python3.0 tkinter button

import tkinter as tk
from tkinter import ttk
win=tk.Tk()
win.title('GUI004')
aLabel=ttk.Label(win,text='A Label')
aLabel.grid(column=0,row=0)

def clickme():
    action.configure(text='*I have been clicked!')
    aLabel.configure(foreground='red')

action=ttk.Button(win,text='Click Me',command=clickme)
action.grid(column=1,row=0)

win.mainloop()