python button change text after click

Question

i want to make a Button that changes the displayed text(number) after every click and returns the valure defined in the function, because i want to work with the displayed varia

Answer 1

First

btn = tk.Button(...).grid(..)

assigns None to btn because grid() returns None

use

btn = tk.Button(...)
btn.grid(...)

Now you can change text on button using btn['text'] = "new text" or btn.config(text="new text")

import tkinter as tk

# --- functions ---

def text_change():
    global text

    text += 1

    if text > 4:
        text = 1

    print("changed to:", text)

    #btn['text'] = text
    btn.config(text=text)

def text_print():
    print("current:", text)

# --- main ---

text = 0

root = tk.Tk()

btn = tk.Button(text="1,2,3 or 4", command=text_change, width=10, height=3)
btn.grid(row=1, column=1)

btn2 = tk.Button(text="SHOW", command=text_print, width=10, height=3)
btn2.grid(row=2, column=1)

root.mainloop()