),ret) with open(settings.userinfo,\'a\') as f: f.write(\'%s\'%course) print(\'%s老师创建成功\'%user) else: print(\'您输入的不是Student\') def tearch_grade(self): grade_list = [] with open(settings.userinfo,\'r\') as f: for line in f: name,pwd,identify = line.strip().split(\'|\') with open(settings.gradeinfo,\'rb\') as f1: obj = pickle.load(f1) grade_list.append(obj) if identify == \'Tearch\': print(\'可以为%s老师分配班级有\n(%s)班\'%(name,obj)) print(\'-------------\') grade = int(input(\'请输入班级号\')) with open(settings.tearch_grade,\'ab\') as f2: pickle.dump({name:grade_list},f2) print(\'%s老师已经为%s班的讲师\'%(name,grade)) def create_grade(self): grade = input(\'请输入您要创建的班级号\') with open(settings.gradeinfo,\'ab\') as f: pickle.dump(grade,f) print(\'%s号班级已经创建成功\'%grade) def select_stu_grade(self): stu_grade = [] with open(settings.userinfo,\'r\') as f: with open(settings.gradeinfo, \'rb\') as f1: obj = pickle.load(f1) for line in f: name, pwd, identify = line.strip().split(\'|\') if identify == \'Manager\' or identify == \'Tearch\': pass else: print(\'请为下面(%s)学生选择班级,\n可选班级有(%s)号班级\n\'%(name,obj)) ret = input(\'请输入要选择的班级号\') # stu_grade.append(\'ret\') with open(settings.student_grade,\'ab\') as f3: pickle.dump({name:ret},f3) print(\'学生%s已经加入到%s班级\'%(name,ret)) def exit(self): exit(\'欢迎下次再来\') class Tearch(Die): operat_list = [(\'查看所有课程\', \'select_course\'), (\'查看所教班级\', \'select_grade\'), (\'查看班级中学生\', \'select_grade_stu\'), (\'退出\', \'exit\')] def __init__(self,name): self.name = name def select_course(self): Die.show_select_courese(self.name) def select_grade(self): with open(settings.tearch_grade,\'rb\') as f: obj = pickle.load(f) for x,y in obj.items(): print(\'%s老师交的班级有%s\'%(x,y)) def select_grade_stu(self): with open(settings.student_grade,\'rb\') as f: obj = pickle.load(f) for x,y in obj.items(): print(\'%s号班级里一共有%s位学生\'%(y,x)) def start(): ret = auth.login() if ret[\'identify\']: cls = getattr(sys.modules[__name__],ret[\'identify\']) obj = cls(ret[\'user\']) while True: for index,i in enumerate(cls.operat_list,1): print(index,i[0]) ind = int(input(\'please num\')) print(\'----------------\') func = cls.operat_list[ind-1][1] getattr(obj,func)() print(\'----------------\')
db下的文件
courseinfo ##课程名字数据文件 gradeinfo ##班级号数据文件 select_course ##选课数据文件 student_grade ##学生所在班级数据文件 tearch_grade ##老师所在班级数据文件 userinfo ##存放用户密码和身份的数据文件 admin|4297f44b13955235245b2497399d7a93|Manager
log暂时没放