status bar tkinter

1class StatusBar(Frame):
2
3    def __init__(self, master):
4        Frame.__init__(self, master)
5        self.label = Label(self, bd=1, relief=SUNKEN, anchor=W)
6        self.label.pack(fill=X)
7
8    def set(self, format, *args):
9        self.label.config(text=format % args)
10        self.label.update_idletasks()
11
12    def clear(self):
13        self.label.config(text="")
14        self.label.update_idletasks()