from Gui import *

size = 3
player = 'X'
def move(row, col):
    global player, buttonText
    if buttonText[row][col].get() == "":
        buttonText[row][col].set(player)
        if player == 'X':
            player = 'O'
        else:
            player = 'X'

g = Gui()
g.title('Tic-Tac-Toe')
g.gr(size, cweights=[1]*size, rweights=[1]*size)
buttonText = [None]*size
for i in range(size):
    buttonText[i] = [None]*size
    for j in range(size):
        buttonText[i][j] = StringVar()
        g.bu(textvariable=buttonText[i][j],
             width=5,
             height=3,
             command=Callable(move, i, j))
g.endgr()
g.mainloop()