Игра крестики-нолики

from tkinter import *
 
root = Tk()
root.title("Крестики-Нолики")
root.geometry("1320x640")
 
#формирование поля
cell_size = 24 #размер клетки
x_count = 41 #размер поля по оси x
y_count = 25 #размер поля по оси y
 
canvas_width = x_count*cell_size
canvas_height = y_count*cell_size
 
canvas = Canvas(root, width = canvas_width, height = canvas_height, bg = '#fff')
canvas.pack(side='right')
 
game_over = 0
 
 
#линии сетки по вертикали
for y in range(x_count+1):
    k = cell_size * y
    canvas.create_line(k, canvas_height , k, 0, width=1, fill='#191938')
 
#линии сетки по горизонтали
for x in range(y_count+1):
    k = cell_size * x
    canvas.create_line(0, k, canvas_width , k, width=1, fill='#191938')
 
label_game = Label(root, text='Игра 1 на 1 с другом:')
label_game.place(x=0, y=10)
label_game1 = Label(root, text='Игра 1 на 1 с компьютером:')
label_game1.place(x=0, y=40)
label_clean = Label(root, text='Очистка:')
label_clean.place(x=0, y=70)
 
btn_game = Button(root, text='Играть')
btn_game.bind('<Button-1>')
btn_game.place(x=120, y=10)
btn_game1 = Button(root, text='Играть')
btn_game1.bind('<Button-1>')
btn_game1.place(x=160, y=40)
 
btn_clean = Button(root, text='Очистка')
btn_clean.bind('<Button-1>')
btn_clean.place(x=55, y=70)
 
# массив результатов ходов , заполнение листов значением -1
cells = []
for y in range(y_count+1):
    row = []
    for x in range(x_count+1):
        row.append(-1)
    cells.append(row)
 
# функция подсчета значений на линии
def calc_line(y_num, x_num, y_step, x_step):
    val = cells[y_num][x_num]
 
    val_count = 0
    for num in range(5):
        if cells[y_num + num * y_step][x_num + num * x_step] == val:
            val_count += 1
        else:
            break
    for num in range(1, 5):
        if cells[y_num - num * y_step][x_num - num * x_step] == val:
            val_count += 1
        else:
            break
    return val_count
 
 
def calc_result(y_num, x_num):
    global game_over
    val_counts = []
    val_count = calc_line(y_num, x_num, 0, 1)
    val_counts.append(val_count)
    val_count = calc_line(y_num, x_num, 1, 1)
    val_counts.append(val_count)
    val_count = calc_line(y_num, x_num, 1, 0)
    val_counts.append(val_count)
    val_count = calc_line(y_num, x_num, -1, 1)
    val_counts.append(val_count)
    val_count = max(val_counts)
 
    if val_count >= 5:
        game_over = 1
        st = "END OF GAME"
        if cells[y_num][x_num] == 0:
            st = st + "0 - WIN"
        else:
            st = st + "X - WIN"
        canvas.create_text(500, 30, text=st, font=("Arial", 30), tag='game')
        st = "press ENTER for new game"
        canvas.create_text(500, 80, text=st, font=("Arial", 20), tag='game')
 
 
# функция отрисовки нолика
def draw_oval(event):
    global cells
    x_num = event.x // cell_size
    y_num = event.y // cell_size
    if cells[y_num][x_num] == -1 and not game_over:
        cells[y_num][x_num] = 0
        x_left = x_num * cell_size + 3
        y_top = y_num * cell_size + 3
        canvas.create_oval(x_left, y_top, x_left + cell_size - 6, y_top + cell_size - 6, outline="#050", width=3,
                         tag='game')
        calc_result(y_num, x_num)
 
 
# функция отрисовки крестика
def draw_kre(event):
    global cells
    x_num = event.x // cell_size
    y_num = event.y // cell_size
    if cells[y_num][x_num] == -1 and not game_over:
        cells[y_num][x_num] = 1
        x_left = x_num * cell_size + 3
        y_top = y_num * cell_size + 3
        canvas.create_line(x_left, y_top, x_left + cell_size - 6, y_top + cell_size - 6, fill='blue', width=3, tag='game')
        canvas.create_line(x_left + cell_size - 6, y_top, x_left, y_top + cell_size - 6, fill='blue', width=3, tag='game')
        calc_result(y_num, x_num)
 
 
# привязка к событиям мыши
canvas.bind('<Button-1>', draw_oval)
canvas.bind('<Button-3>', draw_kre)
 
 
# включить обработчик клавиатуры,
def key_gamester(event):
    # обработать нажатия клавиш
    global game_over
    global cells
    if event.keysym == "Return" and game_over:  # начать игру заново
        game_over = 0
 
        for y in range(y_count+1):
            for x in range(x_count+1):
                cells[y][x] = -1
 
        canvas.delete("game")
 
canvas.bind("<KeyPress>", key_gamester)
canvas.focus_set()
root.mainloop()

def cleaning(event):
 
    if event.keysym == "z":
 
        for y in range(y_count + 1):
            for x in range(x_count + 1):
                cells[y][x] = -1
        canvas.update()
 
root.bind("<Key>", cleaning)

def clear1():
    global game_over
    global cells
    game_over = 0
        
    for y_num in range(y_count):
        for x_num in range(x_count):
            cells[y_num][x_num] = -1
                
    canvas.delete("game")

btn_clean = Button(root, text='Очистка',command=clear1)
btn_clean.bind('<Button-1>')
btn_clean.place(x=55, y=70)