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 if guess_row==ship_row and guess_col==ship_col: print "Congratulations! You sank my battleship" else: print "You missed my battleship!" X=[guess_row,guess_col] print print_board(board) INSTRUCTIONS: Add an else under the if we wrote in the previous step. Print out "You missed my battleship!" Set the list element at guess_row, guess_col to "X". As the last line in your else statement, call print_board(board) again so you can see the "X". Make sure to enter a col and row that is on the board! PROBLEM: i can´t replace the O that is currently on the guess_row, guess_col index for X
It should be the other way around:
board[guess_row][guess_col] = 'X'
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