1. Realization effect (video demonstration)
Score management system
2. Brief description of the code
1. **Student and Teacher Classes**: The code defines two classes, `Student` (student) and `Teacher` (teacher), representing the roles of students and teachers respectively.
2. **Login function**: The `login` function is used for user authentication. It reads user information from a file (`users.txt`) and checks the provided credentials. If the login is successful, an instance of the appropriate class (student or teacher) will be created and allow access to the corresponding menu.
3. **Teacher Class**: The `Teacher` class provides the function of managing student performance. Teachers can perform the following operations: - Record student scores - Query student scores - Delete student scores - Modify student scores - Sort student scores according to different criteria - Count student scores
4. **Student class**: The `Student` class provides students with the function of viewing and modifying their own information (such as grades and personal information).
5. **Menu**: Both the `Teacher` and `Student` classes have a `menu` method, which displays a menu of options that the user can select.
3. Detailed code
MS.py (main program entry)
##调用student和teacher
##登陆，根据用户属性进入学生菜单、教师菜单
from student import Student
from teacher import Teacher
def login():
id_name = input("请输入你的账号:")
passwd = input("请输入你的密码：")
##验证用户名的密码，假设账号和密码已经存在
with open('users.txt', 'r') as file:
lines = file.readlines()
# print(lines)
# Lines的类型:列表
# for line in lines:
# tmp = line.split(',')
##验证用户名和密码是否正确，如果正确，再判断用户类型，生成相应的类实例
for each_line in lines:
temp = each_line.split(',')
if id_name == temp[1]:
if passwd != temp[2]:
print("密码不正确，请再次输入")
else:
if temp[3].strip() == '1':
Teacher(temp[1].strip())
else:
stu1 = Student(int(temp[0].strip()))
print(stu1.info)
else:
print("用户名不存在，请重新输入")
# info = lines[3].split(',')
# print(info)
if __name__ == '__main__':
login()
# from student import Student
# stu1 =Student('1002')
# print(stu1.info)
# print(stu1.search_class_info('math'))
####生成实例的写法不同
# import teather
#
# wang = teather.Teacher("Wang")
# print(wang.students) ##调用类的函数
stu_info.txt
{1001: {'id': 1001, 'name': 'aaa', 'math': 98, 'Python': 89, 'pe': 76, 'sum': 263}, 1002: {'id': 1002, 'name': 'bbb', 'math': 58, 'Python': 67, 'pe': 86, 'sum': 211}, 1003: {'id': 1003, 'name': 'ccc', 'math': 38, 'Python': 26, 'pe': 16, 'sum': 80}}student.py
# 定义类
class Student:
info = {}
def __init__(self, sID):
print("welcome ", " ", sID)
# show info
with open('stu_info.txt', 'r') as file:
line = file.readline()
stu_s = eval(line)
self.info = stu_s[sID]
self.menu()
def menu(self):
# 类内部的函数
while True:
print("==========LOGIN MENU==========")
print(" 1 查询自己的成绩")
print(" 2 查询自己的信息")
print(" 3 修改自己的信息")
print(" 0 退出系统")
print("==============================")
print(" 说明：通过输入相应数字选择菜单功能")
print("==============================")
# 用户输入选择的菜单项，判断需要进入的功能
option = eval(input("请输入您的选择项："))
if option == 0:
exit()
elif option == 1:
print("1 查询自己的成绩")
self.search_score()
elif option == 2:
print("2 查询自己的信息")
self.search_info()
elif option == 3:
print("3 修改自己的信息")
self.change_info()
else:
print("选择错误，请重新输入")
def search_score(self):
for i in self.info:
print(f'{i}:{self.info[i]}')
def search_info(self):
global info_1
info = []
for line in open('users.txt', 'r'):
line = line.replace('\n', '')
line = line.split(',')
info.append(line)
for i in info:
if i[0] == str(self.info["id"]):
info_1 = i
print(f'学号:{i[0]} 账号:{i[1]} 密码:{i[2]}')
break
return info_1
def change_info(self):
a = []
a = self.search_info()
while True:
changed_info = int(input("1.账号2.密码：")) # 学生只能修改账号和密码
for i in range(1, 3):
if i == changed_info:
inform = input("输入你要修改的值：")
a[changed_info] = inform
print(a)
flag = input("是否要继续修改y/n")
if flag != 'y':
break
def search_class_info(self, class_name):
print(class_name + ":" + str(self.info[class_name]))
return self.info[class_name]
# st1 = Student("1001")
# st1.search_class_info("math")
if __name__ == "__main__":
sID = Student(int(input("请输入学号:")))teacher.py
class Teacher:
students = {}
def __init__(self, name):
print("welcome " + name)
self.menu()
def menu(self):
self.load_info()
while True:
print("==========LOGIN MENU==========")
print(" 1 录入学生成绩")
print(" 2 查找学生成绩")
print(" 3 删除学生成绩")
print(" 4 修改学生成绩")
print(" 5 成绩排序")
print(" 6 统计成绩")
print(" 7 显示所有学生成绩")
print(" 0 退出系统")
print("==============================")
print(" 说明：通过输入相应数字选择菜单功能")
print("==============================")
option = eval(input("请输入您的选择项： "))
if option == 0:
exit()
elif option == 1:
print("1 录入学生成绩")
self.input_info(self.students)
# self.load_info()
for key, val in self.students.items():
print(key, ":", val)
elif option == 2:
print("2 查找学生成绩")
self.search_info()
elif option == 3:
print("3 删除学生成绩")
self.del_info()
elif option == 4:
print("4 修改学生成绩")
self.change_info()
elif option == 5:
print("5 成绩排序")
self.sort_info()
elif option == 6:
print("6 统计成绩")
self.count_info()
elif option == 7:
print("7 显示所有学生成绩")
self.show_info()
def load_info(self):
stu = {"id": 1001, "name": "aaa", "math": 98,
"Python": 89, "pe": 76, "sum": 98 + 89 + 76}
self.students[1001] = stu
stu = {"id": 1002, "name": "bbb", "math": 58,
"Python": 67, "pe": 86, "sum": 58 + 67 + 86}
self.students[1002] = stu
stu = {"id": 1003, "name": "ccc", "math": 38,
"Python": 26, "pe": 16, "sum": 38 + 26 + 16}
self.students[1003] = stu
with open('stu_info.txt', 'w') as file:
file.write(str(self.students))
def input_info(self, students):
# students = {}
flag_1 = 0
while True:
info_list = []
stud_id = int(input("请输入学号"))
if not stud_id:
break
for key in students:
if stud_id == students[key]["id"]:
print("学号重复,录入失败")
flag_1 = 1
break
if flag_1 == 1:
break
else:
name = input("请输入名字：")
math = int(input("请输入数学成绩："))
python = int(input("请输入python成绩："))
pe = int(input("请输入体育成绩："))
stu = {"stu_id": stud_id, "name": name, "math": math, "python": python, "pe": pe}
self.students[stud_id] = stu
print("添加成功")
flag_2 = input("是否继续添加（y/n）:")
if flag_2 != 'y':
break
with open('stu_info.txt', 'w') as file:
file.write(str(self.students))
def search_info(self):
while True:
search = int(input("按id查输入1；按姓名查输入2："))
if search == 1:
stu_id = int(input("请输入学生学号 ： "))
print("学号 姓名 数学成绩 Python成绩 体育成绩 总成绩")
print(self.students[stu_id]["id"], " ", self.students[stu_id]["name"], " ",
self.students[stu_id]["math"], " ", self.students[stu_id]["Python"], " ",
self.students[stu_id]["pe"], " ", self.students[stu_id]["sum"])
else:
name = input("请输入学生姓名 ： ")
for key, val in self.students.items():
if val['name'] == name:
print("学号 姓名 数学成绩 Python成绩 体育成绩 总成绩")
print(self.students[name]["id"], " ", self.students[name]["name"], " ",
self.students[name]["math"], " ", self.students[name]["Python"], " ",
self.students[name]["pe"], " ", self.students[name]["sum"])
flag = input("是否继续查询（y/n）：")
if flag != 'y':
break
def del_info(self):
while True:
del_id = int(input("请输入要删除的学生ID："))
if del_id in self.students:
del self.students[del_id]
print("该学生已经删除")
print("学号 姓名 数学成绩 Python成绩 体育成绩 总成绩")
for remain_id in self.students:
print(self.students[remain_id]["id"], " ", self.students[remain_id]["name"], " ",
self.students[remain_id]["math"], " ", self.students[remain_id]["Python"], " ",
self.students[remain_id]["pe"], " ", self.students[remain_id]["sum"])
else:
print("输入错误")
if self.students == {}:
print("无任何数据信息")
flag = input("是否继续删除（y/n）：")
if flag != 'y':
break
def change_info(self):
while True:
change_id = int(input("请输入要修改的学生ID："))
if change_id in self.students:
name = (input("请输入名字 ： "))
math = int(input("请输入数学成绩 ： "))
python = int(input("请输入Python成绩 ： "))
pe = int(input("请输入体育成绩 ： "))
sum = math + python + pe
stu = {"id": change_id, "name": name, "math": math, "Python": python, "pe": pe,
"sum": sum}
self.students[change_id] = stu
print("修改成功！")
else:
print("未找到学生信息")
flag = input("是否继续修改其他学生信息？（y/n）：")
if flag != 'y':
break
'''def sort_info(self):
while True:
sort_way = int(input("请选择排序方式(1.按数学成绩排序，2.按python成绩排序，3.按体育成绩排序):"))
if sort_way == 1:
print("ID 姓名 数学 python 体育 总成绩")
list1 = []
for i in self.students.values():
list1.append(i['math'])
list1 = sorted(list1)
for i in list1:
for j in self.students.values():
k = j["math"]
if i == k:
for val in j.values():
print(val, end="\t")
print(j['math'] + j['python'] + j['pe'])
elif sort_way == 2:
print("ID 姓名 数学 python 体育 总成绩")
list1 = []
for i in self.students.values():
list1.append(i['python'])
list1 = sorted(list1)
for i in list1:
for j in self.students.values():
k = j["python"]
if i == k:
for val in j.values():
print(val, end="\t")
print(j['math'] + j['python'] + j['pe'])
else:
print("ID 姓名 数学 python 体育 总成绩")
list1 = []
for i in self.students.values():
list1.append(i['pe'])
list1 = sorted(list1)
for i in list1:
for j in self.students.values():
k = j["pe"]
if i == k:
for val in j.values():
print(val, end="\t")
print(j['math'] + j['python'] + j['pe'])''' # 以上代码太长且复杂
def sort_info(self):
# 由于按总成绩排序在最后的show-info中已经排序完成，因此在这不对总成绩进行排序
while True:
flag = 0
sort_way_1 = input("请选择排序方式(math.按数学成绩排序，python.按python成绩排序，PE.按体育成绩排序):")
sort_way_2 = input("请选择排序方式（1.升序，2.降序）")
if sort_way_2 == 1:
if sort_way_1 == 'math' or sort_way_1 == 'python' or sort_way_1 == 'PE':
after_sort = sorted(self.students.items(), key=lambda x: x[1][sort_way_1], reverse=False)
for i in after_sort:
print(f'排序后{i}')
flag = 1
if flag == 0:
print("输入有误,返回上一步")
again = input("是否继续排序(y/n):")
if again != 'y':
break
else:
if sort_way_1 == 'math' or sort_way_1 == 'python' or sort_way_1 == 'PE':
after_sort = sorted(self.students.items(), key=lambda x: x[1][sort_way_1], reverse=True)
for i in after_sort:
print(f'排序后{i}')
flag = 1
if flag == 0:
print("输入有误,返回上一步")
again = input("是否继续排序(y/n):")
if again != 'y':
break
def count_info(self):
global subject
while True:
count = int(input("要查看什么分数的统计（1.数学 2.Python 3.体育）："))
if count == 1:
subject = 'math'
if count == 2:
subject = 'Python'
if count == 3:
subject = 'pe'
num = part1 = part2 = part3 = part4 = part5 = 0
for stu in self.students:
if 90 <= self.students[stu][subject] < 100:
part1 += 1
elif 80 <= self.students[stu][subject] < 90:
part2 += 1
elif 70 <= self.students[stu][subject] < 80:
part3 += 1
elif 60 <= self.students[stu][subject] < 70:
part4 += 1
else:
part5 += 1
num += 1
sub1 = part1 / num * 100
sub2 = part2 / num * 100
sub3 = part3 / num * 100
sub4 = part4 / num * 100
sub5 = part5 / num * 100
print(f"{subject} 的成绩统计如下 ： ")
print(f"一共有 {num} 名学生！")
print(f"90-100分 {part1} 人，占总人数的 {sub1}%")
print(f"80-90分 {part2} 人，占总人数的 {sub2}%")
print(f"70-80分 {part3} 人，占总人数的 {sub3}%")
print(f"60-70分 {part4} 人，占总人数的 {sub4}%")
print(f"60分以下 {part5} 人，占总人数的 {sub5}%")
import matplotlib.pyplot as plt
import numpy as np
y = np.array([sub1, sub2, sub3, sub4, sub5]) # 定义饼图的标签，标签是列表
plt.rcParams['font.sans-serif'] = 'SimHei' # 设置中文显示
plt.figure(figsize=(6, 6)) # 将画布设定为正方形，则绘制的饼图是正圆
plt.pie(y,
labels=['90-100分', '80-90分', '70-80分', '60-70分', '60分以下'], # 设置饼图标签
colors=['red', 'yellow', 'green', 'cyan', 'pink'], # 设置饼图颜色
explode=(0.01, 0.01, 0.01, 0.01, 0.01), # 第二部分突出显示，值越大，距离中心越远
autopct='%.2f%%', # 格式化输出百分比
)
plt.title("成绩分析结果")
plt.show()
# colors = ['red', 'yellow', 'green', 'cyan', 'pink'], # 设置饼图颜色
# explode = [0.01, 0.01, 0.01, 0.01, 0.01, 0.01] # 设定各项距离圆心n个半径
# values = [sub1, sub2, sub3, sub4, sub5]
# plt.pie(values, explode=explode, labels=label, autopct='%1.1f%%') # 绘制饼图
# plt.title('成绩分析结果') # 绘制标题
# plt.savefig('./成绩分析结果') # 保存图片
# plt.show()
flag = input("是否继续统计（y/n）：")
if flag != 'y':
break
def show_info(self):
while True:
# 显示所有成绩并按总分排序
for i in self.students:
count_sum = 0
for j in self.students[i]:
if j == 'math' or j == 'python' or j == 'pe':
count_sum += int(self.students[i][j])
print(f'{self.students[i]} 的总分为{count_sum}')
flag = input("是否要继续查看成绩(y/n):")
if flag != 'y':
break
# st1 = Student("1001")#生成学生的实例
# st1..search_class_info("math")#调用类中的函数
if __name__ == '__main__':
teacher_wang = Teacher("Wang")
users.txt
1001,aaa,aaa123,0
1002,bbb,bbb123,0
1003,ccc,ccc123,0
T001,wang,111,1
T002,li,222,1