diff --git a/demo.py b/demo.py
new file mode 100644
index 0000000..279977f
--- /dev/null
+++ b/demo.py
@@ -0,0 +1,429 @@
+from tkinter import *
+from tkinter import messagebox
+import csv
+from datetime import datetime
+from tkinter import ttk
+
+import demouser
+
+class library(Frame):
+    def __init__(self, master=None):
+        super().__init__(master)
+        self.master = master
+        self.num1 = 0
+        #           判断打开另一个窗口的条件
+        self.pack()
+        self.create(time=self.time2())
+        self.enter = Frame()
+        self.look = Frame()
+        self.showall()
+    def time2(self):
+        while True:
+            times = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
+            self.title = Button(text=times, font=("宋体", 10), bg='white', relief=GROOVE, bd=10, width=30,
+                                height=1, command=self.time2)
+            self.title.place(x=2, y=80)
+            self.title.after(1000, self.time2)
+            return times
+
+    def find(self):
+        flag = 0
+        bookName = self.bookName1.get()
+        bookWriter = self.bookWriter1.get()
+        bookPrice = self.bookPrice1.get()
+        bookOut = self.bookOut1.get()
+        bookInTime = self.bookInTime1.get()
+        bookNum = self.bookNum1.get()
+        filename = 'book.csv'
+        with open(filename, 'r', newline="", encoding='utf-8') as f:
+            data1 = csv.reader(f)
+            for line in data1:
+                if line[0] == bookName:
+                    self.showName()
+                    flag += 1
+                    break
+                elif line[1] == bookWriter:
+                    self.showWriter()
+                    flag += 1
+                    break
+                elif line[2] == bookPrice:
+                    self.showPrice()
+                    flag += 1
+                    break
+                elif line[3] == bookOut:
+                    self.showOut()
+                    flag += 1
+                    break
+                elif line[4] == bookInTime:
+                    self.showInTime()
+                    flag += 1
+                    break
+                elif line[5] == bookNum:
+                    self.showNum()
+                    flag += 1
+                    break
+            if flag == 0:
+                messagebox.showinfo('搜索', '不存在')
+    def add(self):
+        rebacker = 0
+        # 借阅者状态，通过用户名字判断，若状态为0则是无主状态
+        bookName = self.bookName1.get()
+        bookWriter = self.bookWriter1.get()
+        bookPrice = self.bookPrice1.get()
+        bookOut = self.bookOut1.get()
+        bookInTime = self.bookInTime1.get()
+        bookNum = self.bookNum1.get()
+
+        if bookName == '' or bookWriter == '' or bookPrice == '' \
+                or bookOut == '' or bookInTime == '' or bookNum == '':
+            messagebox.showwarning('输入错误', "输入不能为空")
+
+        else:
+            bookstate = 1
+            datas =[[bookName, bookWriter, bookPrice, bookOut, bookInTime, bookNum, bookstate,rebacker]]
+            filename = 'book.csv'
+            with open(filename, 'r', newline="", encoding='utf-8') as f:
+                data1 = csv.reader(f)
+                for row in data1:
+                    print(row)
+                    if row[0] == bookName and row[1] == bookWriter and row[2] == bookPrice \
+                            and row[3] == bookOut and row[4] == bookInTime and row[5] == bookNum:
+                        messagebox.showinfo("入库", "已有该图书")
+                        return
+            with open(filename, 'a', newline="", encoding='utf-8')as f:
+                write = csv.writer(f)
+                for row in datas:
+                    write.writerow(row)
+            messagebox.showinfo("入库", "已入库")
+            self.showall()
+
+    def borrow(self):
+        bookName = self.bookName1.get()
+        bookWriter = self.bookWriter1.get()
+        bookPrice = self.bookPrice1.get()
+        bookOut = self.bookOut1.get()
+        bookInTime = self.bookInTime1.get()
+        bookNum = self.bookNum1.get()
+        filename = 'book.csv'
+        with open(filename, 'r', newline="", encoding='utf-8') as h:
+            data2 = csv.reader(h)
+            st = list(data2)
+        if bookName == '' or bookWriter == '' or bookPrice == '' \
+                or bookOut == '' or bookInTime == '' or bookNum == '':
+            messagebox.showwarning('输入错误', "输入不能为空")
+
+        else:
+            num = 0
+            temp = 0
+            filename = 'book.csv'
+            with open(filename, 'r', newline="", encoding='utf-8') as f:
+                data1 = csv.reader(f)
+                for row in data1:
+                    if row[0] != bookName:
+                        num += 1
+                        x = num
+                        # print(x)
+                    elif row[0] == bookName and row[1] == bookWriter and row[2] == bookPrice \
+                            and row[3] == bookOut and row[4] == bookInTime and row[5] == bookNum:
+                        temp = 1
+                        break
+            with open(filename, 'r', newline="", encoding='utf-8') as h:
+                data2 = csv.reader(h)
+                st = list(data2)
+            if temp == 1 and st[x][6] == '1' and st[x][7] == '0':
+                messagebox.askyesnocancel('借阅', '是否借阅此书')
+                if messagebox.YES:
+                    with open(filename, 'r', newline="", encoding='utf-8') as f:
+                        reader = csv.reader(f)
+                        book = list(reader)
+                        book[num][6] = 0
+                        book[num][7] =demouser.app.usagename
+                        with open(filename, 'w', newline="", encoding='utf-8') as f1:
+                            writer = csv.writer(f1)
+                            for i in book:
+                                writer.writerow(i)
+
+                self.showback()
+            else:
+                messagebox.askyesnocancel('借阅', '该书不存在或已经被借走')
+    # 归还，代码与上面的借阅一致
+    def reback(self):
+        bookName = self.bookName1.get()
+        bookWriter = self.bookWriter1.get()
+        bookPrice = self.bookPrice1.get()
+        bookOut = self.bookOut1.get()
+        bookInTime = self.bookInTime1.get()
+        bookNum = self.bookNum1.get()
+        filename = 'book.csv'
+        with open(filename, 'r', newline="", encoding='utf-8') as h:
+            data2 = csv.reader(h)
+            st = list(data2)
+        if bookName == '' or bookWriter == '' or bookPrice == '' \
+                or bookOut == '' or bookInTime == '' or bookNum == '':
+            messagebox.showwarning('输入错误', "输入不能为空")
+
+        else:
+            num = 0
+            temp = 0
+            filename = 'book.csv'
+            with open(filename, 'r', newline="", encoding='utf-8') as f:
+                data1 = csv.reader(f)
+                for row in data1:
+                    if row[0] != bookName:
+                        num += 1
+                        x = num
+                        print(x)
+                    elif row[0] == bookName and row[1] == bookWriter and row[2] == bookPrice \
+                            and row[3] == bookOut and row[4] == bookInTime and row[5] == bookNum:
+                        temp = 1
+                        break
+            with open(filename, 'r', newline="", encoding='utf-8') as h:
+                data2 = csv.reader(h)
+                st = list(data2)
+            if temp == 1 and st[x][6] == '0' :
+                messagebox.askyesnocancel('归还', '是否归还此书')
+                if messagebox.YES and st[x][7] == demouser.app.usagename:
+                    with open(filename, 'r', newline="", encoding='utf-8') as f:
+                        reader = csv.reader(f)
+                        book = list(reader)
+                        book[num][6] = 1
+                        book[num][7] = '0'
+                        with open(filename, 'w', newline="", encoding='utf-8') as f1:
+                            writer = csv.writer(f1)
+                            for i in book:
+                                writer.writerow(i)
+                else:
+                    messagebox.showinfo('归还', '用户权限不足')
+
+                self.showback()
+            else:
+                messagebox.askyesnocancel('借阅', '已经归还')
+    # 创建界面
+
+    def create(self,time):
+        self.title = Label(text="欢迎参观XXX的图书管理系统", font=("宋体", 40), bg='#e07b69', relief=GROOVE, bd=10)
+        self.title.place(x=0, y=0)
+        #         标签title
+        self.booknumber = 0
+        # 获取ms时间戳
+        self.bookName = Label(text="书名", font=("宋体", 10), width=10, height=2, relief=SOLID, bd=2)
+        self.bookWriter = Label(text="作者", font=("宋体", 10), width=10, height=2, relief=SOLID, bd=2)
+        self.bookPrice = Label(text="价格", font=("宋体", 10), width=10, height=2, relief=SOLID, bd=2)
+        self.bookOut = Label(text="出版社", font=("宋体", 10), width=10, height=2, relief=SOLID, bd=2)
+        self.bookInTime = Label(text="入库时间", font=("宋体", 10), width=10, height=2, relief=SOLID, bd=2)
+        self.booknum = Label(text="分配检索号", font=("宋体", 10), width=10, height=2, relief=SOLID, bd=2)
+
+        self.bookName.place(x=2, y=220)
+        self.bookWriter.place(x=2, y=250)
+        self.bookPrice.place(x=2, y=280)
+        self.bookOut.place(x=2, y=310)
+        self.bookInTime.place(x=2, y=340)
+        self.booknum.place(x=2, y=369)
+
+        self.title = Button(text="图书列表" , font=("宋体", 10), bg='white', relief=GROOVE, bd=10, width=14,
+                            height=1, command=self.showall)
+        self.title.place(x=250, y=80)
+        self.title = Button(text='！！点击看借出去的书本列表！！', font=("宋体", 10), bg='white', relief=SOLID, bd=2, width=50,
+                            height=2,command=self.showback)
+        self.title.place(x=2, y=122)
+        # 输入文本框的途径和位置
+        self.bookName2 = StringVar()
+        self.bookWriter2 = StringVar()
+        self.bookPrice2 = StringVar()
+        self.bookOut2 = StringVar()
+        self.bookInTime2 = StringVar()
+        self.bookNum2 = StringVar()
+
+        self.bookName1 = Entry(font=("宋体", 20), width=20, relief=SOLID, bd=2, textvariable=self.bookName2)
+        self.bookWriter1 = Entry(font=("宋体", 20), width=20, relief=SOLID, bd=2, textvariable=self.bookWriter2)
+        self.bookPrice1 = Entry(font=("宋体", 20), width=20, relief=SOLID, bd=2, textvariable=self.bookPrice2)
+        self.bookOut1 = Entry(font=("宋体", 20), width=20, relief=SOLID, bd=2, textvariable=self.bookOut2)
+        self.bookInTime1 = Entry(font=("宋体", 20), width=20, relief=SOLID, bd=2, textvariable=self.bookInTime2)
+        self.bookNum1 = Entry(font=("宋体", 20), width=20, relief=SOLID, bd=2, textvariable=self.bookNum2)
+
+        self.bookName1.place(x=77, y=220)
+        self.bookWriter1.place(x=77, y=250)
+        self.bookPrice1.place(x=77, y=280)
+        self.bookOut1.place(x=77, y=310)
+        self.bookInTime1.place(x=77, y=340)
+        self.bookNum1.place(x=77, y=369)
+
+        #         事件触发按钮
+        self.bt1 = Button(text="搜索", width=14, height=1, bg="#AFEEEE", font=("宋体", 15),
+                          bd=2, relief=SOLID, command=self.find)
+        self.bt2 = Button(text="入库", width=14, height=1, bg="#AFEEEE", font=("宋体", 15),
+                          bd=2, relief=SOLID, command=self.add)
+        self.bt3 = Button(text="借阅", width=14, height=1, bg="#AFEEEE", font=("宋体", 15),
+                          bd=2, relief=SOLID, command=self.borrow)
+        self.bt4 = Button(text="归还", width=14, height=1, bg="#AFEEEE", font=("宋体", 15),
+                          bd=2, relief=SOLID, command=self.reback)
+
+
+        self.bt1.place(x=100, y=410)
+        self.bt2.place(x=100, y=465)
+        self.bt3.place(x=100, y=520)
+        self.bt4.place(x=100, y=585)
+
+        # 借阅时间的设定
+        tuk = LabelFrame(bd=2,relief=SOLID,width=360,height=50,text='借阅时间：')
+        tuk.place(x=2, y=165)
+
+        self.yearEntry = IntVar()
+        self.monthEntry = IntVar()
+        self.dayEntry = IntVar()
+        self.year = Spinbox(from_=2023, to=2200, increment=1, textvariable=self.yearEntry, width=10)
+        self.month = Spinbox(from_=1, to=12, increment=1, textvariable=self.monthEntry, wrap=True, width=10)
+        self.day = Spinbox(from_=1, to=30, increment=1, textvariable=self.dayEntry, wrap=True, width=10)
+        self.borrow =Button(text='确认',bd=2,relief=SOLID,height=1,width=8,command=self.TimeChoice)
+
+        self.year.place(x=20, y=190)
+        self.month.place(x=104, y=190)
+        self.day.place(x=188, y=190)
+        self.borrow.place(x=280,y=180)
+    def show(self):
+        num=0
+        filename = 'book.csv'
+        with open(filename, 'r', newline="", encoding='utf-8') as h:
+            data2 = csv.reader(h)
+            st = list(data2)
+        self.tree = ttk.Treeview(rootMain)
+        self.tree.place(x=380, y=80, width=412, height=560)
+        # #定义列
+        self.tree["columns"] = ("书名", "作者", "价格", "出版社", "入库时间", "分配检索号")
+        self.tree['show'] = 'headings'
+        # 设置列，列还不显示
+        self.tree.column("书名", width=20, anchor='c')
+        self.tree.column("作者", width=40, anchor='c')
+        self.tree.column("价格", width=40, anchor='c')
+        self.tree.column("出版社", width=40, anchor='c')
+        self.tree.column("入库时间", width=40, anchor='c')
+        self.tree.column("分配检索号", width=23, anchor='c')
+        # 设置表头
+        self.tree.heading("书名", text="书名")
+        self.tree.heading("作者", text="作者")
+        self.tree.heading("价格", text="价格")
+        self.tree.heading("出版社", text="出版社")
+        self.tree.heading("入库时间", text="入库时间")
+        self.tree.heading("分配检索号", text="分配检索号")
+        self.tree.selection()
+        self.tree.bind('<Button-1>',self.showEntey)
+    def showall(self):
+        self.show()
+        f = open('book.csv', 'r', encoding='utf-8')
+        for line in f.readlines():
+            info = line[:-1].split(",")
+            if info[6] == '1':
+               self.tree.insert("", 0, values=(info[0], info[1], info[2], info[3], info[4], info[5]))
+        f.close()
+
+    def showback(self):
+        self.show()
+        f = open('book.csv', 'r', encoding='utf-8')
+        for line in f.readlines():
+            info = line[:-1].split(",")
+            if info[6] == '0':
+                self.tree.insert("", 0, values=(info[0], info[1], info[2], info[3], info[4], info[5]))
+        f.close()
+
+    def showName(self):
+        self.show()
+        f = open('book.csv', 'r', encoding='utf-8')
+        for line in f.readlines():
+            info = line[:-1].split(",")
+            if info[0] ==self.bookName2.get():
+                self.tree.insert("", 0, values=(info[0], info[1], info[2], info[3], info[4], info[5]))
+        f.close()
+    # 按照作者在视窗显示
+
+    def showWriter(self):
+        self.show()
+        f = open('book.csv', 'r', encoding='utf-8')
+        for line in f.readlines():
+            info = line[:-1].split(",")
+            if info[1] == self.bookWriter2.get():
+                self.tree.insert("", 0, values=(info[0], info[1], info[2], info[3], info[4], info[5]))
+        f.close()
+    # 按照出版社在视窗显示
+
+    def showOut(self):
+        self.show()
+        f = open('book.csv', 'r', encoding='utf-8')
+        for line in f.readlines():
+            info = line[:-1].split(",")
+            if info[3] == self.bookOut2.get():
+                self.tree.insert("", 0, values=(info[0], info[1], info[2], info[3], info[4], info[5]))
+        f.close()
+
+    # 按照检索号在视窗显示
+    def showNum(self):
+        self.show()
+        f = open('book.csv', 'r', encoding='utf-8')
+        for line in f.readlines():
+            info = line[:-1].split(",")
+            if info[5] == self.bookNum2.get():
+                self.tree.insert("", 0, values=(info[0], info[1], info[2], info[3], info[4], info[5]))
+        f.close()
+    # 按照价格在视窗显示
+
+    def showPrice(self):
+        self.show()
+        f = open('book.csv', 'r', encoding='utf-8')
+        for line in f.readlines():
+            info = line[:-1].split(",")
+            if info[2] == self.bookPrice2.get():
+                self.tree.insert("", 0, values=(info[0], info[1], info[2], info[3], info[4], info[5]))
+        f.close()
+    # 按照入库时间在视窗显示
+    def showInTime(self):
+        self.show()
+        f = open('book.csv', 'r', encoding='utf-8')
+        for line in f.readlines():
+            info = line[:-1].split(",")
+            if info[4] == self.bookInTime2.get():
+                self.tree.insert("", 0, values=(info[0], info[1], info[2], info[3], info[4], info[5]))
+        f.close()
+    # 选中输入输入框
+    def showEntey(self,event):
+        selcet1 = self.tree.selection()
+        itemlist = self.tree.item(selcet1)
+        x = list(itemlist.values())
+        itemchoice = list(x[2])
+        self.bookName2.set(itemchoice[0])
+        self.bookWriter2.set(itemchoice[1])
+        self.bookPrice2.set(itemchoice[2])
+        self.bookOut2.set(itemchoice[3])
+        self.bookInTime2.set(itemchoice[4])
+        self.bookNum2.set(itemchoice[5])
+
+    def TimeChoice(self):
+        flag = 0
+        borrowTimelist = [self.yearEntry.get(), self.monthEntry.get(), self.dayEntry.get()]
+        print(borrowTimelist)
+
+        times = datetime.now().strftime("%Y-%m-%d")
+        print(times.split('-'))
+        print(int(borrowTimelist[0])-int(times[0]))
+        for j in range(3):
+            # 遍历三次 查看俩值是否相等
+            if int(borrowTimelist[j])-int(times[j]) == 0:
+                print(int(borrowTimelist[j])-int(times[j]))
+                flag += 1
+            elif int(borrowTimelist[j])-int(times[j]) < 0 and flag == 0:
+                messagebox.showinfo("借阅", "请重新查看你的时间有误")
+
+        if flag == 3:
+            messagebox.showinfo("借阅", '您借阅的图书已到期限')
+if __name__ == '__main__':
+    demouser.rootEnter = Tk()
+    demouser.rootEnter.geometry('410x140'+'+400+300')
+    demouser.rootEnter.title("图书管理系统")
+    demouser.app = demouser.Application(master=demouser.rootEnter)
+    demouser.rootEnter.mainloop()
+    print(demouser.app.num)
+    if demouser.app.num == 1:
+        print(demouser.app.usagename)
+        rootMain = Tk()
+        rootMain.geometry('800x650'"+400+200")
+        main1 = library(master=rootMain)
+        rootMain.title("图书管理系统")
+        rootMain.mainloop()
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