tic tac toe game in python

tic-tac.py

import random
import time

print('welcome to the tic-tac-toe game'.upper())
print('\n\n\n')

game_list = [[0, 0, 0], [0, 0, 0], [0, 0, 0]]
player_chars = ['1', '2']
over = False
turn = 'P1'
positions = [0, 1, 2]


def over():
    for char in player_chars:
        for alist in game_list:
            if alist.count(char) == 3:
                return True

        if (game_list[0][0] == game_list[1][1] == game_list[2][2] == char) or (game_list[2][0] == game_list[1][1] == game_list[0][2] == char):
            return True

    for i in range(3):
        test_list = list()
        for alist in game_list:
            test_list.append(alist[i])
        for char in player_chars:
            if test_list.count(char) == 3:
                return True
    return False


def draw():
    for lis in game_list:
        if 0 in lis:
            return False
            break
    return True


def check_position(x, y):
    x = int(x)
    y = int(y)
    if (x not in positions or y not in positions):
        print('improper index')
        return False
    elif game_list[x][y] != 0:
        print('position already taken')
        return False
    else:
        return True


def display_chars(x):
    if x == '1':
        return 'X'
    elif x == '2':
        return 'O'
    else:
        return ' '


def print_game():
    count = 1
    print(' '*7 + 'columns -->  1      2      3')
    print(' '*10 + 'rows')
    print(' '*12 + '|' )
    print(' '*12 + 'v' + '    ' + '-'*22, end = '')
    for lis in game_list:
        print("""
                 |      |      |      |
            {}    |  {}   |  {}   |  {}   |
                 |      |      |      |
                 ----------------------""".format(count, display_chars(lis[0]), display_chars(lis[1]), display_chars(lis[2])), end='')
        count += 1

    # for l1 in game_list:
    #     for l2 in l1:
    #         print(str(l2) + ' ', end='')
    #     print('\n')


print('GAME')

while True:
    print_game()

    if over():
        print('\n\n\n'+' '*17+'='*8+turn+'  wins'+'='*8)
        break

    if draw():
        print('\n\n\n' + ' '*17 + '='*10 + 'Draw' + '='*10)
        break

    if turn == 'P1':
        turn = 'P2'
    else:
        turn = 'P1'

    print("\n\n\t\t\t " + turn + "'s turn")
    x_pos = 0
    y_pos = 0

    while turn == 'P1':
        x_pos = input('Enter the row    : ')
        y_pos = input('Enter the column : ')
        x_pos = int(x_pos) - 1
        y_pos = int(y_pos) - 1
        if check_position(x_pos, y_pos):
            break
        else:
            continue

    while turn == 'P2':
        print('\n\t\tthnking.....Please wait\n\n'.upper())
        time.sleep(1)
        x_pos = random.randrange(0,3)
        y_pos = random.randrange(0, 3)
        if check_position(x_pos, y_pos):
            break
        else:
            continue


    if turn == 'P1':
        val = '1'
    else:
        val = '2'
    game_list[x_pos][y_pos] = val