import sys
import pickle
import os
USERINFO = r'C:Users12078PycharmProjectsOldBoy选课系统userinfo'
STUINFO = r'C:Users12078PycharmProjectsOldBoy选课系统stuinfo'
COURSEINFO=r'C:Users12078PycharmProjectsOldBoy选课系统courinfo'
COURSE_LIST=r'C:Users12078PycharmProjectsOldBoy选课系统courinfo_list'
STU_COURSEINFO=r'C:Users12078PycharmProjectsOldBoy选课系统stu_courinfo'
class Course(object):
def __init__(self,name,price,period):
self.name = name
self.price = price
self.period = period
class Student(object):
opt_lst = [('查看课程', 'show_courses'),('选择课程','choose_course'),
('查看已选课程', 'show_selected'), ('退出', 'exit')]
def __init__(self,name):
self.name = name
self.courses = []
def show_courses(self):
with open(COURSE_LIST, mode='r', encoding='utf-8') as f:
for line in f:
print(line.strip())
def choose_course(self):
# pass # 设计一个数据结构，将student和 course同时存进去
courses=[]
with open(COURSE_LIST, mode='r', encoding='utf-8') as f:
for line in f:
courses.append(line.strip())
for index,c in enumerate(courses,1):
print(index,c)
num=int(input("请选择要选择的课程序号： "))
dic={}
flag=True
if os.path.getsize(STU_COURSEINFO) > 0:
with open(STU_COURSEINFO, mode='rb') as f:
while True:
try:
dic = pickle.load(f)
if self.name in dic:
self.courses=dic[self.name]
else:
self.courses=[]
if courses[num - 1] in self.courses:
print("该课程已经选择过了，请选择其他课程！")
flag=False
else:
self.courses.append(courses[num - 1])
dic[self.name] = self.courses
except EOFError:
break
else:
print("here")
self.courses=[]
self.courses.append(courses[num - 1])
dic[self.name] = self.courses
if flag:
with open(STU_COURSEINFO, mode='wb') as f: # 覆盖
pickle.dump(dic, f) # 将实例化对象 pickle进文件
print('%s课程创建成功' % courses[num-1])
def show_selected(self):
with open(STU_COURSEINFO, mode='rb') as f:
while True:
try:
dic = pickle.load(f)
if self.name in dic:
print(dic[self.name])
break
except EOFError:
print("没有此学生的选课信息")
break
def exit(self):
sys.exit()
@staticmethod
def init(ret):
with open(STUINFO,'rb') as f:
while True:
try:
obj = pickle.load(f)
if obj.name == ret[0]:
return obj
except EOFError:print('没有这个学生,出现了不可思议的错误!')
class Manager(object):
opt_lst = [('创建课程','create_course'),('创建学生','create_student'),
('查看课程','show_courses'),('查看学生','show_students'),
('查看学生和已选课程','show_stu_course'),('退出','exit')]
def __init__(self,name):
self.name = name
# 创建的课程对象直接pickle进到文件里。
def create_course(self):
cname = input("请输入课程的名字： ")
cprice = input("请输入课程的价格： ")
cperiod = input("请输入课程的周期： ")
course = Course(cname, cprice, cperiod)
with open(COURSE_LIST, mode='a', encoding='utf-8') as f:
f.write('%s
' % (cname)) # 给定默认密码和身份 身份要和类重名方便使用反射
with open(COURSEINFO, mode='ab') as f:
pickle.dump(course, f) # 将实例化对象 pickle进文件
print('%s课程创建成功' % course.name)
# 创建的学生对象直接pickle进到文件里，将学生的username,password,ident存到单独的文件夹里方便后面遍历。
def create_student(self):
usr = input('username :')
stu = Student(usr)
with open(USERINFO,mode = 'a',encoding='utf-8') as f:
f.write('%s|123456|Student
'%(usr)) # 给定默认密码和身份 身份要和类重名方便使用反射
with open(STUINFO,mode = 'ab') as f:
pickle.dump(stu,f) # 将实例化对象 pickle进文件
print('%s学生创建成功'%stu.name)
def show_courses(self):
with open(COURSE_LIST, mode='r', encoding='utf-8') as f:
for line in f:
print(line.strip())
def show_students(self):
with open(USERINFO, mode='r', encoding='utf-8') as f:
# for line in f:
# print(line.strip())
# 或：
while True:
text_line = f.readline()
if text_line:
print(text_line.strip())
else:
break
def show_stu_course(self):
if os.path.getsize(STU_COURSEINFO) > 0:
with open(STU_COURSEINFO, mode='rb') as f:
while True:
try:
dic = pickle.load(f)
print(dic)
for k,v in dic.items():
c_list=";".join(v)
print('%s选择的课程是%s'%(k,c_list))
except EOFError:
break
else:
print("没有任何学生的选课信息。")
def exit(self):
sys.exit()
@classmethod
def init(cls,ret):
obj = cls(ret[0]) # 实例化一个 Manager对象返回
return obj
# 用户 输入用户名 密码 判断用户是否合法和身份是啥?
def login():
'''
:return: 登录成功:用户名,身份
登录失败:False
'''
username = input('username :')
password = input('password :')
with open(USERINFO,encoding='utf-8') as f:
for line in f:
usr,pwd,ident = line.strip().split('|')
if usr == username and password == pwd:
return usr,ident # 返回的是个元组 如： ('alex', 'Manager')
else:
return False
ret = login()
# print(ret) # ('alex', 'Manager')
if ret:
print('登录成功,%s,欢迎使用选课系统'%ret[0])
if hasattr(sys.modules[__name__],ret[1]):
cls = getattr(sys.modules[__name__],ret[1]) # 第一次使用反射，获取身份
obj = cls.init(ret) # 返回一个 Manager或 Student对象
while True:
for index,opt in enumerate(cls.opt_lst,1):
print(index,opt[0])
num = int(input('您要选择的操作 :').strip())
if hasattr(obj,cls.opt_lst[num-1][1]):
getattr(obj,cls.opt_lst[num-1][1])() # 第二次使用反射，调用各自方法列表里的方法 Manager和Student里都有一个 opt_lst
else:
print('登录失败')