Tkinter Module refresh window - button

Question

My program is for a hangman game and I can't get the window to refresh once the button is clicked. At least i think that is the problem Here is my code for the window and the function linked to the button, let me know if you need more code:
def game(self, num):
self.game_window = tkinter.Tk()
self.game_window.title('Hangman')
self.game_window.geometry('200x150')
self.f1 = tkinter.Frame(self.game_window)
self.f2 = tkinter.Frame(self.game_window)
self.f3 = tkinter.Frame(self.game_window)
self.f4 = tkinter.Frame(self.game_window)
self.f5 = tkinter.Frame(self.game_window)
self.f6 = tkinter.Frame(self.game_window)
self.f7 = tkinter.Frame(self.game_window)
self.f8 = tkinter.Frame(self.game_window)
self.f9 = tkinter.Frame(self.game_window)
self.num = num
word_list = ['PYTHON','SOMETHING','COMPLETELY','DIFFERENT',
'LIST','STRING','SYNTAX','OBJECT','ERROR',
'EXCEPTION','OBJECT','CLASS','PERFORMANCE','VISUAL',
'JAVASCRIPT','JAVA','PROGRAMMING','TUPLE','ASSIGN',
'FUNCTION','OPERATOR','OPERANDS','PRECEDENCE',
'LOOPS','SENTENCE','TABLE','NUMBERS','DICTIONARY',
'GAME','SOFTWARE','NETWORK','SOCIAL','EDUCATION',
'MONITOR','COMPUTER']
shuffle = random.shuffle(word_list)
rand = random.choice(word_list)
self.word = rand.lower()
self.current = len(self.word)*'*'
self.letters = []
#self.start_lives = tkinter.Label(self.f1, text = 'You\'ve started the '
#'game with %s lives.\n'%(self.num))
#self.start_lives.pack(side = 'left')
self.lives_rem = tkinter.Label(self.f2,
text = 'Lives remaining: '+str(self.lives_left()))
self.lives_rem.pack(side = 'left')
self.guess_letter = tkinter.Label(self.f3, text = 'Guess a letter: ')
self.guess_entry = tkinter.Entry(self.f3, width = 10)
self.guess_letter.pack(side = 'left')
self.guess_entry.pack(side = 'left')
#self.f1.pack()
self.f2.pack()
self.f3.pack()
self.guess_button = tkinter.Button(self.f6,
text = 'Guess!',
command = self.update(self.guess_entry.get()))
self.guess_button.pack(side = 'left')
self.quit_game = tkinter.Button(self.f6,
text = 'Quit Game',
command = self.game_window.destroy)
self.quit_game.pack(side = 'left')
self.f6.pack()
def update(self, letter):
if letter in self.word and letter not in self.letters:
pos = self.word.index(letter)
self.current1 = list(self.current)
self.current1[pos] = letter.upper()
self.current2 = ''.join(self.current1)
self.letters.append(letter)
elif letter in self.letters:
self.already_guessed = tkinter.messagebox.showinfo('Error!',
'This letter has already '
'been guessed')
#letter is not in the word
elif letter not in self.word:
self.sorry = tkinter.Label(self.f5,
text = 'Sorry, guess again!')
self.sorry.pack(side = 'left')
self.letters.append(letter)
self.num -= 1
self.incorrect_word = tkinter.Label(self.f4,
text = 'Word: '+self.current)
self.incorrect_word.pack(side='left')
self.f5.pack()
self.f4.pack()
return self.current
These are two methods in a Hangman class.

Answer 1

The line that defines the guess button:
self.guess_button = tkinter.Button(self.f6, text = 'Guess!', command = self.update(self.guess_entry.get()))
requires modification. the command argument for the Button class should be a function, but this line is calling that function (which sends the output of the function as the value for the command argument). As you may see on the quit_game button definition, the self.game_window.destroy function is provided as the command, but is not called right now.
I suggest changing this line like this:
self.guess_button = tkinter.Button(self.f6, text = 'Guess!', command = self._on_guess_button_click)
and then add a new method to your class like this:
def _on_guess_button_click (self):
self.update(self.guess_entry.get())