python作业之选课系统
题目要求：
一、需求分析
利用规范化目录完成一个学生选课系统
角色：学生/管理员/讲师
对象：课程/校区
功能分析：
用户登陆之后就可以直接判断用户身份（是学生还是管理员）
学生登陆之后有以下几个功能：
1.察看所有课程
2.选择课程
3.查看所选课程
管理员登陆之后有以下几个功能：
1.创建课程
2.创建学生账号
3.察看所有课程
4.察看所有学生
5.察看所有学生的选课情况
讲师登陆之后有以下几个功能:
1.查看课程
2.选择课程
3.查看学生
4.修改学生分数
必须包含的属性如下
课程属性：价格、周期
校区属性：滨海、河西、小黑屋
管理员属性：ID、用户名、密码、课程列表、校区、分数
讲师属性：ID、用户名、密码、课程列表
学员： ID、用户名、密码
二、代码
课程信息（class_information）
import json
import pickle
class Role:
def __init__(self, usr_name, number, password=None):
self.usr_name = usr_name
self.number = number
self.password = password
class Administrator(Role):
def __init__(self, usr_name, number, password):
Role.__init__(self, usr_name, number, password)
self.school_lst = []
pass
class Student(Role):
def __init__(self, usr_name, number, password, school):
Role.__init__(self, usr_name, number, password)
self.school = school
self.subject_lst = [] # subject_lst: list[obj]
self.score_dic = {
} # score_dic: dict{subject_name: score}
def choose_subject(self, subject_name: str):
self.subject_lst.append(obj_information_lst[4][subject_name].name)
obj_information_lst[4][subject_name].student_lst.append(self.usr_name)
self.score_dic[subject_name] = 60
def check_score(self):
for key, value in self.score_dic.items():
print(key, value)
class Teacher(Role):
def __init__(self, usr_name, number, password):
Role.__init__(self, usr_name, number, password)
self.subject_lst = [] # subject_lst: list[obj]
def choose_subject(self, subject_name: str):
self.subject_lst.append(obj_information_lst[4][subject_name].name)
obj_information_lst[4][subject_name].teacher = self.usr_name
def check_my_subject(self):
print(self.subject_lst)
class School:
def __init__(self, name):
self.name = name
self.subject_lst = [] # subject_lst: list[str]
class Subject:
def __init__(self, name, price, cycle,
school: object):
self.name = name
self.teacher = None # teacher: str
self.information = [name, price, cycle, school.name, self.teacher]
self.school = school
self.school.subject_lst.append(self.name)
self.student_lst = [] # student_lst: list[str]
def create_a_school():
name_str = input('请输入学区名称：')
name = School(name_str)
obj_information_lst[3][name_str] = name
save_obj_information()
print('学区创建完毕')
def create_a_teacher():
usr_name_str = input('请输入教师姓名：') # usr_name: str
number = input('请输入教师id：')
password = input('请输入密码：')
usr_name = Teacher(usr_name_str, number, password) # usr_name: obj
obj_information_lst[1][usr_name_str] = usr_name
usr_password_data_lst[1][number] = password
save_obj_information()
save_usr_password()
print('教师创建完毕')
def create_a_subject():
name_str = input('请输入课程名称：') # name: str
price = input('请输入课程价格：')
cycle = input('请输入课程周期：')
school = choose_school()
name = Subject(name_str, price, cycle, school)
obj_information_lst[4][name_str] = name
save_obj_information()
print('课程创建完毕')
def check_all_subject():
for school_name, school_obj in obj_information_lst[3].items():
print(school_name, school_obj.subject_lst)
def further_check(usr_name):
choice = input('1.further check\n2.choose subject\n3.end\n')
if choice == '1':
subject_name = input('subject name')
print(obj_information_lst[4][subject_name].information)
further_check(usr_name)
elif choice == '2':
subject_name = input('subject name')
usr_name.choose_subject(subject_name)
print('选课成功')
further_check(usr_name)
elif choice == '3':
pass
else:
further_check(usr_name)
def choose_school():
print(obj_information_lst[3].keys())
school_str = input('请输入校区')
school = obj_information_lst[3][school_str]
return school
admin_usr_password_dic = {
}
teacher_usr_password_dic = {
}
student_usr_password_dic = {
}
admin_dic = {
}
teacher_dic = {
}
student_dic = {
}
school_dic = {
}
subject_dic = {
}
usr_password_data_lst = [admin_usr_password_dic, teacher_usr_password_dic,
student_usr_password_dic]
obj_information_lst = [admin_dic, teacher_dic, student_dic, school_dic, subject_dic]
def save_usr_password():
with open('UserData.json', 'w', encoding='utf-8') as fp:
json.dump(usr_password_data_lst, fp)
fp.close()
def save_obj_information():
with open('UserData.pkl', 'wb') as fp:
pickle.dump(obj_information_lst, fp)
fp.close()
学生
import class_information
def stu_register():
usr_name_str = input('请输入用户名：')
number = input('请输入id：')
password = input('请输入密码：')
school = class_information.choose_school()
usr_name = class_information.Student(usr_name=usr_name_str, number=number,
password=password, school=school)
class_information.obj_information_lst[2][usr_name_str] = usr_name
class_information.usr_password_data_lst[2][number] = password
print('over')
def student_inter(usr_name):
print('1.choose_subject\n2.check_score\n3.log out')
tem = input('make a choice:')
if tem == '1':
print(usr_name.school.subject_lst)
class_information.further_check(usr_name)
student_inter(usr_name)
elif tem == '2':
usr_name.check_score()
student_inter(usr_name)
elif tem == '3':
print('log out successfully')
pass
else:
print('请在目录里面选择')
student_inter(usr_name)
管理员
import class_information
def admin_register():
usr_name_str = input('请输入用户名：')
number = input('请输入id：')
password = input('请输入密码：')
usr_name = class_information.Administrator(usr_name=usr_name_str,
number=number, password=password)
class_information.usr_password_data_lst[0][number] = password
class_information.obj_information_lst[0][usr_name_str] = usr_name
print('over')
def admin_inter(usr_name: object):
print('1.create a school\n2.create a teacher\n3.create a subject\n4.log out')
tem = input('make a choice')
if tem == '1':
class_information.create_a_school()
admin_inter(usr_name)
elif tem == '2':
class_information.create_a_teacher()
admin_inter(usr_name)
elif tem == '3':
class_information.create_a_subject()
admin_inter(usr_name)
elif tem == '4':
print('log out successfully')
pass
else:
print('请在目录里面选择')
admin_inter(usr_name)
讲师
import class_information
def weather_further_check():
while True:
choise = input('whether further_check(1.yes/2.no)\nneed a int')
def teacher_inter(usr_name):
print('1.choose_subject\n2.check_my_subject\n'
'3.check_student or set_score\n4.log out')
tem = input('make a choise:')
if tem == '1':
class_information.check_all_subject()
class_information.further_check(usr_name)
class_information.save_obj_information()
teacher_inter(usr_name)
elif tem == '2':
usr_name.check_my_subject()
teacher_inter(usr_name)
elif tem == '3':
subject_name = input('subject_name')
subject = class_information.obj_information_lst[4][subject_name]
print(subject.student_lst)
student_str = input('student_name')
student = class_information.obj_information_lst[2][student_str]
print('score = ', student.score_dic[subject_name])
choise = input('1.set score\n2.end')
if choise == '1':
score = input('set a score\n')
student.score_dic[subject_name] = score
class_information.save_obj_information()
elif choise == '2':
pass
teacher_inter(usr_name)
elif tem == '4':
print('log out successfully')
pass
else:
print('请在目录里面选择')
teacher_inter(usr_name)
教务系统
import pickle
import json
import class_information
import admin_inter
import student_inter
import teacher_inter
def weather_initial():
choice = input()
if choice == 'initial':
initial()
else:
pass
load_information()
def initial():
with open('UserData.pkl', 'wb') as fp:
pickle.dump(class_information.obj_information_lst, fp)
fp.close()
with open('UserData.json', 'w', encoding='utf-8') as fp:
json.dump(class_information.usr_password_data_lst, fp)
fp.close()
def load_information():
with open('UserData.pkl', 'rb') as fp:
class_information.obj_information_lst = pickle.load(fp)
fp.close()
with open('UserData.json', 'r', encoding='utf-8') as fp: #
class_information.usr_password_data_lst = json.load(fp)
fp.close()
choose_status()
def choose_status():
print('''
------------>总菜单<------------
1.管理员登录
2.讲师登录
3.学生登录
4.退出
--------------------------------------
''')
status = input('请选择身份：\n')
if status == '1':
log_or_register(status)
elif status == '2':
log_in(status)
elif status == '3':
log_or_register(status)
elif status == '4':
pass
else:
print('请在目录里面选择')
choose_status()
def log_or_register(status):
choice = input("目录\n1.注册\n2.登录\n请输入你的选择:\n")
if choice == '1':
register(status)
elif choice == '2':
log_in(status)
else:
print('请在目录里面选择')
log_or_register(status)
def register(status):
if status == '1':
admin_inter.admin_register()
else:
student_inter.stu_register()
class_information.save_usr_password()
class_information.save_obj_information()
choose_status()
def log_in(status):
if status == '1':
tem = 0
elif status == '2':
tem = 1
else:
tem = 2
usr_name = input('请输入用户名：')
number = input('请输入id：')
password = input('请输入密码：')
if number in class_information.usr_password_data_lst[tem]:
if password == class_information.usr_password_data_lst[tem][number]:
print('log in successfully')
enter(status, class_information.obj_information_lst[tem][usr_name])
else:
print('password is not match id')
log_in(status)
else:
print('no usr')
log_in(status)
def enter(status, usr: object):
if status == '1':
admin_inter.admin_inter(usr)
elif status == '2':
teacher_inter.teacher_inter(usr)
elif status == '3':
student_inter.student_inter(usr)
class_information.save_usr_password()
class_information.save_obj_information()
choose_status()
pass
def main():
weather_initial()
if __name__ == '__main__':
main()
总结
好好学习 又是快乐的一年。