#!/usr/bin/env python
# -*- coding: utf-8 -*-

from tkinter import *

def action():
    print("Yes, we can !")

root = Tk()
#w = Label(root, text="Bonjour!")
#w.grid(row=?)

champ = Entry(root)
champ.grid(row=0)

b = Button(root,text="Click here !",command=action)
b.grid(row=1)
root.mainloop()