Python 2.7 TKINTER库中的图像错误

Question

我使用Python 2.7与TKINTER创建图形接口（对于ArcGIS脚本），但是当我想将壁纸加载到接口中时，它会给我错误 “ _tkinter.tclerror：无法在图像文件[图像路径]中识别数据” 我在互联网上搜索了各种解决方案，最好的解决方案是PIL库。 找不到其他解决方案？ 以下是书面代码。谢谢

from Tkinter import * 
import os

ROOT_PATH = os.getcwd()
window = Tk()
window.title("Update TXT field")
window.geometry("950x350")
window.config(bg = "white")

canvas = Canvas(window, width = 900, height = 350, bg = "white")
canvas.grid(row = 0, column = 1)


img = PhotoImage(file=os.path.join(ROOT_PATH, "logo.png"))
image = canvas.create_image(861,320, image=img)
canvas.pack()

label_path = Label(text = "Add path to folder:")
label_path.grid(row = 1, column = 0)

path_entry = Entry(width = 35)
path_entry.grid(row = 1, column = 1)

button = Button()

window.mainloop()