FutureLearn GUIzero - TicTacToe

from guizero import App, PushButton

def tl_press():
    if top_left.text == "O":
        top_left.text = "X"
    else:
        top_left.text = "O"

def tm_press():
    if top_mid.text == "O":
        top_mid.text = "X"
    else:
        top_mid.text = "O"

def tr_press():
    if top_right.text == "O":
        top_right.text = "X"
    else:
        top_right.text = "O"

def ml_press():
    if mid_left.text == "O":
        mid_left.text = "X"
    else:
        mid_left.text = "O"

def mm_press():
    if mid_mid.text == "O":
        mid_mid.text = "X"
    else:
        mid_mid.text = "O"

def mr_press():
    if mid_right.text == "O":
        mid_right.text = "X"
    else:
        mid_right.text = "O"

def bl_press():
    if bot_left.text == "O":
        bot_left.text = "X"
    else:
        bot_left.text = "O"

def bm_press():
    if bot_mid.text == "O":
        bot_mid.text = "X"
    else:
        bot_mid.text = "O"

def br_press():
    if bot_right.text == "O":
        bot_right.text = "X"
    else:
        bot_right.text = "O"

app = App(layout="grid", title="TIC-TAC-TOE", width=140, height=132)

top_left = PushButton(app, text="...", grid=[0,0], command=tl_press)
top_mid = PushButton(app, text="...", grid=[1,0], command=tm_press)
top_right = PushButton(app, text="...", grid=[2,0], command=tr_press)

mid_left = PushButton(app, text="...", grid=[0,1], command=ml_press)
mid_mid = PushButton(app, text="...", grid=[1,1], command=mm_press)
mid_right = PushButton(app, text="...", grid=[2,1], command=mr_press)

bot_left = PushButton(app, text="...", grid=[0,2], command=bl_press)
bot_mid = PushButton(app, text="...", grid=[1,2], command=bm_press)
bot_right = PushButton(app, text="...", grid=[2,2], command=br_press)

app.display()