The code behaves correctly but i don't understand the concept .
what is the logic behind ::
example :: print board
How is it able to multiply the indexes to print ::
only one single "O" from row 3 and column 4.
Instead of two "O"'s for the two indexes.
from random import randint board =  for x in range(0, 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) - 1) ship_row = random_row(board) ship_col = random_col(board) guess_row = int(raw_input("Guess Row:")) guess_col = int(raw_input("Guess Col:")) print ship_row print ship_col # Write your code below! if guess_row == ship_row and guess_col == ship_col: print"Congratulations! You sank my battleship!" else: print"You missed my battleship!" **_`board[guess_row][guess_col]="X"`_** print print_board(board)