Battleship | Python Fiddle

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_board(board)

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) #This is the row number where the ship is located
ship_col = random_col(board) #This is the column number where the ship is located
#print ship_row
#print ship_col

for turn in range(4):
    print "Turn ", turn + 1
    guess_row = int(raw_input("Guess Row:"))
    guess_col = int(raw_input("Guess Col:"))
    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-1][guess_col-1] == "X"):
            print "You guessed that one already."
        else:
            print "You missed my battleship!"
            board[guess_row-1][guess_col-1] = "X"
        print_board(board)
        if turn == 3:
            print "Game Over. Play again?"

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