Tkinter quit freezes

Question

I have written a very simple snippet of code just to try tkinter:

import tkinter as tk

root=tk.Tk()
frame = tk.Frame(root).pack()
button = tk.Button(frame,
                   text="next",
                   command=root.quit).pack()
root.mainloop()

The above code causes the window to freeze. Could someone explain to me what is the reason behind this behaviour?

Asked By: FenryrMKIII

||

Source

Answer 1

Seperating the pack() from the initialisation lines will fix your issue.

import tkinter as tk
root=tk.Tk()
frame=tk.Frame(root)
frame.pack()
button = tk.Button(frame,text="next",command=root.quit)
button.pack()
root.mainloop()

Answered By: WhatsThePoint

Answer 2

Too late in the game, but I had this similar problem before. I was using Jupyter Notebook to run the code.

Instead of using command=root.quit, use command=root.destroy. I’m not an expert, but if I understand correctly root.quit attempts to quit the IDE too, whereas root.destroy will only exit the Tkinter window.

Answered By: Anne

Answer 3

I had the same issue.

I am using Python 3.7 and Spyder. The main issue was Spyder, not the code.
I changed to Jupyter Notebook and it worked.

Answered By: code_art

Answer 4

Making .pack() or .grid() a separate line didn’t work for me. The solution was to hide the window using root.withdraw() before running root.quit() or root.destroy() as shown below.

import tkinter as tk

def quit_(root):
    root.withdraw()
    root.quit()

root = tk.Tk() 
tk.Button(root, text="Quit", command=lambda: quit_(root)).pack()
root.mainloop()

Answered By: Larry Meyn

Tkinter quit freezes

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