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from Tkinter import *
from Tkconstants import *
fg, bg = "red", "green"
def simple_label(master):
mylabel = Label(master, text="ciao!", fg="red", font="Courier 36 bold",
bg="green")
mylabel.pack(side=LEFT)
def flashing_label(master):
label = Label(master, text="ciao!",
foreground=fg, background=bg,
font="Courier 36 bold")
label.pack(side=RIGHT)
label.after(1000, flash, label)
def flash(mylabel):
global fg, bg
fg, bg = bg, fg
mylabel.config(foreground=fg, background=bg)
mylabel.after(1000, flash, mylabel)
if __name__ == "__main__":
root = Tk()
simple_label(root)
flashing_label(root)
root.mainloop()
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