#!/usr/bin/env python

import sys

if sys.version_info >= (3,6):
	from tkinter import *
else:
	from Tkinter import *

class App:
  def __init__(self, master):
    frame = Frame(master)
    frame.pack()
    self.button = Button(frame, 
                         text="QUIT",
                         command=frame.quit)
    self.button.pack(side=LEFT)
    self.slogan = Button(frame,
                         text="Hello",
                         command=self.write_slogan)
    self.slogan.pack(side=LEFT)
  def write_slogan(self):
    print ("Tkinter is easy to use!")

root = Tk()
app = App(root)
root.mainloop()