如何将图像添加到tkinter起始页面类？

Question

我正在开发一个简单的Tkinter程序来存储excel中的数据唯一的问题是我不知道如何将图像添加到起始页面类以显示以使应用程序看起来更好。我会感激一点帮助。唯一有效的方法是在app对象之后添加图像，但我只想在起始页面上显示它。

from tkinter import ttk
from datetime import datetime
import tkinter as tk
import xlrd
from xlutils.copy import copy
import xlwt
from PIL import ImageTk, Image

style1 = xlwt.XFStyle()
style1.num_format_str = "D-MM-YY"

read_workbook = xlrd.open_workbook("test2.xls", formatting_info=True)
read_sheet = read_workbook.sheet_by_index(0)

workbook = copy(read_workbook)
sheet = workbook.get_sheet(0)

sheet.write(0, 0, datetime.now(), style1)
sheet.write(0, 1, "Item")
sheet.write(0, 2, "Size")
sheet.write(0, 3, "Color")
sheet.write(0, 4, "Quantity")

LARGE_FONT = ("Times New Roman", 16)
number = read_sheet.nrows

class App(tk.Tk):

    def __init__(self, *args, **kwargs):
        tk.Tk.__init__(self, *args, **kwargs)

        tk.Tk.wm_title(self, "Ordering app")


        container = tk.Frame(self)

        container.pack(side="top", fill="both", expand=True)

        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)

        self.frames = {}

        for F in (StartPage, Chair, Table):
            frame = F(container, self)

            self.frames[F] = frame

            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame(StartPage)

    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()


class StartPage(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)
        item_label = tk.Label(self, text="Select your item ")
        item_label.grid(column=5, row=0)

        chair_button1 = tk.Button(self, text="Chair",
                                  command=lambda: controller.show_frame(Chair))
        chair_button1.pack()
        chair_button1.grid(column=0, row=3)

        table_button = tk.Button(self, text="Table",
                                 command= lambda: controller.show_frame(Table))

        # table_button.pack()

        table_button.grid(column=10, row=3)

class Chair(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)

        size_label = tk.Label(self, text="Enter the size")

        size_label.grid(column=0, row=0)
        self.size_entry = tk.Entry(self)
        self.size_entry.grid(column=2, row=0)

        color_label = tk.Label(self, text="Enter the color")
        color_label.grid(column=0, row=1)
        self.color_entry = tk.Entry(self)
        self.color_entry.grid(column=2, row=1)

        quantity_label = tk.Label(self, text="Enter the quantity")
        quantity_label.grid(column=0, row=2)
        self.quantity_entry = tk.Entry(self)
        self.quantity_entry.grid(column=2, row=2)

        done_button = tk.Button(self, text="Finish the order",
                                command=self.get_chair_data)
        done_button.grid(column=1, row=4)


        button1 = tk.Button(self, text="Back to Home",
                            command=lambda: controller.show_frame(StartPage))
        button1.grid(column=1, row=5)

    def get_chair_data (self):
        global number

        size = self.size_entry.get()
        sheet.write(number, 1, "Chair")
        sheet.write(number, 2, size)

        color = self.color_entry.get()
        sheet.write(number, 3, color)

        quantity = int(self.quantity_entry.get())
        sheet.write(number, 4, quantity)

        number += 1

        workbook.save("test2.xls")


class Table(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)


        size_label = tk.Label(self, text="Enter the size")
        size_label.grid(column=0, row=0)
        self.size_entry = tk.Entry(self)
        self.size_entry.grid(column=2, row=0)

        color_label = tk.Label(self, text="Enter the color")
        color_label.grid(column=0, row=1)
        self.color_entry = tk.Entry(self)
        self.color_entry.grid(column=2, row=1)

        quantity_label = tk.Label(self, text="Enter the quantity")
        quantity_label.grid(column=0, row=2)
        self.quantity_entry = tk.Entry(self)
        self.quantity_entry.grid(column=2, row=2)

        done_button = tk.Button(self, text="Finish the order",
                                command=self.get_table_data)
        done_button.grid(column=1, row=4)

        button2 = tk.Button(self, text="Back to Home",
                             command=lambda: controller.show_frame(StartPage))

        button2.grid(column=1, row=5)


    def get_table_data(self):
        global number

        size = self.size_entry.get()
        sheet.write(number, 1, "Table")
        sheet.write(number, 2, size)

        color = self.color_entry.get()
        sheet.write(number, 3, color)

        quantity = int(self.quantity_entry.get())
        sheet.write(number, 4, quantity)

        number += 1

        workbook.save("test2.xls")


app = App()
app.geometry("500x500")
app.mainloop()