用tkinter创建一个Python GUI并尝试使用OOP

Question

我是python的新手， 我一直按照《 Python GUI编程食谱》这本书的步骤进行操作 GUI可以正常工作，但方法无法正常工作，请帮助：

import tkinter as tk
from tkinter import ttk
from tkinter import scrolledtext
from tkinter import Menu
from tkinter import messagebox as mBox
from tkinter import Spinbox


class OOP:
    def __init__(self):
        self.win=tk.Tk()
        self.win.title("silver and gold")
        self.win.iconbitmap(r'E:\hydra-logo.ico')
        self.GUI()

    def click_me(self):
        self.action.configure(text = "item has been added-- "+ self.matrial.get()+self.weight.get())

    def quit(self):
        self.win.quit()
        self.win.destroy()
        exit()

    def msgbox(self):
        answer=mBox.askyesno('','are you satisfied ?  ')
        if answer==True:
            print("+1 satisfied ")
        else:
            print("+1 unsatisfied ")

    def spin(self):
        value= self.spin.get()
        print(value)
        self.scr.insert(tk.INSERT,value+'\n')

    def GUI(self):
        tabcontrol=ttk.Notebook(self.win)

        tab1=ttk.Frame(tabcontrol)
        tabcontrol.add(tab1,text = 'Entry')

        tab2=ttk.Frame(tabcontrol)
        tabcontrol.add(tab2,text = "Storage")

        tab3=ttk.Frame(tabcontrol)
        tabcontrol.add(tab3,text = "customers")

        tab3=tk.Frame(tab3,bg = 'blue')
        tab3.pack()

        tabcontrol.pack(expand = 1,fill = "both")

        safezone=ttk.LabelFrame(tab1,text = 'my comfort zone')
        safezone.grid(column = 0,row = 0)

        mBox.showinfo('',"Running  ")

        ## my safe zone

        storage=ttk.LabelFrame(tab2,text = 'your storage is here')
        storage.grid(column = 0,row = 0)

        for orangecolor in range(2):
            canvas=tk.Canvas(tab3,width = 150,height = 80,highlightthickness = 0,bg = 'orange')
            canvas.grid(row = orangecolor,column = orangecolor)

        menuBar=Menu(self.win)
        self.win.config(menu = menuBar)

        fileMenu=Menu(menuBar,tearoff = 0)
        HelpMenu=Menu(menuBar,tearoff = 0)
        menuBar.add_cascade(label = "File",menu = fileMenu)
        menuBar.add_cascade(label = "Help",menu = HelpMenu)
        HelpMenu.add_command(label = "About",command = self.msgbox)

        fileMenu.add_command(label = "New")
        fileMenu.add_command(label = "Exit",command = quit)
        fileMenu.add_checkbutton(label = "Night Mode")

        labelsFrame=ttk.LabelFrame(storage,text = "made by essam")
        labelsFrame.grid(column = 0,row = 9,padx = 10,pady = 0)


        ttk.Label(safezone,text = "Choose a metal: ").grid(column = 0,row = 0)
        ttk.Label(safezone,text = "type the weight: ").grid(column = 1,row = 0,sticky = 'W')

        weight=tk.StringVar()
        wightEntered=ttk.Entry(safezone,width = 12,textvariable = weight)
        wightEntered.grid(column = 1,row = 1)
        wightEntered.focus()

        matrial=tk.StringVar()
        matrialEntered=ttk.Combobox(safezone,width = 12,textvariable = matrial,state = 'readonly')
        matrialEntered.grid(column = 0,row = 1)
        matrialEntered [ 'values' ]=("Gold","silver")
        matrialEntered.current(0)

        action=ttk.Button(safezone,text = "add ",command = self.click_me)
        action.grid(column = 4,row = 1)

        radVar=tk.IntVar()
        radVar.set(99)
        colors=[ "blue","gold","red" ]

        spin=Spinbox(safezone,values = (1,2,4,42,100),width = 5,borderwidth = 20,
            relief = tk.SUNKEN,command = self.spin)
        spin.grid(column = 2,row = 1)

        scrolW=30
        scrolH=3
        scr=scrolledtext.ScrolledText(safezone,width = scrolW,height = scrolH,wrap = tk.WORD)
        scr.grid(column = 0,columnspan = 5,row = 7)



    #******




oop =OOP()
oop.win.mainloop()