Python-сообщество

 #coding: utf-8 
from tkinter import *
from tkinter.simpledialog import *
from tkinter.messagebox import *
import tkinter.ttk as ttk
import os
import pickle
import random
global pin
del_for = False
pin = ""
accounts={}
new_pass = False
def main_window():
    global del_for
    global accounts
    global root
    if del_for == True:
        root.destroy()
        root = Tk()
        root.geometry("430x300")
        root.title("Менеджер паролей")
    menu_bar = Menu(root)
    menu_bar.add_command(label="Генерировать", command=gener)
    root.config(menu = menu_bar)
    root.mainloop()
def gener():
    global var_az
    global az
    global var_spec
    global var_numbs    
    global gen_pass
    global size
    generation = Tk()
    generation.title("Генерация паролей")
    var_az = IntVar()
    var_numbs = IntVar()
    var_spec = IntVar()
    az1 = Checkbutton(generation, text="A-Z",variable=var_az,onvalue=1,offvalue=0)
    numbs = Checkbutton(generation, text="0-9",variable=var_numbs,onvalue=1,offvalue=0)
    spec = Checkbutton(generation, text="Спец.символы",variable=var_spec,onvalue=1,offvalue=0)
    list1 = [i for i in range(5,20)]
    size = ttk.Combobox(generation,values = list1, width=3)
    size.set(10)
    generat = Button(generation, text="Сгенерировать", command = lambda: generation_func())
    gen_pass = Entry(generation) 
    az1.grid(row=0,column=0)
    numbs.grid(row=0,column=1)
    spec.grid(row=0,column=2)
    size.grid(row=1,column=0)
    generat.grid(row=1,column=2)
    gen_pass.grid(row=2,columnspan=2)
    generation.mainloop()
def generation_func():
    global var_az
    global var_spec
    global var_numbs
    global gen_pass
    global size
    print(var_az.get())
root = Tk()
root.title("Менеджер паролей")
root.geometry("430x300")
root.after(100, main_window())
root.mainloop()