所用技术：SQLite3,tkinter,openpyxl,pandas
使用Java开发中的MVC思想，代码虽有冗余，但更容易维护
默认账号：admin，密码：123456

1. 使用SQLite3创建商品信息管理系统所需数据表的数据库：commodity_info数据库
2. 创建商品信息表，对项目中的商品信息进行存储
3. 项目不需要添加管理员，管理员账号、密码的添加由管理人员代码添加
   一、登录界面
   
   二、主界面
   
   三、商品信息界面
   
   四、添加商品页面（可批量导入）
   
   源程序：
   main.py

from tkinter import *
from view.login_ui import Application as login


if __name__ == '__main__':
    win = Tk()
    w = 800
    h = 540
    sw = win.winfo_screenwidth()
    # 得到屏幕宽度
    sh = win.winfo_screenheight()
    # 得到屏幕高度
    # 窗口宽高为100
    x = (sw - w) / 2
    y = (sh - h) / 2
    win.geometry('%dx%d+%d+%d' % (w, h, x, y))
    win.title('超市信息管理系统')
    win.resizable(width=False, height=False)
    # 加载login界面
    login(master=win)
    win.mainloop()

login_ui.py

#coding=utf-8
import tkinter
from tkinter import *
import tkinter.font as tkFont
from tkinter import messagebox
from controller import login_verify
from view.index_ui import Application as index_ui


class Application(Frame):
    def __init__(self, master=None):
        super().__init__(master)
        self.master = master
        self.pack()
        self.username = tkinter.StringVar()
        self.password = tkinter.StringVar()
        self.createWidget()

    def createWidget(self):
        # 背景图片
        global photo_login
        photo_login = PhotoImage(file='./images/login.gif')
        self.label_bg = Label(self, image=photo_login)
        self.label_bg.pack()

        # 欢迎语区域
        global photo_login_center
        photo_login_center = PhotoImage(file='./images/login_center.gif')
        label_login_center = Label(self, image=photo_login_center,  width='600', height='340')
        label_login_center.place(x='100', y='100')
        welcome_font_1 =  tkFont.Font(family='宋体', size=30, weight=tkFont.BOLD)
        label_welcome_1 = Label(self, text='Welcome', font=welcome_font_1, bg='#56cdff')
        label_welcome_1.place(x=175, y=170)
        welcome_font_2 = tkFont.Font(family='宋体', size=20, weight=tkFont.BOLD)
        label_welcome_2 = Label(self, text='欢迎登录超市信息', font=welcome_font_2, bg='#56cdff')
        label_welcome_2.place(x=140, y=260)
        label_welcome_3 = Label(self, text='管理系统', font=welcome_font_2, bg='#56cdff')
        label_welcome_3.place(x=195, y=320)

        # 数据输入区域
        login_font = tkFont.Font(family='宋体', size=9)
        login_user = Label(self, text='请输入账号:', font=login_font, bg='#ffffff')
        login_user.place(x=430, y=160)
        Entry(self, highlightthickness=1, font=('宋体', 15), bg='#F3F3F4',textvariable=self.username).place(x=430, y=190,width=240,height=40)
        login_pass = Label(self, text='请输入密码:', font=login_font, bg='#ffffff')
        login_pass.place(x=430, y=240)
        Entry(self, highlightthickness=1,font=('宋体', 15), bg='#F3F3F4', show='*', textvariable=self.password).place(x=430, y=270, width=240, height=40)
        Button(self, text='立即登录', font=('宋体', 15, 'bold'), fg='#000000', bg="#56cdff", command=self.login).place(x=430, y=340, width=240, height=40)

    def login(self):
        errMessage = ""
        username = self.username.get()
        password = self.password.get()
        new_errMessage = login_verify.login_verify(username, password)
        errMessage = errMessage + new_errMessage
        if errMessage != "":
            messagebox.showinfo('提示', errMessage)
            self.password.set('')
        if new_errMessage == '登录成功':
            self.login_destroy()
            # 加载index界面
            index_ui(self.master)

    # 销毁界面
    def login_destroy(self):
        self.destroy()

index_ui.py

from tkinter import *
import tkinter.font as tkFont
from view.about_ui import about_ui_begin
from view.modify_ui import modify_ui_begin
from view.inquire_ui import inquire_ui_begin
from view.add_ui import add_ui_begin
from view.info_ui import info_ui_begin
from view.delete_ui import delete_ui_begin

class Application(Frame):
    def __init__(self, master=None):
        super().__init__(master)
        self.master = master
        self.pack()
        self.createWidget()

    def createWidget(self):
        global photo_bg
        photo_bg = PhotoImage(file='./images/login.gif')
        # 使用时../改为./
        label_bg = Label(self, image=photo_bg)
        label_bg.pack()
        self.frame_left = Frame(self, bg='#68B8BE',width=200, height=540).place(x=0, y=0)
        global photo_Avatar
        photo_Avatar = PhotoImage(file='./images/Avatar.gif')
        label_Avatar = Label(self.frame_left, bg='#68B8BE', image=photo_Avatar)
        label_Avatar.place(x=23, y=25)
        menu_font = tkFont.Font(family='宋体', size=10)
        Button(self.frame_left, text='商品信息', font=menu_font, fg='#000000', bg="#ffffff", command=self.index_info).place(x=30, y=193, width=140, height=30)
        Button(self.frame_left, text='查询商品', font=menu_font, fg='#000000', bg="#ffffff", command=self.index_inquire).place(x=30, y=243, width=140, height=30)
        Button(self.frame_left, text='添加商品', font=menu_font, fg='#000000', bg="#ffffff", command=self.index_add).place(x=30, y=293, width=140, height=30)
        Button(self.frame_left, text='修改商品', font=menu_font, fg='#000000', bg="#ffffff", command=self.index_modify).place(x=30, y=343, width=140, height=30)
        Button(self.frame_left, text='删除商品', font=menu_font, fg='#000000', bg="#ffffff", command=self.index_delete).place(x=30, y=393, width=140, height=30)
        Button(self.frame_left, text='关于', font=menu_font, fg='#000000', bg="#ffffff", command=self.index_about).place(x=30, y=443, width=140, height=30)
        Button(self.frame_left, text='退出', font=menu_font, fg='#000000', bg="#ffffff", command=self.index_quit).place(x=30, y=493, width=140, height=30)

        self.frame_right = Frame(self, width=600, height=540).place(x=200, y=0)
        global photo_index
        photo_index = PhotoImage(file='./images/info.gif')
        Label(self.frame_right, image=photo_index).place(x=200, y=0)

    # 商品信息
    def index_info(self):
        info_ui_begin()
    # 查询商品
    def index_inquire(self):
        inquire_ui_begin()
    # 添加商品
    def index_add(self):
        add_ui_begin()
    # 修改商品
    def index_modify(self):
        modify_ui_begin()
    # 删除商品
    def index_delete(self):
        delete_ui_begin()
    # 关于
    def index_about(self):
        about_ui_begin()

    # 退出-销毁界面
    def index_quit(self):
        self.master.destroy()

完整程序代码下载：python版超市信息管理系统源代码

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