how to create a button python

import tkinter as tk
    

def write_slogan():
    print("Tkinter is easy to use!")

root = tk.Tk()
frame = tk.Frame(root)
frame.pack()

button = tk.Button(frame, 
                   text="QUIT", 
                   fg="red",
                   command=quit)
button.pack(side=tk.LEFT)
slogan = tk.Button(frame,
                   text="Hello",
                   command=write_slogan)
slogan.pack(side=tk.LEFT)

root.mainloop()

import Tkinter
import tkMessageBox

top = Tkinter.Tk()

def helloCallBack():
   tkMessageBox.showinfo( "Hello Python", "Hello World")

B = Tkinter.Button(top, text ="Hello", command = helloCallBack)

B.pack()
top.mainloop()

from tkinter import *


master = Tk()

#program you want the button to execute
def closewindow():
    exit()

#set up button
button = Button(master, text="close window", command=closewindow)

button.pack()

mainloop()