So I was working on a larger project and testing on a Mac when I noticed some weird behavior. I'm using Python 3.9.1 and macOS 11.0.1 – the bug doesn't occur on Windows 7, and I haven't tested other versions of macOS or Windows.
I'm using Tkinter for an initial setup window and then switching to Pygame, and in between, I do some cleanup of all the Tkinter variables – theoretically they don't matter, since I'm not using Tkinter for anything after that. Once the Pygame window opens, everything is fine, but if I click on another window to defocus Pygame, and then focus on the Pygame window again, it crashes with the following output:
pygame 2.0.0 (SDL 2.0.12, python 3.9.1)
Hello from the pygame community. https://www.pygame.org/contribute.html
called Tcl_FindHashEntry on deleted table
zsh: abort python3 test.py
The minimum to consistently replicate this issue is
import pygame
import tkinter as tk
from time import sleep
root = tk.Tk()
try:
root.mainloop()
except tk.TclError:
pass
del root
pygame.init()
screen = pygame.display.set_mode((100, 100))
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
print('User quit.')
exit()
pygame.display.flip()
sleep(0.025)
If I remove the del root then it doesn't crash, so it's not actually a big issue for my project – I don't need to remove the reference to root. But is there a better solution that can prevent the problem and still allow me to clean up the Tkinter references once I'm done with it?
