如何使用上传按钮显示图片，并使用Tkinter python动态调整窗口大小，我需要添加上传按钮

from tkinter import Tk, Button, Label
from tkinter.filedialog import askopenfilename
from PIL import Image, ImageTk

root = Tk()
root.title("图片上传示例")

def upload_image():
    # 弹出文件选择对话框，选择要上传的图片文件
    filename = askopenfilename(filetypes=[("Image Files", "*.jpg;*.jpeg;*.png;*.gif")])
    
    # 使用PIL库打开图片文件
    image = Image.open(filename)
    
    # 根据图片大小调整窗口大小
    root.geometry(f"{image.width}x{image.height}")
    
    # 将图片显示在窗口中
    photo = ImageTk.PhotoImage(image)
    label = Label(root, image=photo)
    label.image = photo
    label.pack()

upload_button = Button(root, text="上传图片", command=upload_image)
upload_button.pack()

root.mainloop()

from tkinter import Tk, Button, Label
from tkinter.filedialog import askopenfilename
from PIL import Image, ImageTk

root = Tk()
root.title("图片上传示例")

def upload_image():
    filename = askopenfilename(filetypes=[("Image Files", "*.jpg;*.jpeg;*.png;*.gif")])
    image = Image.open(filename)
    root.geometry(f"{image.width}x{image.height}")
    photo = ImageTk.PhotoImage(image)
    label = Label(root, image=photo)
    label.image = photo
    label.pack()

upload_button = Button(root, text="上传图片", command=upload_image)
upload_button.pack()

root.mainloop()