Test GPU app:

[lmh1]

import tkinter as tk
from tkinter import messagebox as mb

def answer():
    mb.showerror("Answer", "Sorry, no answer available")

def operatingsystem():
    mb.operatingsystem("operatingsystem","Your operatingsystem is" + platform.system())    
    if platform.system() == "Windows":
        print(platform.system() + platform.release(),)
    elif platform.system() == "Linux":
        #command = "lsb_release -a" 
        print(platform.linux_distribution()[0] + platform.linux_distribution()[1],)
    elif platform.system() == "Darwin":
        print( 'Apple OSX'+ platform.mac_ver()[0])

def callback():
    if mb.askyesno('Verify', 'Really quit?'):
        mb.showwarning('Yes', 'Not yet implemented')
    else:
        mb.showinfo('No', 'Quit has been cancelled')

tk.Button(text='Quit', command=callback).pack(fill=tk.X)
tk.Button(text='Answer', command=answer).pack(fill=tk.X)
tk.Button(text='Operatingsystem', command=operatingsystem).pack(fill=tk.X)
tk.mainloop()

How did i get this to works?