Working in module Tkinter

Question

I have a 3 buttons and 1 function. How to add string from field 'text' of button to argument of function? Example:
from tkinter import *
def my_f(text_button):
my_label.set("{} button".format(text_button))
b1 = Button(root, text="First", command=my_f)
b2 = Button(root, text="Second", command=my_f)
b3 = Button(root, text="Third", command=my_f)
...

Answer 1

I find solution:
b1 = Button(root, text="First", command=lambda i="First": my_f(i))
Thanks