Python学生信息管理系统

Python学生信息管理系统

1.需求分析
2.系统设计
3.系统开发必备
4.主函数设计
5.学生信息维护模块设计
6.查询/统计模块设计
7.排序模块设计
8.项目打包

1.需求分析

1.录入学生信息
2.查找学生信息
3.删除学生信息
4.修改学生信息
5.排序
6.统计学生总人数
7.显示所有学生信息
0.退出系统

Python学生信息管理系统_第1张图片

2.开发必备

系统开发环境:
    操作系统:window10
    Python解释器版本:Python3.7
    开发工具:Pycharm
    Python内置模块:os,re
项目目录结构:
    main.py
    menu.py
    operate.py
    save.py
    display.py

3.主函数设计

在主函数中通过调用各个函数实现需求分析内容
1.录入学生信息    insert()
2.查找学生信息    find()
3.删除学生信息    delete()
4.修改学生信息    modify()
5.排序           sort()
6.统计学生总人数   total()
7.显示所有学生信息  show()
0.退出系统

from menu import menu
import operate


def main():
    while 1:
        menu()
        choice = int(input('请输入你需要的功能:'))
        if choice in range(0,8):
            if choice == 0:
                answer = input('你确定要退出系统吗?y/n')
                if answer in ('y','Y'):
                    print('谢谢你的使用')
                    break
                else:
                    continue
            elif choice == 1:
                operate.insert()
            elif choice == 2:
                operate.find()
            elif choice == 3:
                operate.delete()
            elif choice == 4:
                operate.modify()
            elif choice == 5:
                operate.sort()
            elif choice == 6:
                operate.total()
            elif choice == 7:
                operate.show()

if __name__ == '__main__':
    main()

3.1 menu函数设计

def menu():
    print('学生信息管理系统'.center(50,'='))
    print('功能菜单'.center(50,'-'))
    print('\t\t\t\t\t1.录入学生信息')
    print('\t\t\t\t\t2.查找学生信息')
    print('\t\t\t\t\t3.删除学生信息')
    print('\t\t\t\t\t4.修改学生信息')
    print('\t\t\t\t\t5.排序')
    print('\t\t\t\t\t6.统计学生总人数')
    print('\t\t\t\t\t7.显示所有学生信息')
    print('\t\t\t\t\t0.退出系统')
    print('-'.center(50,'-'))

3.2 operate函数设计

# Author : zxy
# Date : 2022/5/21 23:53
import display
import save
import os
def insert(filename):
    student_list = []
    while True:
        id = input('请输入ID(如1001):')
        if not id:
            break
        name = input('请输入姓名:')
        if not name:
            break
        try:
            english = int(input('请输入英语成绩:'))
            python = int(input('请输入Python成绩:'))
            java = int(input('请输入Java成绩:'))
        except:
            print('输入有误!!请重新输入!!')
            continue
        # 将信息报错在字典中
        student = {'id':id,'name':name,'english':english,'python':python,'java':java}
        student_list.append(student)
        answer = input('是否继续添加?y/n\n')
        if answer in ('y','Y'):
            continue
        else:
            break
    save.save(student_list,filename)

def find(filename):
    student_lst = []
    while True:
        id = ''
        name = ''
        if os.path.exists(filename):
            mode = int(input('按ID查找请输入1,按姓名查找请输入2:'))
            if mode == 1:
                id = input('请输入学生ID:')
            elif mode == 2:
                name = input('请输入学生姓名:')
            else:
                print('你输入有误,请重新输入!!!')
                find(filename)
            with open(filename,'r',encoding='utf-8') as rfile:
                students = rfile.readlines()
                for student in students:
                    dic = dict(eval(student))
                    if id != '':
                        if dic['id'] == id:
                            student_lst.append(dic)
                    elif name != '':
                        if dic['name'] == name:
                            student_lst.append(dic)
            display.show_student(student_lst)
            student_lst.clear()
            answer = input('是否继续查询?y/n')
            if answer in ('y','Y'):
                continue
            else:
                break
        else:
            print('没有学生信息!!!')


def delete(filename):
    while True:
        student_id = input('请输入要删除的学生的ID:')
        if student_id != '':
            if os.path.exists(filename):
                with open(filename,'r',encoding='utf-8') as rfile:
                    student_old = rfile.readlines()
            else:
                student_old = []
            flag = False
            if student_old:
                with open(filename,'w',encoding='utf-8') as wfile:
                    dic = {}
                    for item in student_old:
                        dic = dict(eval(item))
                        if dic['id'] != student_id:
                            wfile.write(str(dic)+'\n')
                        else:
                            flag = True
                    if flag:
                        print('id为{}的学生信息已被删除'.format(student_id))
                    else:
                        print(f'没有找到ID为{student_id}的学生信息')
            else:
                print('没有学生信息')
                break
            show(filename)
            answer = input('是否继续删除?y/n' + '\n')
            if answer in ('y','Y'):
                continue
            else:
                break



def modify(filename):
    while True:
        answer = input('请输入要修改的学生ID:')
        if answer != '':
            if os.path.exists(filename) :
                with open(filename,'r',encoding='utf-8') as rfile:
                    student_old = rfile.readlines()
            else:
                student_old = []

            flag = False
            if student_old:
                with open(filename,'w',encoding='utf-8') as wfile:
                    dic = {}
                    for student in student_old:
                        dic = dict(eval(student))
                        if dic['id'] == answer:
                            print('找到这个名学生,可以修改他的相关信息了')
                            name = input('请输入姓名:')
                            dic['name'] = name
                            english = input('请输入英语成绩:')
                            dic['english'] = english
                            python = input('请输入Python成绩:')
                            dic['python'] = python
                            java = input('请输入Java成绩:')
                            dic['java'] = java
                            wfile.write(str(dic)+'\n')
                        else:
                            wfile.write(str(dic)+'\n')
                            flag = True

                    if not flag:
                        print('ID为{0}的学生信息修改成功'.format(answer))
                    else:
                        print('你输入的学生ID:{}不存在!!!'.format(answer))
            else:
                print('没有学生信息!!!')
                break
            show(filename)
            answer = input('是否继续修改其他学生信息?y/n'+'\n')
            if answer in ('y','Y'):
                continue
            else:
                break
        else:
            print('请输入正确的学生ID')

def sort(filename):
    show(filename)
    if os.path.exists(filename):
        with open(filename,'r',encoding='utf-8') as rfile:
            students = rfile.readlines()
        student_new = []
        for student in students:
            dic = dict(eval(student))
            student_new.append(dic)
    else:
        print('未录入学生信息!!!')
    asc_or_desc = input('请选择(0升序,1降序):')
    if asc_or_desc == '0':
        asc_or_desc_bool = False
    elif asc_or_desc == '1':
        asc_or_desc_bool = True
    else:
        print('你输入有误,请重新输入!!!')
        sort(filename)
    mode = input('请选择排序方式(1.按英语排序,2.按Python排序,3.按Java排序,0.按总成绩排序):')
    if mode == '1':
        student_new.sort(key=lambda x : int(x['english']),reverse=asc_or_desc_bool)
    elif mode == '2':
        student_new.sort(key=lambda x : int(x['python']),reverse=asc_or_desc_bool)
    elif mode == '3':
        student_new.sort(key=lambda x : int(x['java']),reverse=asc_or_desc_bool)
    elif mode == '5':
        student_new.sort(key=lambda x : int(x['english']) + int(x['python']) + int(x['java']) ,reverse=asc_or_desc_bool)
    else:
        print('你的输入有误,请重新输入!!!')
        sort(filename)
    display.show_student(student_new)

def  total(filename):
    if os.path.exists(filename):
        with open(filename,'r',encoding='utf-8') as rfile:
            students = rfile.readlines()
        if students != '':
            print('一共有{}名学生'.format(len(students)))
        else:
            print('学生信息为空!!!')
    else:
        print('暂未报错学生信息!!!')

def  show(filename):
    student_lst = []
    if os.path.exists(filename):
        with open(filename,'r',encoding='utf-8') as rfile:
            students = rfile.readlines()
            for student in students:
                dic = dict(eval(student))
                student_lst.append(dic)
        display.show_student(student_lst)
        student_lst.clear()
    else:
        print('暂未保存学生信息!!!')

3.3 save()函数

def save(lst,filename):
    try:
        stu_data = open(filename,'a',encoding='utf-8')
    except:
        stu_data = open(filename,'w',encoding='utf-8')
    for item in lst:
        stu_data.write(str(item)+'\n')
    stu_data.close()

3.4 display()函数

def show_student(lst):
    if len(lst) == 0:
        print('没有查询到学生信息,无数据显示!!!')
        return
    format_title = '{:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}\t'
    print(format_title.format('ID','姓名','英语成绩','Python成绩','Java成绩','总成绩'))
    format_data = '{:^6}\t{:^12}\t{:^10}\t{:^10}\t{:^10}\t{:^10}\t'
    for student in lst:
        print(format_data.format(student.get('id'),
                                 student.get('name'),
                                 student.get('english'),
                                 student.get('python'),
                                 student.get('java'),
                                 int(student.get('english')) + int(student.get('python')) + int(student.get('java'))
                                 ))

3.5 项目打包

安装:pip install PyInstaller
单文件打包:
    pyinstaller -F main.py [打包exe]
    pyinstaller -F -w main.py [不带控制台打包]
    pyinstaller -F -i main.ico main.py [指定图标打包]
多文件打包:
    1.pyi-makespec main.py(将主函数生成对应的spec文件)
    2.修改spec文件,i按察Analysis下是否包含所有py文件,检查pathex的项目路径是否正确
    3.pyinstaller main.spec(对spec文件进行pyinstaller安装)

main.spec文件修改

Analysis:
    ['main.py','menu.py','operate.py','display.py','save.py'],<将所有需要打包py文件写入>
    pathex=['E:\\BigData\\date\\PyCharm\\May2\\project'],<写入正确的项目路径>
    datas=[('date\\student.txt','date'),('icon.ico','icon')],<首先是项目中文件,其次是打包后文件夹名称>

exe:
    name='学生信息管理系统',<指定exe名称>
    icon='icon.ico',<指定图标打包>

Python学生信息管理系统_第2张图片

图片转ico图标工具

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