My Python Tkinter code isn't running

Hello, so I am trying to make a game in Python where you choose from either 1, 2 or 3 and your guess has to be a different number from the random number which can also be 1, 2 or 3. If you guess right you get a point and can play on, however if you fail, then the game ends and your final score is printed to the console / shell window, whatever you want to call it. My game will use Tkinter buttons on a Tkinter window as what the player presses to tell the program their choice. This is Python by the way.

Here is the code:

# door chooser upgraded

#setup
from tkinter import *
from random import randint

    #functions
def bAaction(door):
    print(door)
    return door
def bBaction(door):
    print(door)
    return door
def bCaction(door):
    print(door)
    return door





print ('Door Chooser')
havent_opened_wrong_door = True
score = 0
chosen_door_num = 0
while havent_opened_wrong_door:
    evil_door = randint(1, 3)
    print ('Three doors are ahead...')
    print ('An evil monster behind one.')
    print ('Which door do you open?')
    window = Tk()
    buttonA = Button(window, text='1', command = lambda *args: bAaction(1, door_num)).pack
    buttonB = Button(window, text='2', command = lambda *args: bBaction(2, door_num)).pack
    buttonC = Button(window, text='3', command = lambda *args: bCaction(3, door_num)).pack
    if door_num == evil_door:
        print ('BOO!')
        havent_opened_wrong_door = False
    else:
        score = score + 1
        print('No monster.')
        print('Your score is',score)
        print('You enter the next room...')
print('You\'ve been eaten!')
print('Game over! You scored', score)

… and this is the error message that shows up on the console / shell window:

if door_num == evil_door:
NameError: name 'door_num' is not defined

Also, the Tkinter buttons don’t show up, only the Tkinter window. I’m not sure what the issue is, what I wrote in the title of this forum post likely isn’t correct.
I am a very nooby programmer, and I don’t want to buy the Codecademy Pro subscription to learn from there, so instead I use a book that I already had, and the book doesn’t explain a lot of things such as:

a_thing_that_I_don't_know_what_is.a_function()

… and more. So in short, I dunno what I’m doing with this Tkinter stuff or any super special things to do with functions.
I have been searching the world wide web for fixes for ages and none of them have worked, so I resorted to a Codecademy forum as it’ll likely help more as the people answering my query can see my code.

Also, don’t mind the ‘upgraded’ stuff, I have this program in another python file but instead it uses the ‘input()’ function, so I’m just upgrading it to use Tkinter buttons.

Thanks for the help.