How to assign a function to a tkinter button?

Question

I want to assign a print function in tkinter Button , but something goes wrong.

What should I improve?

from tkinter import *
import random

text = random.randint(1, 5)
root = Tk()
root.geometry('550x350')
btn = Button(root, text = 'random', bd = '5'
             command = lambda: btn(print(text))

btn.pack(side = 'top')
root.mainloop()

Answer 1

Small error there, btn is not defined within the lambda function, you can simply print(text) there.

btn = Button(root, text = 'random', bd = '5', command = lambda: print(text))

if you want to have a random number on every click you can do the following

btn = Button(root, text = 'random', bd = '5', command = lambda: print(random.randint(1, 5)))