python学生教务管理系统

基本架构
#----------------------python学生信息管理统---------------------#
需求设计：
1.添加学生的成绩信息
2.学生信息保存在文件夹中
3.修改及删除学生信息
4.查询学生的信息
5.根据学生的成绩进行排名
6.计算总成绩进行排列
基本系统设定
模块一：
学生成绩维护部分
1.录入学生信息
2.删除学生信息
3.修改学生信息
模块二：
查询/统计模块
1.按姓名查找
2.按学号查找
3查询显示所有学生的信息
4.统计学生总人数
模块三：
排序：
1。每门程序排列
2.综合成绩排列
内置模块 :re 、os

需要导入函数

import os
import re

界面模块

def menu():
print( " |-----------------------------学生信息管理系统-----------------------------|\n",
“| |\n”,
“| 1.学生信息录入 |\n”,
“| 2.学生信息修改 |\n”,
“| 3.学生信息查询 |\n”,
“| 4.学生信息删除 |\n”,
“| 5.排序 |\n”,
“| 6.统计总人数 |\n”,
“| 7. 显示所有学生的信息 |\n”,
“| 0.系统退出 |\n”,
“|--------------------------------------------------------------------------|\n”
" |-----------------------------说明：通过数字或上下方向键选择菜单-----------|")`

主程序部分 `

在这里插入代码片def main():exit = True    #标记是否退出while(exit):menu()   #显示菜单option = input("请选择：") #选择序号进行option_str = re.sub("\D","",option)#提取数字if option_str in ['0','1','2','3','4','5','6','7',]:option_int = int(option_str)if option_int == 0:print("你已退出该系统")exit = Falseelif option_int == 1:insert()elif option_int == 2:modify()elif option_int == 3:seach()elif option_int == 4:deleter()'''elif option_int == 5:sort()'''''elif option_int == 6:total()elif option_int == 7:show(）`## 学生信息加入def insert():studentlist = []mark = Truewhile mark:id = input("请输入你的id（如1001）：")if not id:breakname = input("请输入你的名字：")if not name:breakage = input("请输入你的年龄：")if not age:breaktry:chinese_score = int(input("请输入你的语文成绩"))math_score = int(input("请输入你的数学成绩"))english_score = int(input("请输入你的英语成绩"))except:print("输入无效不是整型")continuestudent_dict = {"id":id,"name":name,"age":age,"chinese_score":chinese_score,"math_score":math_score,"english_score":english_score}studentlist.append(student_dict)inputmark = input("是否继续添加（Y/n）：")if inputmark == "Y":mark = Trueif inputmark == "n":mark = Falsesave(studentlist)print("学生信息录入完毕")## 修改学生信息 ```
def modify():show()if os.path.exists("student_systeminfo.txt"):with open("student_systeminfo.txt",'r') as rfile:student_old = rfile.readlines()else:returnstudentid = input("请输入你要修改的学生id：")with open("student_systeminfo.txt","w") as wfile:for student in student_old:d = dict(eval(student))if d["id"] == studentid:print("已找到该名学生，是否进行修改")while True:try:d["name"] = input("请输入姓名")d["chinese_score"] = int(input("请输入你的语文成绩"))d["math_score"] = int(input("请输入你的数学成绩"))d["english_score"] = int(input("请输入你的英语成绩"))except:print("您输入的有误，请重新输入")else:breakstudent = str(d)wfile.write(student+"\n")print("修改成功")else:wfile.write(student)mark = input("是否还需要修改其他学生的信息")if mark == "y":modify()## 学生信息查找def seach():mark = Truestudent_query = []while mark:id = ""name = ""if os.path.exists("student_systeminfo.txt"):mode = input("按id查找输入1，按姓名查找输入2：")if mode == "1":id = input("请输入学生的id：")elif mode == "2":name = input("请输入学生姓名：")else:print("输入错误")seach()with open("student_systeminfo.txt","r") as file:student = file.readline()for list in student:d = dict(eval(list))if id is not "":if d [id] == id:student_query.append(d)elif name is not "":if d[name] == name:student_query.append(d)show_student(student_query)student_query.clear()inputMark = input("是否继续查询（x/y）")if inputMark == "y":mark = Trueelse:mark = Falseelse:print("暂时未保存信息。。。")return## 学生包含信息显示
def show_student(studentlist):if not studentlist:print("无信息")returnformat_title = "{:^6}{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^10}"print(format_title.format("id","名字","chinese_score","语文成绩","math_score","数学成绩","english_score","英语成绩"))format_data = "{:^6}{:^12}\t{:^12}\t{:^12}\t{:^12}\t{:^12}"for info in studentlist:print(format_data.format(info.get("id")))info.get("name"),str(info.get("chinese_score")),str(info.get("math_score")),str(info.get("english_score"))str(info.get("chinese_score")+ info.get("math_score")+info.get("english_score").center(12))def show():student_new = []if os.path.exists("student_systeminfo.txt"):with open("student_systeminfo.txt","r") as rfile:student_old = rfile.readline()for list in  student_old:student_new.append(eval(list))if student_new:show_student(student_new)else:print("暂未保存数据信息")## 学生信息删除```def deleter():mark = Truewhile mark:student_id = input("请输入你要删除的学生id去的")if student_id is not '':if os.path.exists("student_systeminfo.txt"):#判断文件是否存在with open("student_systeminfo.txt","r") as rfile:student_old = rfile.readline()else:student_old = []ifdel = Falseif student_old:with open("student_systeminfo.txt","w") as wfile:d = {}for list in student_old:d = dict(eval(list))if d['id'] != student_id:wfile.write(str(d)+'\d')else:ifdel = Trueif ifdel:print("id为%s的学生已被删除"%student_id)else:print("没有找到id为%s的信息"%student_id)else:print("无信息。。。")breakshow()inputMark = input("是否要继续删除？【y/n】：")if inputMark == "y":mark = Trueelse:mark = False## 学生信息排序模块
def sort（）## 成绩总和计算
def total():if os.path.exists("student_systeminfo.txt"):with open("student_systeminfo.txt","r") as  rfile:student_old = rfile.readline()if student_old:print("一共有%d个学生"%len(student_old))else:print("没有录入学生信息")else:print("暂未保存数据信息")## 学生信息运行模块
if __name__=="__main__":main()## `源码`
#-*- codeing = utf-8 -*-
#@Time:2021/3/6 22:53
#@Author：publishment ghost
#@File：studentssystem.py
#@Software:PyCharm
#内置模块
import re #re模块为正则表达式
import os #os模块为提供多接口模式
#菜单模块
def menu():print( " |-----------------------------学生信息管理系统-----------------------------|\n","|                                                                          |\n","|                            1.学生信息录入                                |\n","|                            2.学生信息修改                                |\n","|                            3.学生信息查询                                |\n","|                            4.学生信息删除                                |\n","|                            5.排序                                        |\n","|                            6.统计总人数                                  |\n","|                            7. 显示所有学生的信息                         |\n","|                            0.系统退出                                    |\n","|--------------------------------------------------------------------------|\n"" |-----------------------------说明：通过数字或上下方向键选择菜单-----------|")
#主程序部分
def main():exit = True    #标记是否退出while(exit):menu()   #显示菜单option = input("请选择：") #选择序号进行option_str = re.sub("\D","",option)#提取数字if option_str in ['0','1','2','3','4','5','6','7',]:option_int = int(option_str)if option_int == 0:print("你已退出该系统")exit = Falseelif option_int == 1:insert()elif option_int == 2:modify()elif option_int == 3:seach()elif option_int == 4:deleter()'''elif option_int == 5:sort()'''''elif option_int == 6:total()elif option_int == 7:show()
def save(student):try:student_txt = open("student_systeminfo.txt","a")except Exception as e:student_txt = open("student_systeminfo.txt","w")for info in student:student_txt.write(str(info)+"\n")student_txt.close()
def insert():studentlist = []mark = Truewhile mark:id = input("请输入你的id（如1001）：")if not id:breakname = input("请输入你的名字：")if not name:breakage = input("请输入你的年龄：")if not age:breaktry:chinese_score = int(input("请输入你的语文成绩"))math_score = int(input("请输入你的数学成绩"))english_score = int(input("请输入你的英语成绩"))except:print("输入无效不是整型")continuestudent_dict = {"id":id,"name":name,"age":age,"chinese_score":chinese_score,"math_score":math_score,"english_score":english_score}studentlist.append(student_dict)inputmark = input("是否继续添加（Y/n）：")if inputmark == "Y":mark = Trueif inputmark == "n":mark = Falsesave(studentlist)print("学生信息录入完毕")def modify():show()if os.path.exists("student_systeminfo.txt"):with open("student_systeminfo.txt",'r') as rfile:student_old = rfile.readlines()else:returnstudentid = input("请输入你要修改的学生id：")with open("student_systeminfo.txt","w") as wfile:for student in student_old:d = dict(eval(student))if d["id"] == studentid:print("已找到该名学生，是否进行修改")while True:try:d["name"] = input("请输入姓名")d["chinese_score"] = int(input("请输入你的语文成绩"))d["math_score"] = int(input("请输入你的数学成绩"))d["english_score"] = int(input("请输入你的英语成绩"))except:print("您输入的有误，请重新输入")else:breakstudent = str(d)wfile.write(student+"\n")print("修改成功")else:wfile.write(student)mark = input("是否还需要修改其他学生的信息")if mark == "y":modify()
def seach():mark = Truestudent_query = []while mark:id = ""name = ""if os.path.exists("student_systeminfo.txt"):mode = input("按id查找输入1，按姓名查找输入2：")if mode == "1":id = input("请输入学生的id：")elif mode == "2":name = input("请输入学生姓名：")else:print("输入错误")seach()with open("student_systeminfo.txt","r") as file:student = file.readline()for list in student:d = dict(eval(list))if id is not "":if d [id] == id:student_query.append(d)elif name is not "":if d[name] == name:student_query.append(d)show_student(student_query)student_query.clear()inputMark = input("是否继续查询（x/y）")if inputMark == "y":mark = Trueelse:mark = Falseelse:print("暂时未保存信息。。。")return
def show_student(studentlist):if not studentlist:print("无信息")returnformat_title = "{:^6}{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^10}"print(format_title.format("id","名字","chinese_score","语文成绩","math_score","数学成绩","english_score","英语成绩"))format_data = "{:^6}{:^12}\t{:^12}\t{:^12}\t{:^12}\t{:^12}"for info in studentlist:print(format_data.format(info.get("id")))info.get("name"),str(info.get("chinese_score")),str(info.get("math_score")),str(info.get("english_score"))str(info.get("chinese_score")+ info.get("math_score")+info.get("english_score").center(12))
def deleter():mark = Truewhile mark:student_id = input("请输入你要删除的学生id去的")if student_id is not '':if os.path.exists("student_systeminfo.txt"):#判断文件是否存在with open("student_systeminfo.txt","r") as rfile:student_old = rfile.readline()else:student_old = []ifdel = Falseif student_old:with open("student_systeminfo.txt","w") as wfile:d = {}for list in student_old:d = dict(eval(list))if d['id'] != student_id:wfile.write(str(d)+'\d')else:ifdel = Trueif ifdel:print("id为%s的学生已被删除"%student_id)else:print("没有找到id为%s的信息"%student_id)else:print("无信息。。。")breakshow()inputMark = input("是否要继续删除？【y/n】：")if inputMark == "y":mark = Trueelse:mark = False
#def sort():def total():if os.path.exists("student_systeminfo.txt"):with open("student_systeminfo.txt","r") as  rfile:student_old = rfile.readline()if student_old:print("一共有%d个学生"%len(student_old))else:print("没有录入学生信息")else:print("暂未保存数据信息")def show():student_new = []if os.path.exists("student_systeminfo.txt"):with open("student_systeminfo.txt","r") as rfile:student_old = rfile.readline()for list in  student_old:student_new.append(eval(list))if student_new:show_student(student_new)else:print("暂未保存数据信息")
if __name__=="__main__":main()运行程序![在这里插入图片描述](https://img-blog.csdnimg.cn/20210317154701276.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NqanNrc2hz,size_16,color_FFFFFF,t_70)