from Tkinter import *
 
class Evenement(Frame):
    """ Evénement sur la touche 'Shift'"""
    def __init__(self, parent=None):
        Frame.__init__( self )
        self.master.title("Touche - clavier")
        self.master.geometry("350x100")
        self.pack(expand=YES, fill=BOTH)
        self.message=StringVar()
        lbl=Label(self, textvariable=self.message)
        self.message.set("Vousn'avez pas encore appuyé sur Shift")
        lbl["bg"]="blue"
        lbl.config(fg='RED')
        lbl["font"]=('courier', 12, 'bold')
        lbl.pack(expand=YES, fill=BOTH)
        # Liaison de l'événement
        lbl.master.bind( "<KeyPress-Shift_L>", self.shiftPressed )
        lbl.master.bind( "<KeyRelease-Shift_L>", self.shiftReleased )
        lbl.focus()
 
    def shiftPressed( self, event ):
      self.message.set( "Vous avez appuyé sur Shift" +event.keysym)
 
    def shiftReleased( self, event ):
      self.message.set( "Vous avez relâché Shift" )
 
def main():             #Fonction principale
   Evenement().mainloop()
 
if __name__=="__main__":
    main()