PySimpleGUIでランダムなパスワードを生成

import PySimpleGUI as sg
import string
import secrets

def pass_gen(size):
   chars = string.ascii_uppercase + string.ascii_lowercase + string.digits
   return ''.join(secrets.choice(chars) for x in range(size))

sg.theme('Dark Blue 3')

layout = [
    [sg.Text('length', size=(8, 1)), sg.InputText('8')],
    [sg.Text('pass', size=(8, 1)), sg.InputText(key="output")],
    [sg.Submit(button_text='submit')]
]

window = sg.Window('PASS GEN', layout,size=(240, 100))

while True:
    event, values = window.read()

    if event is None:
        print('exit')
        break

    if event == 'submit':
        pass_length = int(values[0])
        pass1 = pass_gen(pass_length)
        window["output"].update(pass1)

window.close()

import string
import secrets

def pass_gen(size=12):
   chars = string.ascii_uppercase + string.ascii_lowercase + string.digits
   return ''.join(secrets.choice(chars) for x in range(size))

print(pass_gen(10))

for num in range(5):
    print(num)