Hello, Again

hi there, everyone!
>>> 

If you click the right button, the text “hi there, everyone!” is printed to the console. 

If you click the left button, the program stops.
#===============================================
#In Python 2, it is called Tkinter, while in Python 3
#    Tkinter module:
#      import Tkinter
#                      Or, more often:
#    from Tkinter import *
#    import Tkinter as Tk """
#===============================================
from tkinter import *

class App:

    def __init__(self, master):

        frame = Frame(master)
        frame.pack()

        self.button = Button(
            frame, text="QUIT", fg="red", command=frame.quit
            )
        self.button.pack(side=LEFT)

        self.hi_there = Button(frame, text="Hello", command=self.say_hi)
        self.hi_there.pack(side=LEFT)

    def say_hi(self):
        print ("hi there, everyone!")

root = Tk()

app = App(root)

root.mainloop()

root.destroy() # optional; see description below