exit_menu.py

#!/usr/bin/env python

import sys
import os
from tkinter import *
def mbexit():
    os.system("notify-send 'Logging Out'")
    os.system('sleep 0.5')
    os.system('urxvt')
def mbrestart():
    os.system("notify-send 'Restarting'")
    os.system('sleep 0.5')
    os.system('urxvt')
def mbshutdown():
    os.system("notify-send 'Shutting Down'")
    os.system('sleep 0.5')
    os.system('urxvt')

mIcon = ''
mGui = Tk()
img = PhotoImage(file = r'/home/chris/Pictures/letter-z.gif')

mGui.geometry('450x450+600+200')
mGui.title('ZDM Logout')
mGui.call('wm', 'iconphoto', mGui._w, img)

mbutton = Button(text='Restart', command = mbrestart).pack(fill=X, pady=85, padx=60)
mbutton = Button(text='Shutdown', command = mbshutdown).pack(fill=X, pady=10, padx=60)
mbutton = Button(text='Logout', command = mbexit).pack(fill=X, pady=85, padx=60)
mGui.mainloop()