# An object oriented approach to creating GUI's
import Tkinter

class GUI:
   def __init__(self):
      # Create a TK root widget
      self.main_window = Tkinter.Tk()
      
      # Create a Label widget containing the 
      # text 'Hello World!'
      # More options: 
      # http://www.pythonware.com/library/tkinter/introduction/x5258-options.htm
      #
      # Notice that we pass the main_window
      self.label = Tkinter.Label(self.main_window, text="Hello world")
      
      # Call the Label widget's pack method
      self.label.pack()
      
      # Enter the Tkinter main loop, this will cause the window
      # to be rendered to the screen.
      self.main_window.mainloop()

def main():
   window = GUI()

main()