delete an instance of the object PYTHON

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I'm trying to understand the class notion in Python and having decided to do a little exercice I found myself facing a problem.

What I'm trying to do is to create a circle (on a mouse click) and then I expect the program to delete the circle in 3 seconds.

...I admit it's a useless task, absolutely, but I'm doing this because I encountered a problem whick means that I don't entirely understand the concept of classes and objects.

My code:

from tkinter import *

import time

class Application:

def __init__(self):
    self.fen = Tk()
    self.fen.title('Rom-rom-roooooom')
    self.butt1 = Button(self.fen, text = ' Quit ', command = self.fen.quit)
    self.can1 = Canvas(self.fen, width = 300, height = 300, bg = 'ivory')
    self.can1.grid(row = 1)
    self.butt1.grid(row = 2)
    self.fen.bind("<Button-1>", self.create_obj)
    self.fen.mainloop()
def create_obj(self, event):
    d = self.can1.create_oval(150,150, 170, 170, fill='red', width = 2)
    time.sleep(3)
    d.kill()

appp = Application()

and I get this error: AttributeError: 'int' object has no attribute 'kill'

I expect the variable 'd' to be an instance of the object, but I'm wrong, I guess. What did I do wrong?

Thanks in advance!

asked 47 secs ago

Serge Telnov

3

delete an instance of the object PYTHON