Python实现图书管理系统设计的代码怎么写

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基于python的tkinter，将图书管理系统的界面进行简单的开发，我在这里使用的方法比较简单理解，但是代码过于繁多。添加、删除及修改并未使用数据库，而是使用了csv文件的读取操作，从而替代数据库。

基本效果如下图所示：

该系统将所有代码全都放在一个文件中，源码如下：

import osimport tkinterimport tkinter.messageboxfrom tkinter import *from tkinter import ttk class LoginPage (object):    def __init__(self, master=None):         self.root = master #定义内部变量root         # 获取当前屏幕的宽高        self.width = self.root.winfo_screenwidth()        self.height = self.root.winfo_screenheight()        # 设置窗口大小        self.h = 600        self.w = 800        # 将窗口居中        self.y = (self.height - 600) / 2        self.x = (self.width - 800) / 2        self.root.geometry("%dx%d+%d+%d" %(self.w,self.h,self.x,self.y))        # 不允许修改窗口大小        self.root.resizable(False,False)        self.addnum = StringVar()         self.addname = StringVar()         self.addauthor = StringVar()         self.addchu = StringVar()         self.adddate = StringVar()         self.addpri = StringVar()         self.altnum = StringVar()         self.altname = StringVar()         self.altauthor = StringVar()         self.altchu = StringVar()         self.altdate = StringVar()         self.altpri = StringVar()         self.createPage()      # 创建页面    def createPage(self):         #表格        tree = ttk.Treeview(self.root)        tree.place(x=10,y=10,width=780,height=260)        # #定义列        tree["columns"] = ("编号","书名","作者", "出版社", "出版日期", "价格")        tree['show'] = 'headings'        # 设置列，列还不显示        tree.column("编号", width=80,anchor ='c')        tree.column("书名", width=150,anchor ='c')        tree.column("作者", width=150,anchor ='c')        tree.column("出版社", width=150,anchor ='c')        tree.column("出版日期", width=150,anchor ='c')        tree.column("价格", width=100,anchor ='c')        #设置表头        tree.heading("编号", text="编号")        tree.heading("书名", text="书名")        tree.heading("作者", text="作者")        tree.heading("出版社", text="出版社")        tree.heading("出版日期", text="出版日期")        tree.heading("价格", text="价格")        #添加数据        f = open('图书.csv','r',encoding='utf-8')        for line in f.readlines():            info = line[:-1].split(",")            tree.insert("", 0, values=(info[0],info[1],info[2],info[3],info[4],info[5]))        f.close()         # 添加编号        addnum = Label(self.root, text="编号",font=('微软雅黑',10,''),anchor='w')        addnum.place(x=42.5,y=280,height=20,width=80)        addnuminput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.addnum)        addnuminput.place(x=122.5,y=279,height=24,width=105)        # 添加书名        addname = Label(self.root, text="书名",font=('微软雅黑',10,''),anchor='w')        addname.place(x=42.5,y=310,height=20,width=80)        addnameinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.addname)        addnameinput.place(x=122.5,y=309,height=24,width=105)        # 添加作者        addauthor = Label(self.root, text="作者",font=('微软雅黑',10,''),anchor='w')        addauthor.place(x=42.5,y=340,height=20,width=80)        addauthorinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.addauthor)        addauthorinput.place(x=122.5,y=339,height=24,width=105)        # 添加出版社        addchu = Label(self.root, text="出版社",font=('微软雅黑',10,''),anchor='w')        addchu.place(x=42.5,y=370,height=20,width=80)        addchuinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.addchu)        addchuinput.place(x=122.5,y=369,height=24,width=105)        # 添加出版日期        adddate = Label(self.root, text="出版日期",font=('微软雅黑',10,''),anchor='w')        adddate.place(x=42.5,y=400,height=20,width=80)        adddateinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.adddate)        adddateinput.place(x=122.5,y=399,height=24,width=105)        # 添加价格        addpri = Label(self.root, text="价格",font=('微软雅黑',10,''),anchor='w')        addpri.place(x=42.5,y=430,height=20,width=80)        addpriinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.addpri)        addpriinput.place(x=122.5,y=429,height=24,width=105)        # 添加按钮        add = Button(self.root,command=self.click, text ="添加书本",font=('微软雅黑',10,''),activeforeground='#ffffff',fg='#ffffff',activebackground='#7cba59',bd=2,bg='#2aa515')        add.place(x=105,y=500,height=35,width=100)          # 修改编号        altnum = Label(self.root, text="编号",font=('微软雅黑',10,''),anchor='w')        altnum.place(x=292.5,y=280,height=20,width=80)        altnuminput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.altnum)        altnuminput.place(x=372.5,y=279,height=24,width=105)        # 修改书名        altname = Label(self.root, text="书名",font=('微软雅黑',10,''),anchor='w')        altname.place(x=292.5,y=310,height=20,width=80)        altnameinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.altname)        altnameinput.place(x=372.5,y=309,height=24,width=105)        # 修改作者        altauthor = Label(self.root, text="作者",font=('微软雅黑',10,''),anchor='w')        altauthor.place(x=292.5,y=340,height=20,width=80)        altauthorinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.altauthor)        altauthorinput.place(x=372.5,y=339,height=24,width=105)        # 修改出版社        altchu = Label(self.root, text="出版社",font=('微软雅黑',10,''),anchor='w')        altchu.place(x=292.5,y=370,height=20,width=80)        altchuinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.altchu)        altchuinput.place(x=372.5,y=369,height=24,width=105)        # 修改出版日期        altdate = Label(self.root, text="出版日期",font=('微软雅黑',10,''),anchor='w')        altdate.place(x=292.5,y=400,height=20,width=80)        altdateinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.altdate)        altdateinput.place(x=372.5,y=399,height=24,width=105)        # 修改价格        altpri = Label(self.root, text="价格",font=('微软雅黑',10,''),anchor='w')        altpri.place(x=292.5,y=430,height=20,width=80)        altpriinput = Entry(self.root,font=('微软雅黑',10,''),textvariable=self.altpri)        altpriinput.place(x=372.5,y=429,height=24,width=105)        # 修改按钮        alter = Button(self.root,command=self.altclick, text ="修改书本",font=('微软雅黑',10,''),activeforeground='#ffffff',fg='#ffffff',activebackground='#7cba59',bd=2,bg='#2aa515')        alter.place(x=350,y=500,height=35,width=100)        # 保存按钮        pre = Button(self.root,command=self.show, text ="保存书本信息",font=('微软雅黑',10,''),activeforeground='#ffffff',fg='#ffffff',activebackground='#7cba59',bd=2,bg='#2aa515')        pre.place(x=595,y=500,height=35,width=100)     # 写入判断输入框是否有空值    def Isspace(self,text):        temp = 0        for i in text:           if not i.isspace():               temp = 1               break        if temp==1:            return 0        else:            return 1    # 检查写入是否有空值    def click(self):        addnum = self.addnum.get()        addname = self.addname.get()        addauthor = self.addauthor.get()        addchu = self.addchu.get()        adddate = self.adddate.get()        addpri = self.addpri.get()        if self.Isspace(addnum) or self.Isspace(addname) or self.Isspace(addauthor) or self.Isspace(addchu) or self.Isspace(adddate) or self.Isspace(addpri) :            tkinter.messagebox.showerror(title='提示', message ="请填写所有信息")        else:            self.write(addnum,addname,addauthor,addchu,adddate,addpri)    # 写入信息    def write(self,addnum,addname,addauthor,addchu,adddate,addpri):        f = open('图书.csv','r',encoding='utf-8')        for line in f.readlines():            info = line[:-1].split(",")            if len(info)<6:                break            if info[0] ==addnum and info[1] ==addname:                 tkinter.messagebox.showinfo(title='结果', message ="已存在该图书信息！")                 f.close()                 return         f.close()        f = open('图书.csv','a',encoding='utf-8')        f.write('{},{},{},{},{},{}\n'.format(addnum,addname,addauthor,addchu,adddate,addpri))        f.close()        tkinter.messagebox.showinfo(title='提示', message ="写入成功,点击保存后更新")     # 检查修改信息是否空白    def altclick(self):        altnum = self.altnum.get()        altname = self.altname.get()        altauthor = self.altauthor.get()        altchu = self.altchu.get()        altdate = self.altdate.get()        altpri = self.altpri.get()        if self.Isspace(altnum) or self.Isspace(altname) or self.Isspace(altauthor) or self.Isspace(altchu) or self.Isspace(altdate) or self.Isspace(altpri) :            tkinter.messagebox.showerror(title='提示', message ="输入项为空")        else:            self.modify(altnum,altname,altauthor,altchu,altdate,altpri)     # 修改信息    def modify(self,altnum,altname,altauthor,altchu,altdate,altpri):        temp = 0        with open("图书.csv","r",encoding="utf-8") as f:            lines = f.readlines()           with open("图书.csv","w",encoding="utf-8") as f_w:            for line in lines:                info = line[:-1].split(",")                if info[0] ==altnum:                    temp = 1                    f_w.write('{},{},{},{},{},{}\n'.format(altnum,altname,altauthor,altchu,altdate,altpri))                    continue                f_w.write(line)        if temp==0:            tkinter.messagebox.showerror(title='提示', message ="没有该信息")        else:            tkinter.messagebox.showinfo(title='提示', message ="修改成功，点击保存后更新")    # 保存信息并显示    def show(self):        self.createPage() root = Tk() root.title('图书管理') LoginPage(root) root.mainloop()

在运行代码前需要在同级文件夹下创建一个名为"图书"的csv文件，如下图所示：

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