tkinter how to create a buton code example

Example 1: how to find the text inside button in tkinter

my_text = my_button.cget('text')

Example 2: button tkinter

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()