python Исходник Рандомайзер для паролей в окне tkinter

from tkinter import *
import random

def tst():
    txt1.delete('1.0', END)
    txt1.insert(1.0, maincycle())
    txt2.delete('1.0', END)
    txt2.insert(1.0, maincycle())
    txt3.delete('1.0', END)
    txt3.insert(1.0, maincycle())
    txt4.delete('1.0', END)
    txt4.insert(1.0, maincycle())
    txt5.delete('1.0', END)
    txt5.insert(1.0, maincycle())
    txt6.delete('1.0', END)
    txt6.insert(1.0, maincycle())
    txt7.delete('1.0', END)
    txt7.insert(1.0, maincycle())
    txt8.delete('1.0', END)
    txt8.insert(1.0, maincycle())

def maincycle():
    wrd1='abcdefghijklmnopqrstuvwxyz'
    wrd2=wrd1.upper()
    wrd3='1234567890'
    wrd4='!@#$%^&*()_.,<>?'
    prps=''

    if var1.get()==0:
        prps+=wrd1
    if var2.get()==0:
        prps+=wrd2
    if var3.get()==0:
        prps+=wrd3
    if var4.get()==0:
        prps+=wrd4
    ln=list(prps)
    pswd = ''
    if spin.get().isdigit()==True:
        if (var1.get()==1 and var2.get()==1 and var3.get()==1 and var4.get()==1) or int(spin.get())<=0 or int(spin.get())>=31:
            return('              -              ')
        else:
            random.shuffle(ln)   
            pswd = ''.join(random.choice(ln) for i in range(int(spin.get())))
    else:
        return('              -              ')
    pswd = ((30-int(spin.get()))//2)*' '+pswd
    return(pswd)
    

window = Tk()

window.title("To Pswd")
window.resizable(width = False, height = False)
window.geometry('435x208')
window['bg'] = '#193019'

var1 = IntVar()
bt1 = Checkbutton(window, text='Нижний регистр ', variable=var1, onvalue=0, offvalue=1, bg='#A1ABB4')
bt1.place(x=0, y=0, width=120, height=25)

var2 = IntVar()
bt2 = Checkbutton(window, text='Верхний регистр', variable=var2, onvalue=0, offvalue=1, bg='#A1ABB4')
bt2.place(x=0, y=26, width=120, height=25)

var3 = IntVar()
bt3 = Checkbutton(window, text='Цифры                  ', variable=var3, onvalue=0, offvalue=1, bg='#A1ABB4')
bt3.place(x=0, y=52, width=120, height=25)

var4 = IntVar()
bt4 = Checkbutton(window, text='Спец. символы   ', variable=var4, onvalue=0, offvalue=1, bg='#A1ABB4')
bt4.place(x=0, y=78, width=120, height=25)

label = Label(window, text='Длина от 1 до 30  ▼', bg='#A1ABB4', fg='black')
label.place(x=0, y=104, width=120, height=25)
g = StringVar(window)
g.set('12')
spin = Spinbox(window, from_=1, to=30, textvariable=g, bg='#A1ABB4') 
spin.place(x=0, y=130, width=120, height=25)

bt5 = Button(window, text="Создать", command=tst)
bt5.place(x=0, y=156, width=120, height=51)

txt1 = Text(window)
txt1.place(x=155, y=0, width=245, height=25)
txt2 = Text(window)
txt2.place(x=155, y=26, width=245, height=25)
txt3 = Text(window)
txt3.place(x=155, y=52, width=245, height=25)
txt4 = Text(window)
txt4.place(x=155, y=78, width=245, height=25)
txt5 = Text(window)
txt5.place(x=155, y=104, width=245, height=25)
txt6 = Text(window)
txt6.place(x=155, y=130, width=245, height=25)
txt7 = Text(window)
txt7.place(x=155, y=156, width=245, height=25)
txt8 = Text(window)
txt8.place(x=155, y=182, width=245, height=25)

window.mainloop()