尝试在Tkinter画布中显示图像时出错

Question

我试图创建并显示一个空白图像，以便稍后进行编辑和更新。当不使用tkinter时，仅在图像显示时，此代码有效。当我运行以下代码时：

from random import randint
from time import *
from PIL import Image as Img
from PIL import ImageTk as ImgTk
from tkinter import *
main = Tk()
main.geometry('1001x1001')
width, height = map(int, input('width and height\n').split())
canvas = Canvas(main, width = width, height = height)
canvas.pack()
next_cells = []
img = Img.new('RGB', (width, height))
pix = img.load()
tkpix = ImgTk.PhotoImage(pix)
imgsprite = canvas.create_image(width,height,image=pix)
main.mainloop()

我收到以下错误：

File "/Applications/eeie", line 14, in <module>
  tkpix = ImgTk.PhotoImage(pix)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/PIL/ImageTk.py", line 108, in __init__
  mode = Image.getmodebase(mode)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/PIL/Image.py", line 275, in getmodebase
  return ImageMode.getmode(mode).basemode
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/PIL/ImageMode.py", line 64, in getmode
  return _modes[mode]

builtins.KeyError: <PixelAccess object at 0x108aa4790>

是什么原因导致此错误？

Answer 1

在这里，用代码描述。

from tkinter import *
import Image, ImageTk

# create canvas
canvas = Canvas(width=300, height=200, bg='black')
canvas.pack()
# create image object
img = Image.new('RGB', (60, 30), color='red')
new_image = ImageTk.PhotoImage(img)
# load into canvas
canvas.create_image(50, 10, image=new_image, anchor=NW)
mainloop()

输出：

要更新canvas创建功能，并在对对象进行更改后更新根。

from tkinter import *
import Image, ImageTk
import time


def update_position():
    while True:
        canvas.move(rectangle, 30, 10)
        time.sleep(1)
        root.update()


root = Tk()
# create canvas
canvas = Canvas(root, width=300, height=200, bg='black')
canvas.pack()
# create image object
img = Image.new('RGB', (60, 30), color='red')
new_image = ImageTk.PhotoImage(img)
# load into canvas
rectangle = canvas.create_image(50, 10, image=new_image, anchor=NW)
update_position()
root.mainloop()