__author__ = 'dsteil'
import Tkinter
import Tkinter.messagebox
from Tkinter import *

class GUIGridExample:
    def __init__(self):
        self.__mainWindow = Tkinter.Tk()

        for row in range(0,10):
            for column in range(0,10):
                newButton = Tkinter.Button(self.__mainWindow, text="T")
                newButton.config(command=lambda button=newButton: self.OnButtonClick(button))
                newButton.grid(row=row, column=column)

        self.__mainWindow.mainloop()

    def OnButtonClick(self,button):
        button.config(text='O', bg='blue')

gui_Example = GUIGridExample()