btn1 = Button(root,               
             text=1,width=15, height=7,       
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN,command=button_clicked).grid(row=0,column=0)

# -*- coding: utf-8 -*-
from Tkinter import *
root = Tk()
root.minsize(width=500,height=500)
root.maxsize(width=500,height=500)
#canv = Canvas(root,width=500,height=500,bg="#92AFE2",
 #         cursor="pencil")
 
 
# command= """Функция или метод при нажатии кнопки"""
#textvariable=
#Связывает Tkinter переменной (обычно StringVar) к кнопке. Если переменная изменяется, кнопка текст обновляется. (textVariable/переменная)
 
 
#state=The button state: NORMAL, ACTIVE or DISABLED. Default is NORMAL. (state/State)
 
def button_clicked():
    btn1['text']=5  #проверка,но не работает,если просто print 1 то сработает
   
 
 
 
btn1 = Button(root,               
             text=1,width=15, height=7,       
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN,command=button_clicked).grid(row=0,column=0)
#btn.grid(row=0. column=1. sticky=W)
 
btn2 = Button(root,               
             text=2,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=0,column=1)
btn3 = Button(root,               
             text=3,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=0,column=2)
btn4 = Button(root,               
             text=4,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=0,column=3)
 
 
 
btn5 = Button(root,               
             text=5,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=1,column=0)
btn6 = Button(root,               
             text=6,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=1,column=1)
btn7 = Button(root,               
             text=7,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=1,column=2)
btn8 = Button(root,               
             text=8,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=1,column=3)
 
btn9 = Button(root,               
             text=9,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=2,column=0)
btn10 = Button(root,               
             text=10,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=2,column=1)
btn11 = Button(root,               
             text=11,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=2,column=2)
btn12 = Button(root,               
             text=12,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=2,column=3)
 
btn13 = Button(root,               
             text=13,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=3,column=0)
btn14 = Button(root,               
             text=14,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=3,column=1)
btn15 = Button(root,               
             text=15,       
             width=15,height=7,     
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN).grid(row=3,column=2)
btn16 = Button(root,               
             text="",       
             width=15,height=7,     
             bg="#FFAAA5",fg="blue",activebackground="#FFAAA5",borderwidth=3,highlightbackground="#FFAAA5",relief=SUNKEN,state=DISABLED).grid(row=3,column=3)
 
arr_but=[btn1,btn2,btn3,btn4,btn5,btn6,btn7,btn8,btn9,btn10,btn11,btn12,btn13,btn14,btn15,btn16]
 
 
 
 
 
 
 
 
 
 
 
#btn.bind("<Button-1>", Hello) 
#btn.pack() 
#canv.pack()
#btn.pack()
#btn1.pack()  #(side='left')
root.mainloop()

def button_clicked():
	btn1.config(text=2)
btn1 = Button(root,               
             text=1,width=15, height=7,       
             bg="red",fg="blue",activebackground="#2C28FF",borderwidth=3,highlightbackground="#6EFFE7",relief=SUNKEN,command=lambda: (button_clicked())).grid(row=0,column=0)

def button_clicked(event):
	event.config(text=2)

#!/usr/bin/python2.7
# -*- coding:utf-8 -*-
from Tkinter import Tk, Button
root = Tk()
root.minsize(width=500, height=500)
root.maxsize(width=500, height=500)
def button_clicked(btn):
    print (btn)
class MyButton(Button):
    def __init__(self, root, **kwargs):
        kwargs["command"] = lambda: button_clicked(self)
        Button.__init__(self, root, **kwargs)
btn1 = MyButton(root, text=1).grid(row=0, column=0)
root.mainloop()