name : 00-HELLO-WORLD.py from Tkinter import * # note that there is no explicit call to start Tk. # Tkinter is smart enough to start the system if it's not already going. class Test(Frame): def printit(self): print "hi" def createWidgets(self): self.QUIT = Button(self, text='QUIT', foreground='red', command=self.quit) self.QUIT.pack(side=LEFT, fill=BOTH) # a hello button self.hi_there = Button(self, text='Hello', command=self.printit) self.hi_there.pack(side=LEFT) def __init__(self, master=None): Frame.__init__(self, master) Pack.config(self) self.createWidgets() test = Test() test.mainloop()