Closing a Toplevel Tkinter window

Question

I'm trying to teach myself Python so apologies for what may be a stupid question but this has been driving me crazy for a few days. I've looked at other questions on the same subject here but still don't seem to be able to get this to work.

I have created a top level window to ask the user for a prompt and would like the window to close when the user presses the button of their choice. This is where the problem is, I can't get it to close for love or money. My code is included below.

Thank so much for any help.

from Tkinter import *

root = Tk()

board = Frame(root)
board.pack()

square = "Chat"
cost = 2000

class buyPrompt:

         def __init__(self):
            pop = Toplevel()

            pop.title("Purchase Square")

            Msg = Message(pop, text = "Would you like to purchase %s for %d" %                         (square, cost))
            Msg.pack()


            self.yes = Button(pop, text = "Yes", command = self.yesButton)
            self.yes.pack(side = LEFT)
            self.no = Button(pop, text = "No", command = self.noButton)
            self.no.pack(side = RIGHT)

            pop.mainloop()
         def yesButton(self):
                        return True
                        pop.destroy
         def noButton(self):
                        return False

I've tried quite a few different ways of doing pop.destroy but none seem to work, things I've tried are;

pop.destroy()
pop.destroy
pop.exit()
pop.exit

Thank you

Answer 1

The method to call is indeed destroy, on the pop object.

However, inside of the yesButton method, pop refers to something that is unknown.

When initializing your object, in the __init__ method, you should put the pop item as an attribute of self:

self.pop = Toplevel()

Then, inside of your yesButton method, call the destroy method on the self.pop object:

self.pop.destroy()

---

About the difference between pop.destroy and pop.destroy():

In Python, pretty much everything is an object. So a method is an object too.

When you write pop.destroy, you refer to the method object, named destroy, and belonging to the pop object. It's basically the same as writing 1 or "hello": it's not a statement, or if you prefer, not an action.

When you write pop.destroy(), you tell Python to call the pop.destroy object, that is, to execute its __call__ method.

In other words, writing pop.destroy will do nothing (except for printing something like <bound method Toplevel.destroy of...> when run in the interactive interpreter), while pop.destroy() will effectively run the pop.destroy method.