###import Tix as tkfrom pprint import pprint r= tk.Tk()r.title("test") l=tk.Label(r, name="a_label")l.pack() class MyGrid(tk.Grid):    def __init__(self, *args, **kwargs):        kwargs['editnotify']= self.editnotify        tk.Grid.__init__(self, *args, **kwargs)    def editnotify(self, x, y):        return True g = MyGrid(r, name="a_grid",selectunit="cell")g.pack(fill=tk.BOTH)for x in xrange(5):    for y in xrange(5):        g.set(x,y,text=str((x,y))) c = tk.Button(r, text="Close", command=r.destroy)c.pack() tk.mainloop()