Creating buttons and changing their text property in python

import tkinter as tk
from tkinter import ttk
win=tk.Tk()
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',text="i m click")
action = ttk.Button(win, text="Click Me!", command=clickMe) # 7
action.grid(column=1, row=0)