# Tk_config_widgets_2_retain_size.py

# Tk_config_widgets_2_retain_size.py

import Tkinter
root = Tkinter.Tk()

msg1 = ['Hide Label','Show Label']
msg2 = ['Back Again!','']

sw = 0
button = Tkinter.Button(root, text=msg1[sw])
button.pack()

label = Tkinter.Label(root, text=">>> Label <<<")

def switch():
        global sw
        sw=(1,0)[sw]
        print sw
        button.config(text=msg1[sw])
        label.config(text=msg2[sw])
        button.pack()
label.pack()

button.config(command=switch)
root.mainloop()