Como criar imagens de fundo em Tknter

# Import module 
from tkinter import *
  
# Create object 
root = Tk()
  
# Adjust size 
root.geometry("400x400")
  
# Add image file
bg = PhotoImage(file = "Your_image.png")
  
# Show image using label
label1 = Label( root, image = bg)
label1.place(x = 0, y = 0)
  
label2 = Label( root, text = "Welcome")
label2.pack(pady = 50)
  
# Create Frame
frame1 = Frame(root)
frame1.pack(pady = 20 )
  
# Add buttons
button1 = Button(frame1,text="Exit")
button1.pack(pady=20)
  
button2 = Button( frame1, text = "Start")
button2.pack(pady = 20)
  
button3 = Button( frame1, text = "Reset")
button3.pack(pady = 20)
  
# Execute tkinter
root.mainloop()
uzoma Nwachukwu