Tkinter使用按键在画布上移动png

import tkinter as tk

root = tk.Tk()

canvas = tk.Canvas(root, width=500, height=500)
canvas.pack()

image = tk.PhotoImage(file="image.png")

image_item = canvas.create_image(0, 0, image=image, anchor="nw")

def move_image(event):
    if event.keysym == "Up":
        canvas.move(image_item, 0, -10)
    elif event.keysym == "Down":
        canvas.move(image_item, 0, 10)
    elif event.keysym == "Left":
        canvas.move(image_item, -10, 0)
    elif event.keysym == "Right":
        canvas.move(image_item, 10, 0)

canvas.bind_all("<KeyPress-Up>", move_image)
canvas.bind_all("<KeyPress-Down>", move_image)
canvas.bind_all("<KeyPress-Left>", move_image)
canvas.bind_all("<KeyPress-Right>", move_image)

root.mainloop()