Python Tkinter Window not closing

Question

So I was writing a short code to test something when I noticed this interesting behaviour.

import tkinter
from tkinter import *

master=tkinter.Tk()
master.geometry("800x850+0+0")
master.configure(background="lightblue")

def d():
    master.destroy()

button=Button(master, text="asdf", command=d).pack()

master.mainloop()

The button closes the window as expected, but when I click on the red button on the top left button (from the actual window, not tkinter), the program gets stuck and doesn't respond. However, when I change the code to remove the text in the button as follows:

import tkinter
from tkinter import *

master=tkinter.Tk()
master.geometry("800x850+0+0")
master.configure(background="lightblue")

def d():
    master.destroy()

button=Button(master, command=d).pack()

master.mainloop()

It now works perfectly fine. Both the tkinter button in the window and the red button from the actual window close the window as expected. Why does this happen? I am using python 3.5 on Mac, in case this matters.

Just a hunch, but what happens if you split the lines into: button=Button(master, text="asdf", command=d) and next line: button.pack()? It should work fine though, and so it does on my system (Ubuntu 16.04) — Jacob Vlijm

Julius Möller Julius Möller · Accepted Answer · 2016-09-24T16:05:43

I tried it out on some of my friends computers and they didn't have this issue, so it appears that it was just a hardware specific problem.

Python Tkinter Window not closing

1 Answers