How to access a button's parent in Tkinter without writing class?

Question

Is there any way to find a widget's parent (specifically button) without saving the parent in an object attribute?

but = Button(main_window, text = "close window!")
but.bind("<Button-1>", btn_handler)

def btn_handler(e):
    e.parent().destroy() # I need something like this!
    # e.parent() ==>> main_window
    # without writing class and defining self.parent ...

I am searching internet for several hours and I didn't find proper answer.

Answer 1

You can use but.master to access the parent of the but object.

To get the container widget of a widget that's handling a callback, you can do:

def callback(evt):
    handling_widget = evt.widget
    parent_of_handling_widget = handling_widget.master
    # or evt.widget.master
    parent_of_handling_widget.destroy()

That said, I'm not exactly sure why you're trying to avoid using a custom class. It's a natural solution to your problem.

import tkinter
from tkinter import ttk

class MyButton(ttk.Button):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.configure(command=self.callback)

    def callback(self):
        self.master.destroy()

tk = tkinter.Tk()
b = MyButton(tk, text="close window!")
b.pack()  # or whatever geometry manager you're using

# we're done!