Battleship python code

from random import randint

board = []

for x in range(5):
    board.append(["O"] * 5)

def print_board(board):
    for row in board:
        print " ".join(row)

print "Let's play Battleship!"
print
print "Choose a row and a column which are numbers from 1 to 5. '1, 1' is the top left and '5, 5' is the bottom right. An 'X' will appear in the coordinates you have already chosen. You have five chances"
print
print_board(board)
print
print "Scroll up for information"
def random_row(board):
    return randint(0, len(board) - 1)

def random_col(board):
    return randint(0, len(board[0]) - 1)

ship_row = random_row(board)
ship_col = random_col(board)
print

for turn in range(4):
    print "Turn", turn + 1

    guess_row = int(raw_input("Guess Row:")) -1
    guess_col = int(raw_input("Guess Col:")) -1

    if guess_row == ship_row and guess_col == ship_col:
        print "Congratulations! You sunk my battleship!"
        break
    else:
        if (guess_row < 0 or guess_row > 4) or (guess_col < 0 or guess_col > 4):
            print "Oops, that's not even in the ocean."
        elif(board[guess_row][guess_col] == "X"):
            print "You guessed that one already."
        else:
            print "You missed my battleship!"
            board[guess_row][guess_col] = "X"

        print_board(board)

    if turn == 3:
        print "Game Over"