A simple game of Battleship

Battleship

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_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)
ship_col = random_col(board)


for turn in range (4):
    if turn == 3:
        print ("Game Over")
        break
    guess_row = int(input("Guess Row:"))
    guess_col = int(input("Guess Col:"))    
    if guess_row == ship_row and guess_col == ship_col:
        print ("Congratulations! You sank my battleship!")
        break 
    else:
        if guess_row not in range (5) or guess_col not in range (5):
            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 ("Turn: " + str(turn + 1))
    print_board(board)