如何修复“图像”pyimage10“不存在”错误，为什么会发生？

Question

I am making a tkiner application and that shows a user a page with some basic information and a picture before allowing them to click a button to view live Bitcoin price data. However, when I added the image to the 'start up' page, I got this error from my IDE:

 BTC_img_label = tk.Label(self, image=BTC_img)
 File "C:\Python34\lib\tkinter\__init__.py", line 2609, in __init__
 Widget.__init__(self, master, 'label', cnf, kw)
 File "C:\Python34\lib\tkinter\__init__.py", line 2127, in __init__
 (widgetName, self._w) + extra + self._options(cnf))
 _tkinter.TclError: image "pyimage10" doesn't exist

I believe that these are the lines of code that are causing my error (they are the same lines that add the image to the 'start up' page):

BTC_img = tk.PhotoImage(file='bitcoin.png')
BTC_img_label = tk.Label(self, image=BTC_img)
BTC_img_label.image = BTC_img
BTC_img_label.grid(row=2, column=0)

I also noticed that the icon that I set does not show in the GUI window when the program is run, only the default Tkinter feather icon. Here's my icon setting code if anyone is interested (though I'm pretty sure it's not causing my error):

tk.Tk.iconbitmap(self, default='main.ico')

And yes, for anyone wondering, I did import tkinter as tk, so that is not my error. If anyone could also tell me why this error happens, I would be very interested: I haven't seen a lot of other examples of this happening, and the ones I have seen had no mention to my icon problem. Hope somebody can figure this out!

Answer 1

Like @joost-broekhuizen, I've had the same problem using Tkinter together with matplotlib.pyplot functions. Adding a 'master' to the PhotoImage function solved the problem for me.

Broken code (raises: TclError: image "pyimage10" doesn't exist):

import matplotlib
matplotlib.use("TkAgg")
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
import matplotlib.pyplot as plt
import Tkinter as tk
from PIL import Image, ImageTk

fig = plt.figure()

root = tk.Tk()
image = Image.open("background.png")
photo = ImageTk.PhotoImage(image)
label = tk.Label(root, image=photo)
label.image = image
label.pack()

root.mainloop()

Adding 'master=root' to PhotoImage solved this error!

photo = ImageTk.PhotoImage(image, master=root)

Answer 2

You can not load a .png format with tkinter. You rather need to use the PIL library for that:

import PIL

image = PIL.Image.open("bitcoin.png")
BTC_img = PIL.ImageTk.PhotoImage(image)
BTC_img_label = tk.Label(self, image=BTC_img)
BTC_img_label.image = BTC_img
BTC_img_label.grid(row=2, column=0)

EDIT:

Please, create a test.py file and run this EXACT code:

import tkinter as tk
from PIL import Image, ImageTk

root = tk.Tk()    
image = Image.open("bitcoin.png")
photo = ImageTk.PhotoImage(image)
label = tk.Label(root, image=photo)
label.image = photo
label.grid(row=2, column=0)
#Start the program
root.mainloop()

Tell me if you get an error or not.

Answer 3

I had the same problem. The problem was importing matplotlib.pyplot in the same program or in another py file from which you import definitions. Use Canvas for your plots instead

Answer 4

This problem can be solved by adding master=root in Photoimage Constructor

like for eg

pic=Photoimage(master=self.root,file='mypic.png')
Label(self.root,image=pic).pack()