A game of tic tac toe

tic-tac-toe.py

grid = [[0, 0, 0],
        [0, 0, 0],
        [0, 0, 0]]

print(grid)
win = False
turns = 0
player = 1

while not win:
    if turns % 2 == 0:
        player = 'X'
        play = input("Player 1, please choose a square (format: 'row,col'): ").strip(" ")

    else:
        player = 'O'
        play = input("Player 2, please choose a square (format: 'row,col'): ").strip(" ")

    coord = [int(i) for i in play.split(',')]

    if grid[coord[0] - 1][coord[1] - 1] == 0:
        grid[coord[0] - 1][coord[1] - 1] = player
    else:
        print("That space is already taken!")
        turns -= 1

    [print(i) for i in grid]

    # check columns for wins
    for i in range(3):
        column = [row[i] for row in grid]
        win = all(elem == column[0] and elem != 0 for elem in column)

        if win:
            print("Player", player, "wins by completing column", i + 1)
            break
    if win: break

    # check rows for ins #
    for j in range(3):
        win = all(elem == grid[j][0] and elem != 0 for elem in grid[j])

        if win:
            print('Player', player, 'wins by completing row', j + 1)
            break
    if win: break

    # check diagonals for win
    diag1 = [row[i] for i, row in zip(range(3), grid)]
    win = all(elem == diag1[0] and elem != 0 for elem in diag1)
    if win:
        print('Player', player, 'wins by completing a diagonal!')
        break

    diag2 = [row[i] for i, row in zip(range(3)[::-1], grid)]
    win = all(elem == diag2[0] and elem != 0 for elem in diag2)
    if win:
        print('Player', player, 'wins by completing a diagonal!')
        break

    turns +=1
    if turns == 9:
        print("The game is a draw")
        break
print('The game is over')