当我使用按钮时，画布中的图像(tkinter)不会显示

Question

在我的程序中，我想在画布中显示一个图像，该图像是我之前通过按钮命令创建的。

这是我的代码：

from Tkinter import Tk,Button,Canvas,PhotoImage
from PIL import Image, ImageTk

def dessiner ():
    
    # open the image 
    image = Image.open("img1.png")
    image = image.resize( (400,300), Image.ANTIALIAS) # resize the image to be show in the canvas
    img = ImageTk.PhotoImage(image)
    canvas.create_image(200, 175, image = img)
    
    
    return 0
mw = Tk()
canvas = Canvas(mw, 
width =400, height =650, 
bg="light yellow")
canvas.pack(side ="right")
button_plot = Button(mw, text = "dessiner", command = dessiner, width = 50, fg = "red")
button_plot.pack()
mw.mainloop()

Answer 1

我使用方法.show（）找到解决方案

 plt.show()