# This program displays an empty window. import Tkinter def main():   main_window = Tkinter.Tk()   Tkinter.mainloop() main()

import Tkinter class MyGUI:   def __init__(self):   # Create the main window widget.   self.main_window = Tkinter.Tk()      # Enter the Tkinter main loop.   Tkinter.mainloop() # Create an instance of the MyGUI class. my_gui = MyGUI()

# The program displays a label with text. import Tkinter class MyGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   # Create a Label widget containing the text 'Hello world'   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.   Tkinter.mainloop() # Create an instance of the MyGUI class. my_gui = MyGUI()

import Tkinter class MyGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   self.label1 = Tkinter.Label(self.main_window,text='Hello World!')   self.label2 = Tkinter.Label(self.main_window,text='This is my GUI program.')   self.label1.pack()   self.label2.pack()   Tkinter.mainloop() mygui = MyGUI()

import Tkinter class MyGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   self.label1 = Tkinter.Label(self.main_window,text='Hello World!')   self.label2 = Tkinter.Label(self.main_window,text='This is my GUI program.')   self.label1.pack(side='left')   self.label2.pack(side='left')   Tkinter.mainloop() mygui = MyGUI()

import Tkinter class MyGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   self.top_frame = Tkinter.Frame(self.main_window)   self.bottom_frame = Tkinter.Frame(self.main_window)   self.label1 = Tkinter.Label(self.top_frame,text='Winken')   self.label2 = Tkinter.Label(self.top_frame,text='Blinken')   self.label3 = Tkinter.Label(self.top_frame,text='Nod')      self.label1.pack(side='top')   self.label2.pack(side='top')   self.label3.pack(side='top')      self.label4 = Tkinter.Label(self.bottom_frame,text='Winken')   self.label5 = Tkinter.Label(self.bottom_frame,text='Blinken')   self.label6 = Tkinter.Label(self.bottom_frame,text='Nod')      self.label4.pack(side='left')   self.label5.pack(side='left')   self.label6.pack(side='left')      self.top_frame.pack()   self.bottom_frame.pack()      Tkinter.mainloop() mygui = MyGUI()

# the program demonstrates a Button widget. # when the user clicks the button, an info dialog box is displayed. import Tkinter import tkMessageBox class MyGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   self.my_button = Tkinter.Button(self.main_window, text='Click me!',command=self.do_something)   self.my_button.pack()   Tkinter.mainloop()   def do_something(self):   tkMessageBox.showinfo('Response','Thanks for clicking the button.') mygui = MyGUI()

import Tkinter import tkMessageBox class MyGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   self.my_button = Tkinter.Button(self.main_window, text='Click me!',command=self.do_something)   self.quit_button = Tkinter.Button(self.main_window,text='Quit',command=self.main_window.quit)   self.my_button.pack()   self.quit_button.pack()   Tkinter.mainloop()   def do_something(self):   tkMessageBox.showinfo('Response','Thanks for clicking the button.') mygui = MyGUI()

import Tkinter import tkMessageBox class KiloGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   self.top_frame = Tkinter.Frame(self.main_window)   self.bottom_frame = Tkinter.Frame(self.main_window)   self.label = Tkinter.Label(self.top_frame,text='Enter a distance in kilometers:')   self.entry = Tkinter.Entry(self.top_frame,width=10)   self.button1 = Tkinter.Button(self.bottom_frame,text='Convert',command=self.convert)   self.button2 = Tkinter.Button(self.bottom_frame,text='Quit',command=self.main_window.quit)      self.label.pack(side='left')   self.entry.pack(side='left')   self.button1.pack(side='left')   self.button2.pack(side='left')   self.top_frame.pack()   self.bottom_frame.pack()      Tkinter.mainloop()   def convert(self):   kilo = float(self.entry.get())   miles = kilo*0.6214   tkMessageBox.showinfo('Result',str(kilo)+' kilometers is equal to '+str(miles)+' miles.')    mygui = KiloGUI()

import Tkinter import tkMessageBox class KiloGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   self.top_frame = Tkinter.Frame(self.main_window)   self.mid_frame = Tkinter.Frame(self.main_window)   self.bottom_frame = Tkinter.Frame(self.main_window)      self.label1 = Tkinter.Label(self.top_frame,text='Enter a distance in kilometers:')   self.entry = Tkinter.Entry(self.top_frame,width=10)      self.button1 = Tkinter.Button(self.bottom_frame,text='Convert',command=self.convert)   self.button2 = Tkinter.Button(self.bottom_frame,text='Quit',command=self.main_window.quit)      self.label2 = Tkinter.Label(self.mid_frame,text='Converted to miles:')   self.value = Tkinter.StringVar()   self.label3 = Tkinter.Label(self.mid_frame,textvariable=self.value)      self.label1.pack(side='left')   self.entry.pack(side='left')      self.button1.pack(side='left')   self.button2.pack(side='left')      self.label2.pack(side='left')   self.label3.pack(side='left')      self.top_frame.pack()   self.mid_frame.pack()   self.bottom_frame.pack()      Tkinter.mainloop()   def convert(self):   kilo = float(self.entry.get())   miles = kilo*0.6214   self.value.set(miles)    mygui = KiloGUI()

import Tkinter import tkMessageBox class MyGUI:   def __init__(self):   self.main_window = Tkinter.Tk()   self.top_frame = Tkinter.Frame(self.main_window)   self.bottom_frame = Tkinter.Frame(self.main_window)      self.radio_var = Tkinter.IntVar()   self.radio_var.set(1)   self.rb1 = Tkinter.Radiobutton(self.top_frame,text='Option 1',variable=self.radio_var,value=1)   self.rb2 = Tkinter.Radiobutton(self.top_frame,text='Option 2',variable=self.radio_var,value=2)   self.rb3 = Tkinter.Radiobutton(self.top_frame,text='Option 3',variable=self.radio_var,value=3)      self.rb1.pack()   self.rb2.pack()   self.rb3.pack()      self.ok_button = Tkinter.Button(self.bottom_frame,text='OK',command=self.show_choice)   self.quit_button = Tkinter.Button(self.bottom_frame,text='QUIT',command=self.main_window.quit)      self.ok_button.pack(side='left')   self.quit_button.pack(side='left')      self.top_frame.pack()   self.bottom_frame.pack()      Tkinter.mainloop()      def show_choice(self):   tkMessageBox.showinfo('Selection','You selected optioin '+str(self.radio_var.get())) mygui = MyGUI()