How to close tkinter window without a button and not closing Python completely?

Question

I am aware that there are commands such as .destroy() , .exit() etc. However, when taking these out of the 'command' from the button parameter of what action to take when pressed, they don't work.

My scenario is when a user logins successfully, the Tkinter window including its widgets should close whilst short after a GUI in pygame opens. I just don't want the Tkinter window to be there once I don't need it ever again whilst also not exiting Python. I don't want a button as I want the process to be automatic.

The thing that baffles me is why when taking out this command to be on its own, it does not work:

Button(root, text="Quit", command=root.destroy).pack() #works
root.destroy() #don't works

After successful login in the same function call root.destroy() — Stack
– Stack, Commented Sep 9, 2018 at 16:23

pixelistik · Accepted Answer · 2018-09-09 16:49:24Z

1

Without seeing more of the source code, I guess the problem is based on where you call root.destroy()

If it comes after the blocking tk.mainloop(), it will never be reached. Please read Tkinter understanding mainloop regarding this issue.

A possible solution based on the above:

while True:
    tk.update_idletasks()
    tk.update()
    if login_successful: # or whatever your login check looks like
        root.destroy()

You replace the mainloop with your custom loop, which includes a check for a successful login.

edited Sep 9, 2018 at 16:49

answered Sep 9, 2018 at 16:28

pixelistik

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1 Comment

Denio Over a year ago

Exactly what I was missing. I left the mainloop() which like you said didn't allow me to reach to .destroy() . Thank you smart sir! (quick response too I must say)

Akhil George · Accepted Answer · 2025-09-12 04:20:41Z

0

import tkinter as tk

root = tk.Tk()

root.title("Auto Close")

root.geometry("300x100")

tk.Label(root, text="This window will close in 5 seconds.").pack(pady=20)

# The window closes after 5000 milliseconds (5 seconds)

root.after(5000, lambda: root.destroy())

root

.mainloop()

edited Sep 12 at 4:20

Akhil George

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answered Sep 11 at 5:29

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