Close a Tk window mid-processing

Hi Phil,

I don’t know if this will meet your needs, but with the update() method and a bind on the window’s close button, I would see something like this:

import tkinter as tk
flag = True

def loop():
    i = 0
    while flag:
        i += 1
        print(f"Loop n° {i}")
        root.update()
        print("Loop off")

def on_exit():
    global flag
    flag = False
    root.destroy()

root = tk.Tk()
but_search = tk.Button(root, text="Search", command=loop)
but_search.pack()
but_quit = tk.Button(root, text="Quit", command=on_exit)
but_quit.pack()
root.protocol('WM_DELETE_WINDOW', on_exit)
root.mainloop()

hello,

this gives an error message when you close the window?

import tkinter root = tkinter.Tk() label = tkinter.Label(root, text="I love Python!") label.pack() root.mainloop() print("done")

Hello.

Indeed, tkinter or any GUI won’t close if we don’t give it back control.

So, the solution isn’t in tkinter but in your search method, which seems blocking to me. How roughly is it carried out?

Couldn't you put that into a thread?

In a very high-level summary, something like:

import tkinter import threading class Search(threading.Thread): def __init__(self, text): super().__init__() self._text = text self._stopped = threading.Event() def run(self): # simulation of something that takes time import time while not self._stopped.is_set(): self._text.insert(tkinter.END, f'{round(time.time())}\\n') time.sleep(2) def stop(self): self._stopped.set() def wait_done(ms, window, search): if search.is_alive(): print('waiting...') window.after(ms, wait_done, ms, window, search) else: window.destroy() def on_close(window, search): search.stop() wait_done(100, window, search) def search_run(search, text, button): button.destroy() search.start() window = tkinter.Tk() text = tkinter.Text(window) text.grid() search = Search(text) button = tkinter.Button(window, text='search') button.grid() button.configure(command=lambda: search_run(search, text, button)) window.protocol('WM_DELETE_WINDOW', lambda: on_close(window, search)) window.mainloop()

?

Thanks to everyone,

Diablo codes and yg_be work

How is my search method performed?

It is a double loop to compare 2 lists element by element,

the number of combinations can be very large

The code:

# -*- coding:Utf-8 -*- # 19/04/2024 13:25:08 import itertools as it from tkinter import * def show_result(evt): words_list = [] t1.delete(0.0, END) # Builds anagrams list anag_list = set("".join(e) for e in it.permutations(e1.get(), len(e1.get()))) main_win.update() # Search for el in anag_list: for word in dico: if(el == word): words_list.append(word) if(words_list != []): for el in words_list: t1.insert(END, el+'\n') else: t1.insert(END, 'Rien') def on_exit(): main_win.destroy() WIDTH, HEIGHT = 320, 200 # Makes a list from the dictionnary file dico = [] with open('dico.txt', 'r') as f: for line in f: dico.append(line[:-1]) main_win = Tk() main_win.title('Décoder une anagramme') main_win.geometry(str(WIDTH)+'x'+str(HEIGHT)+'+400+100') main_win.protocol('WM_DELETE_WINDOW', on_exit) l1 = Label(main_win, text='Anagramme :') l1.place(x = 10,y = 20) e1 = Entry(main_win, width = 10) e1.place(x = 100,y = 20) e1.bind("<Return>", show_result) e1.focus() t1 = Text(main_win, width = 30, height = 7) t1.place(x = 10, y = 50) main_win.mainloop()

dico.txt contains 125623 words

a 6-letter word has 720 anagrams

Hello yg_be,

That's right: I ran the test before reading your reply, but after reading

the one from 11:52

it works fine

Thanks again to everyone, problem solved!

I think we can also optimize the code by creating a dictionary from the word list with the key being the length and by building ana_set progressively during iteration to control the duplicates:

import itertools as it from tkinter import * def show_result(evt): t1.delete(0.0, END) it_perm = it.permutations(e1.get()) anag_set = set() for perm in it_perm: word = "".join(perm) if not len(word) in dico.keys(): break if word in dico[len(word)] and word not in anag_set: t1.insert(END, word+"\n") anag_set.add(word) if not anag_set: t1.insert(END, 'Rien') def on_exit(): main_win.destroy() WIDTH, HEIGHT = 320, 200 dico = {} with open('dico.txt', 'r') as f: for line in f: line = line.strip() longueur_mot = len(line) if longueur_mot not in dico: dico[longueur_mot] = [line] else: dico[longueur_mot].append(line) main_win = Tk() main_win.title('Décoder une anagramme') main_win.geometry(f"{WIDTH}x{HEIGHT}+400+100") main_win.protocol('WM_DELETE_WINDOW', on_exit) l1 = Label(main_win, text='Anagramme :') l1.place(x=10, y=20) e1 = Entry(main_win, width=10) e1.place(x=100, y=20) e1.bind("<return>", show_result) e1.focus() t1 = Text(main_win, width=30, height=7) t1.place(x=10, y=50) main_win.mainloop() </return>

I think it could still be optimized

I ended up doing this, and it works pretty well:

# -*- coding:Utf-8 -*- # 19/04/2024 13:25:08 import itertools as it from time import perf_counter from tkinter import * def time_format(_time): units = 's' if(_time > 60.0): _time, units = _time/60.0, 'mn' return(_time,units) def show_result(evt): # Makes a list from the dictionnary file dico = [] with open('dico.txt', 'r') as f: for line in f: if(len(line[:-1]) == len(e1.get())): dico.append(line[:-1]) words_list = [] t1.delete(0.0, END) l3['text'] = 'Temps passé : ' # Builds anagrams list avoiding doubles anag_list = set("".join(e) for e in it.permutations(e1.get(), len(e1.get()))) estimated_t, units = time_format((len(anag_list) * len(dico))/LOOPS_PER_SECOND) l2['text'] = 'Temps estimé : {:.2f} {}'.format(estimated_t, units) # Search t1.configure(cursor = 'wait') start = perf_counter() for el in anag_list: main_win.update() if(el in dico): t1.insert(END, el+'\n') end = perf_counter() t1.configure(cursor = '') elapsed_t, units = time_format(end-start) l3['text'] = f'Temps passé: {elapsed_t: 0.2f} {units} ' def on_exit(): main_win.destroy() LOOPS_PER_SECOND = 16056487 VOWELS = 'aeiouy' WIDTH, HEIGHT = 320, 200 main_win = Tk() main_win.title('Décoder une anagramme') main_win.geometry(str(WIDTH)+'x'+str(HEIGHT)+'+400+100') main_win.protocol('WM_DELETE_WINDOW', on_exit) l1 = Label(main_win, text='Anagramme :') l1.place(x = 10,y = 20) e1 = Entry(main_win, width = 10) e1.place(x = 100,y = 20) e1.bind("<Return>", show_result) e1.focus() l2 = Label(main_win, text='Temps estimé :') l2.place(x = 170,y = 20) t1 = Text(main_win, width = 30, height = 7) t1.place(x = 10, y = 50) l3 = Label(main_win, text='Temps passé :') l3.place(x = 10,y = 170) main_win.mainloop()