[Python] Is there a way for empty tkinter frame objects to take up space?

I have an app which you can upload a picture into an image label object, but until I uploaded the picture, the image label just didn't take up space. So I put the image in a frame, but it still didn't take up space until I uploaded the image. Is there any way around this?

Here is my code:

from tkinter import filedialog
from tkinter import *
from PIL import Image, ImageTk

####################### FUNCTIONS ################################

def upload_image():

file_path = filedialog.askopenfilename()

if file_path:
img = Image.open(file_path)

img_tk = ImageTk.PhotoImage(img)

image_label.image = img_tk
image_label.config(image=img_tk)



##################### GUI ##################################

window = Tk()

img_frame = Frame(window, width=500, height=500)
image_label = Label(img_frame)

upload_button = Button(window, text='Upload Image', command=upload_image)

# Other UI things...



img_frame.grid(column=3, row=2, columnspan=5, rowspan=10, padx=50)
image_label.pack()
upload_button.grid(column=1,row=1, padx=60, pady=60)


window.mainloop()

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