16/19 column error?


#1
    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)
ship_col = random_col(board)
print ship_row
print ship_col

# Everything from here on should go in your for loop!
# Be sure to indent four spaces!
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!"
    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"
            if turn == 3:
                print "Game Over"
# Print (turn + 1) here
print_board(board)

When I type in 4 for the row and 5 for the column the response that pops up is "Oops, that's not even in the ocean". This isn't right is it? Or am I just reading this wrong?
Now that I am thinking about it, there are 5 columns. Shouldn't the if (guess_row < 0 or guess_row > 4) or (guess_col < 0 or guess_col > 4): have the number 5 in it instead of 4?


#2

In coding, by default the values begin at 0, so row 1 = 0 row 5 = 4


#3

Thank you, I forgot that!